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Pelican Technical Article:

BMW Blower Resistor Replacement

Talent:

*

Applicable Models:

BMW E28 524td Sedan (1985-86)
BMW E28 528e Sedan (1982-88)
BMW E28 533i Sedan (1983-84)
BMW E28 535i/is Sedan (1985-88)
BMW E28 M5 Sedan (1988)
BMW E36 318i Convertible (1992-99)
BMW E36 318i Sedan (1992-99)
BMW E36 318is Coupe (1992-99)
BMW E36 318ti Hatchback (1992-99)
BMW E36 323i Convertible (1998-99)
BMW E36 323is Coupe (1998-99)
BMW E36 325i Convertible (1992-95)
BMW E36 325i Sedan (1992-95)
BMW E36 325is Coupe (1992-95)
BMW E36 328i Convertible (1996-99)
BMW E36 328i Sedan (1996-99)
BMW E36 328is Coupe (1996-99)
BMW E36 M3 Coupe/Conv (1995-99)
BMW E36 M3 Sedan (1995-99)

For anyone that has a blower motor that only works on high speed you may have a faulty resistor pack. The following is how I replaced mine.

Part Numbers:
64-11-8-391-749 - all E36 3-Series
64-11-1-381-784 - all E28 5-Series

The resistor pack is located just to the right of gas pedal of left hand drive vehicles. In order to get to the pack, you must remove the pedal cover.

Two screws hold on the pedal cover. One is located just under the headlight controls; in the photo I had already removed the screw.

The other screw is under the dash to the right of the steering column, again the screw is already moved in the photo.

Once the screws are removed there are two clips holding the cover on. One is on the far left of the dash..

The other is just right of the steering column. Pull to the rear of the car and the cover will remove easily.

Disconnect the plugs on the chime speaker and remove the cover.

Now you can see the pack back of the pack. Unlatch the small clip holding it in housing and pull out.

Remove the electrical connection and you are ready to replace the pack. Notice the rusted area on the bottom coil. This was the reason mine was not working; the rust lost the continuity of the connection.

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Comments and Suggestions:
Pete K Comments: Okay so I tried the capacitor resoldering on the control panel and it didn't work.

I've thought of a plan of attack from here on, first I'm going to try disconnecting the battery for over 30 minutes and charging the battery before reconnect to try to mimic installing a new battery, there was 1 case I've heard of this workingor he may have just installed a new battery but mine is less than 2 years old, car has sat a lot though, I will pray this works, but if it doesn't work I will replace the FSU, and if that doesn't work, I'll just try the local independent or dealer. I'll let you know how I fixed this, I'm very determined to get the AC and Heat working.
September 27, 2014
Pete K Comments: sorry that's 4.5V at 86B connector which is supposed to be not used for the AC compressor circuit? I think the regular 86 connector has no voltage. I'll do some more checking, but the heater valve also does not work, it's not hot to the touch, only the valve to the engine block seems to be working but not the valve to the heater core.

I also read about transport mode, which should have been erased by the dealer when the car was new, but I have heard of a few others say they also went into this mode when their battery died. For some reason I think the low voltage fault got tripped and caused the ecu to behave like this and not allow A/C or Heater function.
September 26, 2014
Pete K Comments: I'm getting 12V at terminal 30 at all times which is normal. And with the key on position I'm getting 4.5V at terminal 86, which I've seen 2 different sources say it should be 12V there, and it seems to be causing the relay to not energize to turn on the compressor.

When I jumped terminal 30 to 87 it turned on the compressor clutch, but it wasn't blowing cold air.

How do you avoid damaging something on battery reconnect? I can only think of a low power keep alive source, but that's still a small risk if I have to work on fuel system or electrical stuff isn't it?
Thanks for your time.
September 26, 2014
Pete K Comments: Oh yea, I forgot to mention that the A/C compressor doesn't turn on anymore after the battery reconnect. I had to force it on, but it used to turn on by itself before.

When I checked the relay terminals, I had 12V-12.5 at the left always hot connection, and in the center key on connection it only showed 4.5V. I read that the center key on connection should be 12V? Do these relays turn on from 12V or 5V from the ecu?

I think it has more to do with reprogramming, because everything was working perfectly fine right before the battery disconnect, I dunno I'm puzzled.
September 25, 2014
  Followup from the Pelican Staff: What terminals are you getting these voltage numbers at? - Nick at Pelican Parts  
Pete K Comments: Hey I ran into a problem after disconnecting my battery for a long period while I worked on the fuel system on my 98 328is. After reconnecting the battery the A/C stopped blowing cold air, and the heater won't blow hot air either, it just blows the same warm air on any setting. The only symptom is a slightly unstable blower fan at the lowest setting that might point to the FSU being faulty. But my car was blowing perfectly cold air that I recharged a month ago and right before I disconnected the battery. I read that on BMW you need some reprogramming after disconnecting the battery to get the A/C back. I checked the relay and even forced the compressor on by shorting the relay terminals, the compressor clutch engaged but nothing was cold. I don't want to throw this part at it if it won't fix it, what do you think?
September 25, 2014
  Followup from the Pelican Staff: I have not had to reprogram the hvac on your model after disconnecting the battery. The IHKA control head may have been damaged during the battery connection. I would check the system for fault codes. - Nick at Pelican Parts  
BMW 318 tds e36 Comments: Hello, I have a BMW 318tds Compact E36 and my blower is not working, probably caused by this resistor. I tried to find the location of the resistor but I haven't found it. May it be in another location in the Compact model?

Thank you
September 15, 2014
  Followup from the Pelican Staff: I am not sure, it should be in the same area. We don;t have your vehicle here in the US, so I can't be sure. - Nick at Pelican Parts  
BMW '93 E36 Comments: Hi, I have a BMW 1993 E36, stearing wheel on the left side. I can't find the blower resistor pack as it does not look anything like in the pictures I see on google. Could it be that '93 BMW have a part that looks different and is located elsewhere?
September 9, 2014
  Followup from the Pelican Staff: Not that I am aware of. I opened a post in our forums. A Pelican community member may be able to answer your question.
- Nick at Pelican Parts
 
jblack340 Comments: Hey Pelican guys,
Picked up a 99 323 ci for next to nothing. However it has an aftermarket stereo that's worked all of about twice played through the speakers, it "works" other than that, just doesn't play through the speakers Of course the whole HVAC system is a wreck. It turns on randomly and makes a clicking sound behind the glove box it sounds. It will either not work at all and stream hot air through the floor vents, blow weak with the HVAC panel being on, or barely blow with the HVAC control panel being half on very very dim Do you think it has something to do with the aftermarket stereo? I have the original HK speakers still, and the stereo itself has been professionally wired. It seems like 2 wires are touching? Is that even a possibility behind the glove box?
August 25, 2014
  Followup from the Pelican Staff: If there was an issue with the wiring, it would be in the center dashboard. I would inspect it if I were you. Other than the wiring, I don't see a connection between the two. - Nick at Pelican Parts  
Gus Comments: 96 e36/m52 328i. this is continued from my previous comment....

I went and swapped around the blower relay with the horn relay and swapped them back....now the blower is working fine and I have nice cool AC here in Vegas.

Would you believe the radio quit working again. Seems like I get a properly configured blower OR a working Radio, not both. Any thoughts....I probably now am in the wrong area for this problem to post/comment on?
August 17, 2014
  Followup from the Pelican Staff: I think it is worth looking at the circuit. Check if there is a poor connection in the fuse panel or burned wires. There could be a voltage drop, causing the radio to go out when the blower is functioning. - Nick at Pelican Parts  
Gus Comments: I have a 96 328i, e36/m52. Driving around yesterday, made a stop and came back out to the car and now have nothing blowing out of the ac vents 105 here in Vegas. Digital control unit seems to working with all buttons lighting up appropriately including the heater...just no air from the vents. Checked the 4 fuses, they appear to be fine.

I was thinking it was the FSU.....

To throw a wrench into it; my stock radio quit working a couple of years ago...yesterday when my ac quit blowing air, i now have a working radio and it saves the security code appropriately....don't know if the radio thing is related but now am thinking I had an excessive current draw all along.

Questions: 1 Should i start with the blower motor relay and swap replace?
2 Should i jump to the FSU and replace it;
3 Is the FSU located on the drivers side near the gas pedal for Left side drive.
August 17, 2014
  Followup from the Pelican Staff: I would check that the final stage is sending the correct signal to the blower. If is not, I would replace the final stage. - Nick at Pelican Parts  
googes Comments: Hey, Have a 97 e36 m3 that was sitting in my garage for about 1 year before I just put it back on the road. My problem is that when the AC is on in any speed it will work fine nice and cold and the blower works but while driving or sitting at a stop the blower will shut off completely with no air coming out at all. Yet my climate control buttons still stay on. Blower stays off for a few minutes then will start blowing cold air again without me doing anything. This continues to happen on any setting and in high or low fan speeds. I know the blower works because it's blowing lol and the ac works fine, could this be a bad resistor pack? Just to note this wasn't happening before I garaged it for so long.. Thanks for any help or info
August 10, 2014
  Followup from the Pelican Staff: Sounds like either the blower motor or the final stage. I would check the signal to the final stage from the a/c control panel when the problem is present. - Nick at Pelican Parts  
T Comments: I have a 93 e36 and the guy i bought it from said the ac didn't work because they disconnected it from somewhere under the dashboard and that i had to remove the dash to connect the ac, can you actually disconnect the ac from under the dash?, when i say disconnect i mean that the ac is completely dead and the only air that comes through is when the car is at a decent speed
July 13, 2014
  Followup from the Pelican Staff: Blower motor or the evaporator. Maybe the control panel? - Nick at Pelican Parts  
Hillsnorway Comments: 1985 735i e23 with strange AC problem.
Got HVAC working properly after replacing most of the vacuum hoses. The system works great most of the time when starting the car cold. However, if I have to turn off the car f. ex. to gas up, or a quick errand, the HVAC controls go dead fan control - no effect & HVAC push button lights off. When this happens, the power windows also stop working, but the sun roof still opens and closes. I've checked all the fuses, and none ever get blown. Usually if I park the car for a few hours when I come back all is working again. I have noticed of late that as the weather gets hotter, this happens more frequently, and seems to also take longer for things to 'reset' e.g. leaving the car parked. Could a relay or resistor malfunction explain this behavior? Is so, where is it located?
June 26, 2014
  Followup from the Pelican Staff: There is no common module between the two, as the windows for example are all wired directly through the switches. The only thing that comes to mind is if the power distribution box id failing when hot. - Nick at Pelican Parts  
jsmk Comments: Hi I have a 320i and the the AC all of a sudden stoped working .Checked the gas it all OK. but the analog control panel, all the the ligths are onCompressor,Recirculation,rear wind shild heaterwhen pressed dose not switch off, even when you turn off the blower speed regulator dial knob-still stays on. please tell me whats the defect....
June 23, 2014
  Followup from the Pelican Staff: SOunds like it could be an issue with the control panel. Could be a short or a stuck switch. - Nick at Pelican Parts  
Mike S Comments: Hi, I have a 1999 BMW M3. I recently replace the final stage because I couldn't hear air or feel air coming out the vents. Now that I have replaced it, I hear air blowing but nothing from the front dash vents. Only air is from the defrost on the side for the side view mirrors. When I turn on my A/C, I feel cold air on those defrost vents. Just nothing is coming out from the main vents. Any ideas?

Also when I turn on my A/C, I hear a very faith high pitch squeal from the engine area. I assume its the compressor gone bad? Thank You
June 20, 2014
  Followup from the Pelican Staff: Sounds like am issue with the mode doors. You will have to see if they are changing position when you request them to. - Nick at Pelican Parts  
Ange Comments: My AC stopped working altogether just today. 3 weeks ago, I noticed the 1 speed would die sometimes while driving so I had to put it to 2 then back to 1 for it to work again. Then about a week ago, the 1 would just constantly not work and I had to leave it at 2. Then yesterday, the 1 and 2 wouldn't work but 3 and 4 would. And today, 1, 2, 3 and 4 wouldn't work anymore. The AC is cold but just no air coming out. Any ideas? Thanks.
June 8, 2014
  Followup from the Pelican Staff: Souds like a blower motor issue. Either the motor, fuse or resistor. - Nick at Pelican Parts  
Mike Comments: Thanks for the reply, Nick.

I have had the system checked and is OK. It works perfect and then at random, goes warm out all vents. Upon a system break, it will function properly again. I have researched about my issue and have not found anything discussing my exact problem! I have also replaced the control unit to no avail. Interestingly, if it's blowing warm and I switch location from as an example, face to feet, as the flaps change air direction, I can feel cold come out for a split second before it changes and then continues to blow warm into the new chosen location.
June 1, 2014
  Followup from the Pelican Staff: If all electrical system checks out, no fault codes or malfunctioning flaps. Could still be a low charge. The cold burst may be from air from opposite side of evap. One side of the evap may be warming up, causing improper cooling. - Nick at Pelican Parts  
Mike Comments: 2001 330CI

My AC will be working fine and then all the sudden while driving, go warm. Only thing that fixes it is turning off the system for awhile, then turning it back on. This action is random. Sometimes it's ice cold for days at a time with no issue. Other times, it goes warm more frequently.
May 31, 2014
  Followup from the Pelican Staff: You may have a pressure issue. The system pressure could be getting too high an shutting down. I would check system pressure using A/C gauges. - Nick at Pelican Parts  
Lisa M Comments: Hi,
I have a 1996 328si bought it a couple of weeks ago, it seems that when it is hot outside my a/c stops working. This morning we replaced the climate control module the screen was bad thinking this might help the problem, and the a/c worked blowing out cool air, but when driving it later it didn't come on. HELP I'm new to the bimmer world.
May 30, 2014
  Followup from the Pelican Staff: I would start by checking system pressure. You may have a high pressure situation that is shutting the compressor off. - Nick at Pelican Parts  
Asianceo Comments: My 2006 BMW 750li A/C blows hard in the morning when I first start my car, then after running errands and restarting my car it only blows in low regardless of how high I increase the speed. Need help diagnosing this issue. Thank you
May 27, 2014
  Followup from the Pelican Staff: I would check the resistor. It may be faulty. If the signal from the control head indicates an increase in blower speed, but speed does not increase, the resistor is faulty. - Nick at Pelican Parts  
philip Comments: the a/c blower goes on and off on my 1998 BMW 323 iS on all speeds.it was working fine then it all of a sudden did that. Any idea on whats wrong with it ?
May 26, 2014
  Followup from the Pelican Staff: SOunds like a blower resistor. I would check that it has the signal from the control head If it does and still not responding, the resistor is faulty. - Nick at Pelican Parts  
Dean Comments: 03 325i heat and ac worked fine come out next morning it doesn't blow anything at all heat or air no matter how high the fan speed is set. Where should i even begin to fix this issue?
May 17, 2014
  Followup from the Pelican Staff: You may have a faulty blower resistor or blower motor. I would star by checking fuses and the signal to the blower motor from the resistor. - Nick at Pelican Parts  
REB Comments: I have a 1995 318i and the right side vents the air does not come out strong. The Driver side vents come out strong. What could it be.
May 14, 2014
  Followup from the Pelican Staff: Are the vents opened? Check the adjustment at the vent. If they are, there may be a restriction on the HVAC housing. - Nick at Pelican Parts  
maroskie Comments: i have a bmw 318.it overheated and I have changed the thermostat'all hoses,radiator and a new fan now the fan is not working but the car temperature just stays normal.what could be the problem of the fan not responding?
May 12, 2014
  Followup from the Pelican Staff: Maybe the engine isn't hot enough to activate it. I would idle engine, see if runs, if not, check the signal to the fan. It may be missing, if it is not, the new fan my be defective. - Nick at Pelican Parts  
Geaordie376 Comments: Hi i have a e46 320i tourer i had just replaced the final stage resistor yet you can hear it still turning when engine off yet if i pull the 40amp fuse out it sparks n shuts it off would fitting a master shut off switch to the battery fix this problem as this is 4th final stage resistor ive fitted in less than a year?
Thanks in advance for any help.
May 3, 2014
  Followup from the Pelican Staff: Have you confirmed the final stage is faulty? When it is on nd commanded off, check that it is not receiving a signal from the control had to be on. - Nick at Pelican Parts  
rotang ninja Comments: I have a 1998 e46 3181 sedan right hand drive. My heater seems to work but no fans? Can you please tell me where to locate the blower motor resistor? And what else might I try to solve my problem? Cheers.
April 23, 2014
  Followup from the Pelican Staff: See this tech article:

http://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E46/57-ELEC-Blower_Motor_Final_Stage_Replacement/57-ELEC-Blower_Motor_Final_Stage_Replacement.htm - Nick at Pelican Parts
 
phagen0921 Comments: I have a 2001 BMW 330CIC. Just replaced the water pump which also ruined the alternator. That was fixed. Before or actually during the process of the water pump issue, the fan became intermittent a few times got to work by stopping and restarting, plus as system leaked, after bring level back up and now after those repairs sudden stopped working. Auto temp system indicates it's working and shows fan on after heating up but no fan. Getting minimal heat from the vents, but no blower fan on A/C either.
April 8, 2014
  Followup from the Pelican Staff: There may be air trapped in the cooling system. I would try bleeding it before you dig too deep. - Nick at Pelican Parts  
Steve Comments: Hi,
I have an e36 1991 320i manual, it's a RHD in australia. Which side is the blower motor resistor. I have analogue controls.

April 7, 2014
  Followup from the Pelican Staff: I believe it is on the left side, as shown here. However, I do not have any experience with RHD vehicles. - Nick at Pelican Parts  
Ron Comments: I have a 91 318is that is blowing the number 10, 7.5 fuse. Intermittent but happens most when I attempt to accelerate quickly. Only indication is the fuel gauge, tach, and heater blower motor fail. Any thoughts?
April 2, 2014
  Followup from the Pelican Staff: See attached. Could be a loose connection in the cluster, causing a short when it moves. - Nick at Pelican Parts
KGG Comments: Hi I have a BMW E46 2003, the aircon seems to cool fine BUT strangely it cools through the side vents only however boiling air sent through the main centre vents. Even if all is turned off there is constantly heat radiating around the centre consol.If I close off the centre vents then the hot air gets redirected to the footwell. I have been told it may be the heat valve but that doesn't make sense, as if the heater was jammed then cool air wont be sent through the side vents. I've also had the external temperature sensor replaced and the fault cleared. Any ideas?
March 26, 2014
  Followup from the Pelican Staff: I would check for fault codes using a BMW scan tool. Some models will send fresh air through the center vents. If it is hot outside, this may be what you are feeling, - Nick at Pelican Parts  
buzz944 Comments: hello. i have a problem in my blower AC switch. in # 1 + # 2 + 3 are all the same blowing power. only # 4 is very strong.
any ideas?
March 18, 2014
  Followup from the Pelican Staff: Sounds like a faulty blower resistor. - Nick at Pelican Parts  
John Comments: I have 2000 528I. the heater would blow air off and on before but now no heat blows regardless of setting. however, the fan blows air when the defrost is on. please help on steps to isolate and what parts to replace. Thanks for your advise.
March 16, 2014
  Followup from the Pelican Staff: If the blower is ON all the time the final stage may be faulty. I would gain access to it, then check if it is getting a signal from the control unit to turn the blower ON>. if it is not, and the blower is ON, the final stage unit is faulty. - Nick at Pelican Parts  
Ricardo Comments: yes, I did change the final stage unit, still not working.
March 6, 2014
  Followup from the Pelican Staff: You will have to check power and control signals to the final stage and the blower motor. - Nick at Pelican Parts  
Joe Comments: 84' 733i - if a fuse will not lock out the fan control, do you know how I get to the knob to see if it broke. Also, now lights are not coming on for defrost when I push that button or any others... so maybe it is more than the knob?
February 27, 2014
  Followup from the Pelican Staff: You would have to remove the control panel. I would grab a repair manual. It will have the procedure, special tools and torque specs.
- Nick at Pelican Parts
 
Joe Comments: 84'733i- heater and a/c worked fine then I was switching from defrost to up/down heat and tried to turn the fan knob to get more air and the knob won't turn. it is stuck on zero and won't budge. Would a bad fuse lock the control for the fan? Not sure where to begin. Everything has worked fine until the fan control locked. Any suggestions
February 27, 2014
  Followup from the Pelican Staff: A fuse would not lock out the knob. I wonder if the nob has failed mechanically. - Nick at Pelican Parts  
mark08008@gmail.com Comments: Thank for your help Nick

Does Pelican Parts sell the Climate Control Module?
2001 330ci

Is it worth the time/money to replace the FSU/FSR first?
February 23, 2014
  Followup from the Pelican Staff: Yes, Pelican Parts does sell that part. if it is malfunctioning and you cannot narrow it down via testing, replacing the most common part to fail is not a bad idea. Give our parts specialists a call at 1-888-280-7799. They can help you find the right part.
- Nick at Pelican Parts
 
mark08008 Comments: - MORE ACCURATE -

The little fan INSIDE the Climate Control Module keeps running when the engine is off.

The Climate Control Module properly controls blower speed, AC...

Is this defective Climate Control Module?
Or perhaps a defectives FSU/FSR?

2001 330ci

Climate Control Module
5HB 007 738-21
February 22, 2014
  Followup from the Pelican Staff: Likely a defective climate control module. - Nick at Pelican Parts  
mark08008 Comments: The little fan INSIDE the Climate Control Module [5HB 007 738-21] keeps running.

Should I replace the unit?

Or is there a defective sensor?

2001 330ci
February 21, 2014
  Followup from the Pelican Staff: Thanks, got it. I answered your other question.- Nick at Pelican Parts  
Ricardo Comments: Hi.
I have a BMW 1998 528I, Look like the blow air got stock on hi heat and would not turn off, at first my heater control panel showed the temperature light up I disconnected the final stage unit and the blower stopped but still is hot on the floor and my heater control went off. can you help me please
February 19, 2014
  Followup from the Pelican Staff: Sounds like a faulty final stage unit. Have you tried replacing it? - Nick at Pelican Parts  
RichieB Comments: I have a e23 733i. Driver side front signal blinks fast. had a blown bulb replaced. Now all bulbs work fine, but drvr side signal still blinks fast.Passenger side fine. What's the problem?
February 19, 2014
  Followup from the Pelican Staff: Could be a side marker bulb or damaged socket. - Nick at Pelican Parts  
Tanjee Comments: Hi, My heating/cooling unit is staying on after I cut the car off and it's draining my battery dead. Can I just disconnect the unit by sliding out the heating/cooling face below the radio and unplugging it. Will this stop the energy flow. I have a small baby and need a quick resolution without the actual mechanical stuff until I get to a mechanic. Thanks.
February 16, 2014
  Followup from the Pelican Staff: This sounds like a faulty final stage unit. I would disconnect it and see if the problem goes away. If so, replacing it may remedy the problem. - Nick at Pelican Parts  
barley Comments: hi got bmw e46 1998 does the Final Stage Resistor,power the control unit
February 2, 2014
  Followup from the Pelican Staff: No it does not. - Nick at Pelican Parts  
Burnzyyyyy Comments: Hi, I've got a 316i se. The temp gauge sits straight up and only rises slightly when stood. The heater seems to blow warm when revving the engine but when stood still the blower goes cool....
Baffled!!!!
January 30, 2014
  Followup from the Pelican Staff: There may be low flow to the heater core. Check the heater hoses in and out of the heater core. Confirm hot coolant is getting to the heater core. If not, the heater control valve could be faulty or the heater core could be restricted. - Nick at Pelican Parts  
graham Comments: hi got bmw318i e46 98 my heater panel no power check fuse all ok took power lead out fans and defrost work but cant turn them of put leads back in nothink works tryed new control panel same any help plz
January 30, 2014
  Followup from the Pelican Staff: I would grab a wiring diagram from a repair manual and check the power and grounds to the panel. Something must be missing.

http://www.pelicanparts.com/BMW/catalog/shopcart/BE46/POR_BE46_TOLbks_pg1.htm #item7- Nick at Pelican Parts
 
jerryH Comments: yes it does i have plain air blowing, not cold or hot just plain, in any settings i put.
thank you nick!
January 28, 2014
  Followup from the Pelican Staff: I would address the heat issue first. Check if hot coolant is exiting the heater control valve and making it to the heater core. If not, the heater control valve may be faulty. - Nick at Pelican Parts  
Momma1963 Comments: I recently posted about this, but events have changed. When I start my car, I have no heat blowing. I can feel a small amount coming out of the top dash and it will slightly defrost the window, but nothing anywhere else. Sometimes it will kick in after I drive it for 10 minutes or so and sometimes it never kicks in. When I shut off my car, I can hear the heater still working, although no air is blowing. When I get into my car to start it again, the battery is dead. I have been reading about the FSU. If it is the FSU, could a faulty one make the heater sound like it was still running when the car is shut off and drain the battery? Thank-you.
January 27, 2014
  Followup from the Pelican Staff: Yes, a fault final stage could continue to run and drain the battery. - Nick at Pelican Parts  
Momma1963 Comments: Hi. I posted a few days ago about having no heat in my 1996 BMW 328i. Well, I now sometimes have heat blowing after I drive it for about 10 minutes, but not always. Does this mean the blower motor works and something else is wrong? My outside ambient temp sensor stopped working - it stays on -37C and now my heat gauge doesn't get above the blue line. Could all of this be connectd?
January 27, 2014
  Followup from the Pelican Staff: Is air blowing even when heat goes away? If so, the blower motor is working. - Nick at Pelican Parts  
GIBBO Comments: Hiya I have a BMW E36 316i which has A/C climate control at the moment the fan speed is fluctuating/acting erratic ie with the speed at its lowest setting the speed is higher than normal for a few seconds before returning to its normal speed then returning to a higher speed. The motor runs with no notable noise and apart from this all seems fine. Could this be the resister? If so where is the resister located right hand drive UK model. many thanks
January 25, 2014
  Followup from the Pelican Staff: This could be a faulty blower resistor / final stage. - Nick at Pelican Parts  
King Dave Comments: Have a 98 328i. I have had troubles before and am currently on my 2nd final stage resistor. This time, however, my blower won't turn on when set to auto until I manually turn up the fan to about 3/4 full, a few seconds later the fan turns on, and I can use it at all settings. Any pointers?
January 21, 2014
  Followup from the Pelican Staff: Check that the signal from the control unit is getting to the final stage, if so, is the signal getting to the blower motor? You will have to locate the missing branch, then diagnose that portion of the circuit. - Nick at Pelican Parts  
jerryH Comments: the car year is 95
thank you
January 18, 2014
  Followup from the Pelican Staff: Thanks, got it. - Nick at Pelican Parts  
jerryH Comments: hello, i have e36 320i coupe, my problem is that i turn on my manual climate control i have blown air coming out but no heat or cold air, what could be the problem?
thank you
January 18, 2014
  Followup from the Pelican Staff: I'm confused, you have air blowing or not? If none, the final stage or blower motor could be faulty. - Nick at Pelican Parts  
Momma1963 Comments: Hi. I have a 1996 BMW 328i. I can hear flaps opening/closing when I turn on/off the heat and there is some warm air coming out of the defrost vents, but not enough to defrost the window. There is no air coming out of the dash vents. I keep reading it could be the blower motor, but how do I test it to see if that is the problem.
January 15, 2014
  Followup from the Pelican Staff: If you suspect the blower motor, you can check the power and ground feed to the motor when the heat is on high. - Nick at Pelican Parts  
addi Comments: I have a 2000 318i gstring manual.when I appproach an uphilll it reduces speed it completlly wont have power.what might be the problem, fuel pump replacement or airflow sensor or something else
December 26, 2013
  Followup from the Pelican Staff: Could be a fuel delivery problem or a restricted exhaust. If power decreases and RPM increases, the clutch may be slipping. - Nick at Pelican Parts  
sbazzana Comments: Great comments Thanks Nick!
i have a 2007 328 xi coupe and i noticed recently that my blower was acting: Front Defrost works fine no problem and respond to the command. but auto climate and manual fan speed doesn't. it blows at low speed at all times regardless of the setting. i also noticed that my rear defrost was no longer working. It's been very cold here and my battery is weaker and starting has been harder. Any chance you would know where to start faulty blower ? or computer/control issues ?
December 20, 2013
  Followup from the Pelican Staff: if the blower works only on low, it is worth checking the resistor, I would imagine this could be your issue. Check this tech article:
http://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E90/ELEC-Blower_Motor_and_Final_Stage_Replacing/ELEC-Blower_Motor_and_Final_Stage_Replacing.htm - Nick at Pelican Parts
 
chris Comments: I have a 1995 740IL. My A/C turns on and off every few seconds. Sometimes it stays on for a few minutes. When it is on it does heat and cool the car. The lights on the control panel also blink on and off in sink with the blower cycling on and off.
December 2, 2013
  Followup from the Pelican Staff: The refrigerant in the climate control system may be low. Have that checked by a competent A/C technician. - Nick at Pelican Parts  
Dwetor Comments: I have a 97 318IM3 clone, and my heater blower has been working intermittently for the last couple of weeks or soo. Usually before it starts working, there is a pretty decent bang or thump that comes from under the dash. it then works on all settings, until i shut the car off again in which its a 90% chance that it will not come on again once I fire it back up. I've replaced the blower resistor. is there anywhere else you'd suggest checking before I go and replace the blower motor??
November 27, 2013
  Followup from the Pelican Staff: The bang leads me to believe the blower motor is faulty. I would grab a replacement. - Nick at Pelican Parts  
Demetrios Comments: Hello I have a 1998 323 ic Last night I changed my water pump and was happy I saved some money : but to then find out when turning the car on I have no blower fan working at all : so no heat or ac, I checked the fuse box #20 blower motor fuse was fine. Then I checked the resistor and its still getting hot .. Im not sure if that means its good or bad. but damn cant drive my car, cant see out the windows : is it safe to say replace the resistor or is there any other fuses I need to check? or maybe there is a wire in the or something that may have come done when replacing the water pump? My heat/ac blower all was well be for I did the water pump last night.. Thanks for reading my problems...
November 21, 2013
  Followup from the Pelican Staff: The resistor could be faulty. That is the most common point of failure. - Nick at Pelican Parts  
Johan Comments: My blower wont switch off, and runs the battery down. Any idea?
November 18, 2013
  Followup from the Pelican Staff: You didn't mention what vehicle you have. But it sounds like a faulty blower final stage. - Nick at Pelican Parts  
reedus Comments: I got bmw 325TDs e36.one of the fuse relay with big positive terminal burned natural .put new1 with computerbox but stil car fills like starting but won't
November 14, 2013
  Followup from the Pelican Staff: If there was a major short, you will want to find the source. It's possible there are additional burned fuses or wires preventing your vehicle from starting. - Nick at Pelican Parts  
motorheadkid Comments: I am working on a 9/96 BMW 328is, the blower motor does not work at all, if I hit a bump is comes on sometimes. Never worked on a BMW before, looks like I maybe having some fun times. Where is the blower motor on my car?

Thanks
November 12, 2013
  Followup from the Pelican Staff: I believe it's in the center of the firewall behind a cover. - Kerry at Pelican Parts  
kapoorka Comments: I have a 96 328i, fsu works and allows me the change the speed the fan should be running on but nothing comes from the vents or antying, any help would be great!
November 12, 2013
  Followup from the Pelican Staff: if I understand you correctly, the fan is running but no air is coming out of the vents? If this is the case the blower cage must be detached or broken. I would remove the blower motor and inspect them. - Nick at Pelican Parts  
Alambros01 Comments: Hey I have read all the symptoms and fixes but I can not seems to find my exact issue, im leaning towards it being an issue with relays behind the glove box, but I do not want to remove that all if I do not have to,
Symptoms,

oh also its a 11/94 build date M3
For a while, the controls for the A/C, recirc, heat, defrost and all those buttons just work when they want to. Now They are inoperable, do not light up or function.

I hear the blower motor blowing, I have heat. It changes when I change the fan setting from 1-2-3-4 it gives me a little more air, but it is NOT blowing the amount it should be. If I change it from hot to cold, it gets cold, and still blows, but the A/C is inoperable. I know something must have blown but I do not know what.
Also the heated seats have no worked since I got the car, cant really find many articles on fixing those, the switches light up when pressed but no heat in the seats, dont know if there maybe is a common fault in these cars or if that could be a related issue with the heat,

Thanks
November 10, 2013
  Followup from the Pelican Staff: This sounds like it could be a faulty control head. If the control panel turns on and off, it leads me to believe this. when the system is acting up, check for power and ground to the control head. If it is present and the head is not working, it is faulty. - Nick at Pelican Parts  
Brands Comments: Hi,

I have a '96 e36 328i and my fan fuse keeps melting every 3 weeks or so. This is the 30amp fuse, it just melts it doesnt blow at all. I have an electrical fan conversion and dont run the viscous any longer. This only started about 3 months after i did the electrical fan conversion. Could it be related?
November 3, 2013
  Followup from the Pelican Staff: Is there a relay running the fan? I would check the amp draw on the fan, also check the ground for the fan.
- Nick at Pelican Parts
 
blueknight Comments: Hello, the ac/heat will not turn off on my 1998 e39 528i 04/98.
I swapped the fsu with a working one and I too apart and cleaned the electrical buttons on the unit.
Before the swap it would work on full or four bars and the selector would have a mind of its own, temp inopporatable
Post swap, I have all the features restored with the exception of 'off'.

It will tun off and go ob again to one bar on fan.
Thanks in advance for your input.

October 30, 2013
  Followup from the Pelican Staff: Is the FSU that you installed new? Did it work correctly in the last car it was in? If not I would replace it with new.
- Nick at Pelican Parts
 
Devon Comments: Hello, I am just about to get under the hood and trade out the blower motor on my 93 325i. The problem is when i turn the knob in the car i can hear the flaps opening and my rpm's jump, but no forced air. I noticed there were warm spots on my windshield on a cold day at the vent slots, so i went to a "u pull it" place,grabbed a resistor and the blower motor from a 92 bmw. nothing changed when i put the resistor in, i was wondering if there is a way i can test the resistor or bypass it before i work on something that isn't broken? or is the blower motor broken? i can hear i hum if i listen when i pop the hood and turn the knob or push the winter button.
October 30, 2013
  Followup from the Pelican Staff: you can power up the blower motor to see if it works, you can also check the power and ground to the motor to see if they change when you turn the blower switch on and off.
- Nick at Pelican Parts
 
mazdaracer Comments: tanks for you opinion Nick but already solve the problem, the fuse that it was blowing was #19 7.5 and the problem was the relay #K7 I replace it and is working normal, that's the problem of not having the manual owners book I don't have it and my blower fan it was working only in 1 and 2 speed but when I turn it to 3 and 4 speed that's when my fuse blow, well tanks god I found the problem and I end it putting for sale to much problems with this car. tanks Nick
October 18, 2013
  Followup from the Pelican Staff: Thanks for the feedback. Glad we could help.

- Nick at Pelican Parts
 
mazdaracer Comments: my 91 318is is blowing my blower fan fuse 7.5 every time I turn on, and my speedometer, fuel and temperature is not working either at the same time.
October 12, 2013
  Followup from the Pelican Staff: the blower fuse is fuse 28 and it is supposed to be a 30 amp fuse. What fuse number keeps blowing?
- Nick at Pelican Parts
 
Mr. Mike Comments: I have a 2001 530i and the blower runs after ignition is shut off. Am sure its the Final Stage. Question: If I take the plug/wires off the resistor, will the car run fine w/no damage electrically? It's gonna be a few days before the part I ordered arrives. THanks.
September 12, 2013
  Followup from the Pelican Staff: It will be fine.
- Nick at Pelican Parts
 
Lenapeman Comments: I have a 2002 325xi - I replaced the Final Stage Resistor a few months ago to stop the intermittent fan issue and it worked great for three months. I purchased a new resistor to replace the faulty resistor. I noticed on the back of the replaced resistor it was slightly melted. I understand that I may have an over voltage issue. My question is - how do I check for over voltage to the Blower Final Stage Resistor? Thank you!
September 12, 2013
  Followup from the Pelican Staff: The final stage resistor creates a lot of heat while it is working, that is why it is installed in the heater/ac box. The air flow from the fan cools it off. If you had over voltage problems it would effect the whole car, you can check the power supply wire to the final stage and make sure it is not to high or low.
- Nick at Pelican Parts
 
Brett Comments: I may have answered my own question on the part number since I found I could browse the parts for Z3 models and found 64-11-6-912-633-M6, but it would be useful if you could confirm since I'm not sure if the Z3 M Coupe is different. BTW, I've got a Japanese model but I don't know that this should have any impact.
September 10, 2013
  Followup from the Pelican Staff: Give our parts specialists a call at 1-888-280-7799. They might be able to use your VIN to confirm the part numbers. - Nick at Pelican Parts  
al Comments: My 95 318IS has blower that stop working two days ago after funny erratic sound and I knew something was not right with the motor. I checked fuses and blower relay by swapping and nothing. Today the fan just started working again and after I stopped at store and shut off engine, I have nothing again. Could it be the motor needs replacing or resistor pack?
September 2, 2013
  Followup from the Pelican Staff: The most common problem is the blower resistor, you can check to see if the blower motor will run by using a Power Probe to supply power to it if it runs the motor it ok and the resistor needs to be replaced.
- Nick at Pelican Parts
 
Edward Comments: Thank you immensely for your help. For everyone to know, it is indeed the Final Stage Resistors. I replaced them with use dones from another e23 733i. Only one works. So yes, I have to get them new, and the Climate Control fan and speeds will work. Note, I did replace the fan with new and cleaned the microswitch. Thank you Pelican reps, you are good!
August 16, 2013
  Followup from the Pelican Staff: Thanks for the follow up. We appreciate it. - Nick at Pelican Parts  
bwm fan Comments: Ive got the HVAC fan going, it wont quit even if I turn off the ignition, and its on heat mode sends the air to the footwells. And the automatic temp control panel for the climate system is dead, nothing lights up. After reading up the forums I replaced the FSR and nothing changed. please someone help me with this problem !!!! also does anyone know where to find the blower motor relay??
August 16, 2013
  Followup from the Pelican Staff: Without knowing what kind of vechile you have I can't look up the location of the relay. If you unplug the control head, does the blower turn off? If so, I would scan the vehicle for fault codes. There may be one stored that will direct you to the source of the problem. - Nick at Pelican Parts  
BMW Fan Comments: 2002 325i
Symptoms/Sequence:
-Blower speed erratic
-Blower noisier than when new; squeaks at low speed
-Blower failed/Inoperative
-All control indications normal
-Replaced FSU
-After replacement, blower did not function
-Removed blower cover for access to inspect/test
-Turned on fan switch, blower operational although noisier
-Reassembled everything
-Next day, blower is inoperative. Control unit indications normal
BMW Dealer Service Rep. said I need a new blower motor.
Please help!
Thank you!

August 13, 2013
  Followup from the Pelican Staff: Sounds like the blower motor if faulty. If it is making noise when ON, it is likely failing. I would go with the recommendation of your shop and replace it. - Nick at Pelican Parts  
Edward Comments: Actually they're on the reverse side of the blower motor covers. Two of them, one on each side. I have replaced the covers and resistors plus the right hand side relay. However now the blower motor works at very very low speed, 1 and at full blast, 4. I get nothing at 2 and 3.
August 11, 2013
  Followup from the Pelican Staff: Something must be wrong with the connection at the blower motor resistor - Kerry at Pelican Parts  
Edward Comments: Hi to everyone. I have tried recently to get my HVAC to work.
1. Removed the cowling and got to the blower fan. Plugged the fan to the battery, runs perfectly full speed.
I DON'T HAVE POWER TO THE BLOWER MOTOR WIRES RED AND BROWN
2. Removed the dash and while before repair the leds except the defrost were dead, I have cleaned the
microswitch on the PC board and guess what, all leds light up and the vacuum flaps work.
3. Replaced the vacuum pump, now it cycles normally and activates the flaps when I change the dash vent setting
from fresh air to recirc.
4. No matter what I do, the blower doesn't work and I don't know what the problem is, please note all the fuses
are correct in the box and none of them blown


For the love of God can anyone tell me WHY everything works yet the blower motor doesn't? Where should I look?
Logically if I don't have 12V tot the blower motor is this a fuse elswere or is it the resistor pack and where is it located on an e23?

Thank you
August 8, 2013
  Followup from the Pelican Staff: The resistor is mounted to the left side blower motor housing. I would check that it is getting power and ground, it may be your issue. - Nick at Pelican Parts  
Gus Comments: I have a 1997 318i. the blower started running from time to time and now wont run at all. The AC compressor kicks on but no air blowing.
Any idea's?
August 4, 2013
  Followup from the Pelican Staff: The blower motor or resistor could be faulty. Check the fuse first, then check for power and ground to the blower when you turn it on. If it has power and ground, the blower could be faulty. If it doesn't the resisitor could be faulty. - Nick at Pelican Parts  
Jobe Comments: I hve a BMW 325I 2001 year model. My a/c has recently begun to randomly stop blowing, despite have the controls on hi and and the thermostat set super cold. Then it will randomly come back on and work for a minute or two, and then go off again. My mechanic said that the problem is a bad resistor for the blower motor, and said that he is going to have to remove the valve cover amonth other things to be able to get to the blower motor. He said that the resistor is back against the firewall and is very difficult to get to. Is there any other way to access that resistor from going through the inside of the car, or an easier way to do it.
July 24, 2013
  Followup from the Pelican Staff: On an E46 the blower resistor is located on the right side of the heater box. You can get to it by removing the glove box and a small duct. See our tech article on E46 blower resistor replacing. - Nick at Pelican Parts  
kevstergtsr Comments: My 1997 328is was having similar symptoms, with the ax controls working fine but the fan working sporadically and finally not working at all. I got a new final stage unit from the dealer and installed it, but the fan still did not work, and the new final stage unit was getting extremely hot after about ten seconds of the car being on. Does this mean a faulty part, poor something else I should look at?
thanks
July 23, 2013
  Followup from the Pelican Staff: With a proper wire diagram the final stage output voltage can be tested by back probing it with a digital volt meter. - Nick at Pelican Parts  
abood Comments: Hi I have 323i 99 i have deep sound come from the fan when i make A/C on at cold when i turn it off its not come the sound and no cold air at all come some time come few but most of time gone , i check gas it there and every one told me compresses . can you help me thanks
July 13, 2013
  Followup from the Pelican Staff: When the car is cold remove the fan belt and start the engine with the AC on. Does the noise go away? If yes then the compressor is seizing up. Do not run the engine for more than a minute since without the belt you will not have a water pump and you don't want to overheat the engine. - Nick at Pelican Parts  
HLAKS Comments: My BMW 325i 2002 air conditioner can't stop running even when the car or conditioner is switched off
July 11, 2013
  Followup from the Pelican Staff: Locate the AC compressor relay and unplug it. See if your compressor goes off. You may have a stuck relay - Nick at Pelican Parts  
Tony Comments: Hi I have a 328i e36 1996 right hand drive bmw, and cannot find the blower resistor. Can some one please assist.
July 9, 2013
  Followup from the Pelican Staff: I have only worked on left hand drive models but you probably have to remove the glove box and it should be there by the center of the HVAC box under the dash. - Nick at Pelican Parts  
keke Comments: I have power to the a/c but nothing works no motor no fan nothing, defroster the fan for the feet nothing.
June 26, 2013
  Followup from the Pelican Staff: I don't know what you mean by power to the A/C. Does your control panel light up? Start by checking fuses. You may want to grab a repair manual, it will ist the fuses and have wiring diagrams to help you diagnose the system. - Nick at Pelican Parts  
parc Comments: Help I am in need of wireing drawings and procudure to troubleshoot and replace if necessary the heater resistor and blower fan motor on a 2000 BMW 740il E38
TKS Jay 409-782-9333
June 21, 2013
  Followup from the Pelican Staff:
I would grab a repair manual. It will have a wiring diagram as well as the replacement procedure. Give our parts specialists a call: 1-888-280-7799 They will help you find what you need.
- Nick at Pelican Parts
 
Jay Comments: How do you go about testing the signal?


JIM Comments: REPLACED FINAL STAGE .DID NOT FIX PROBLEM
May 27, 2013
Followup from the Pelican Staff: Did you test the signal to the final stage as suggested? This is the best way to go about it. If signal from control panel to final stage is present, the final stage will not be the problem. - Nick at Pelican Parts
June 20, 2013
  Followup from the Pelican Staff: Monitor the input from the control panel, it should change as you change speed requests. Once you confirm the input is valid, check the output to the blower motor, it will vary as the speed requests change. Use a digital multimeter when testing. You will need wiring diagram applicable to your vehicle - Nick at Pelican Parts  
joe Comments: No Jim. My 1996 BMW 328ic Final stage resistor was where you described the part you show. The part you show is located near the heater core in the fire wall according to Pelican Parts. I ordered the the part shown which is incorrect due to your photo!
June 14, 2013
  Followup from the Pelican Staff: Thanks for the feedback. We appreciate it. Are you stating the photo in the tech article doesn't match your vehicle? - Nick at Pelican Parts  
JIM Comments: REPLACED FINAL STAGE .DID NOT FIX PROBLEM
May 27, 2013
  Followup from the Pelican Staff: Did you test the signal to the final stage as suggested? This is the best way to go about it. If signal from control panel to final stage is present, the final stage will not be the problem. - Nick at Pelican Parts  
JIM Comments: HAVE 2002 BMW X5 BLOWER MOTOR RUNNING WITH IGNITION OFF REMOVED BLOWER MOTOR FUSES FAN STOPPED STOPPED

. REMOVED FUSES BATTERY STILL DISCHARGED. UNPLUGGED FINAL











HAVE 2002 BMW X5 BLOWER MOTOR RUNNING WITH IGNITION OFF. REMOVED BLOWER MOTOR FUSES AND THE FAN STOPPED RUNNING BUT THE BATTERY WAS STILL DRAINED . UNPLUGGED FINAL STAGE AND THE BATTERY STAYED CHARGED. BLOWER MOTOR CONTROLS NOT WORKING WITH FUSES IN.




May 26, 2013
  Followup from the Pelican Staff: Sounds to me like the blower final stage is faulty. replacing it would be a good place to start. If you want to test it, check the signal from the controller to the finale stage, if there is no signal and the blower is running, replace the final stage. - Nick at Pelican Parts  
Ted Comments: I have a BMW 325I 1995 E36 air will not blow on settings 1 and 2 but works on 3 and 4 changed resistor pack but no change. Could I have gotten a bad resistor? Thanks'
May 25, 2013
  Followup from the Pelican Staff: It is possible the new resistor is defective. I would check the signals from the control head to the resistor to me sure. Check pic 2 and 3 at the resistor, those are the inputs from the switch. Pin 4 is the output to the blower from the resistor.- Nick at Pelican Parts  
jim Comments: Have 2002 bmw x5 blower motor was running with ignition off and drained battery. removed 2 fuses 50 amp and 7.5 amp blower motor stopped. charged battery 2 days later battery dead. HELP. IS FINAL STAGE ON PASSENGER SIDE.



May 17, 2013
  Followup from the Pelican Staff: Yes, the final stage is on the passenger side, above the transmission tunnel in the heater housing. Sounds like that could be your problem. - Nick at Pelican Parts  
Gee Comments: My BMW 316i 2000 model heating goes off when ever i turn it on, sometime comes on along the way and then goes off again. could anyone help me please.
April 5, 2013
  Followup from the Pelican Staff: Are you stating your blower motor for the heater works intermittently? This could be your blower motor final stage (blower resistor). - Nick at Pelican Parts  
charlie Comments: 2001 bmw 325xi battery light on when car turned off hear something running in center console under radio pull # 63 7.5 amp ac fuse noise stops
January 23, 2013
  Followup from the Pelican Staff: Fuse 63 powers the A/C compressor relay. - Nick at Pelican Parts  
Mio Comments: I have a '95 316i with no A/C. The issue is my defrost blower fan only starts after the engine gets hot.
After it starts, it works fine on any speed. But before it first starts, no matter what I do to the control knobs, it doesn't start blowing.
Should I check for the blower resistor depicted here ? Or could it be something else ?
Thanks!
January 7, 2013
  Followup from the Pelican Staff: I would check the blower resistor as it is easy to do. This would be a good starting point. - Nick at Pelican Parts  
Jeff Comments: So over the last year if not more, the heat and AC would be blowing hard and everything was good then randomly it would just cut out and stop.

The digi climate control would show full blast, no air and then suddenly, it would come back on, then off

As of now, its at the point where it basically doesnt come back on anymore and its winter time up in Toronto canada so I need the heat to defrost the front window!

Please help me out here, im a diy'r and need to tackle this asap
December 6, 2012
  Followup from the Pelican Staff: You could have a faulty blower resisitor or blower motor. I would inspect both components. Check if the blower motor is getting power and ground when the fan is turned on. If it is, replace the resistor. - Nick at Pelican Parts  
Jw Comments: Hey Wayne, thanks for helpin us out : I also have a qu in reference to the climate control. My vehical only throws out cold air when i have everything turnd to throw out heat. my vent is also not working the one over the radio usualy if i turn it from hot to cold you could hear like vent doors in the back open and close but its no longer doing that. Is that electronicaly controled or is it wire controled? quiet shore its stuck in the cold position thanks ahead
November 26, 2012
  Followup from the Pelican Staff: Check the heater control valve. It may be stuck, blocking flow of hot engine coolant to the heater core. - Nick at Pelican Parts  
Mont Comments: I have own a 2005 530i and the recent problems I have noticed is that the AC takes a while to start blowing cold air then when it kicks in its fine as long as I am going a decent rate of speed. If I get to stop in go movement it will start to cool at a slower pace and higher temperature even though it is blowing. One thing else is if I engage the auto temperature setting it will cool initially much faster but still quite some time before you will feel an effect especially in the heat of summer days. Really would like to have some idea of causes prior to the 100 buck check and then high price repair report bound to follow.
October 5, 2012
  Followup from the Pelican Staff: You could have a few different issues, from a defective cooling fan to a low refrigerant charge. I think an A/C system dignosis is in order. - Nick at Pelican Parts  
MarcoPau Comments: I have same problem as Rusty1, fan is dead and suddenly starts working like a charm when hitting a bump. I have manual a/c, and don't have the FSU, down there there's a regulator which is buzzing when I rotate the fan knob, shown in the picture.

Do you have any hint?

Thanks a lot!
September 6, 2012
  Followup from the Pelican Staff: Sounds like a bad connection. I would inspect the blower motor and resistor. Wiggle the connectors and see if you can duplicate the problem. - Nick at Pelican Parts  
jonesey58 Comments: I have a 1997 328I. whenever I use the turnsignals, the speedometer and tach needles jump and come back, can anyone please help
August 21, 2012
  Followup from the Pelican Staff: Sounds like a bad ground or short to your instrument cluster. - Nick at Pelican Parts  
Ulysses2012 Comments: Hi, I have a 98 328i and fan either works at all speeds or it doesn't work at all. It may work for a minute then stop completely for 10 minutes, then start again at random. This applies to air conditioning, heating or just the fan.
What is the most likely problem? Final stage resistor? Blower resistor pack? Or CPU unit?
Thanks a lot!
July 18, 2012
  Followup from the Pelican Staff: From your description it sounds like the final stage is faulty. However, it would be a good idea to test for power and ground at the blower motor to confirm when the symptom is present.

When symptom is present, check two wires to blower motor from final stage for power and ground. You can disconnect connector at blower, then connect a test light in series with circuit. If power and ground are present, the final stage is working normally. If not, the final stage is not sending the correct signal. Keep in mind the problem could be a fuse or bad ground. be sure to check these items also.

- Nick at Pelican Parts
 
Doug Comments: my 98 bmw 328i the fan in side climate control unit head keep running all time that make battery drain flat in 2 or 3 days.please wayne tell me what wrong with that and what to do. thank
any one know please help,thank
July 6, 2012
  Followup from the Pelican Staff: Are you referring to the HVAC blower motor? If so, the final stage is likely bad. Try unplugging it, does the blower stop?- Nick at Pelican Parts  
Frustrated single mom Comments: I have a 1996 328i BMW and the blower motor wont come on not does any ac come through the vents. The blower was tested and it works but it doesn't come on when I try to use my AC. The control panel for it started making a humming noise today so I disconnected it. What could be wrong. I'm in Texas it's hot.
April 17, 2012
  Followup from the Pelican Staff: If there is noise coming from the control panel, I would inspect it. A buzzing sound could indicate a short circuit. Check for loose connections or wiring that looks like it has been overheated. - Nick at Pelican Parts  
Rich Comments: Hi, I think my blower motor resistor failed. The last time I was driving my heater and AC and rear windshield heater all turned on and I couldn't turn them off. Two days later I try to start my car and the battery is dead. I removed my blower motor resistor, and I'm wondering if my car will run without it? My battery is currently dead, and I'm in a pinch of what to do.
April 8, 2012
  Followup from the Pelican Staff: Your vehicle will run fine without the blower resistor, but you will not be ableto defog your windshield, which could be dangerous.

If the items you mentioned came on and wouldn ot turn off, I would suspect a short circuit, not the blower resistor. Inspect the control panel and wiring. - Nick at Pelican Parts
 
Barry Comments: Help my '98 E36 is driving me mad!! when its running for about 10 mins with the heater on the inside of the car fills with water vapour though the air vents and the car then over heats. Can some one please tell me what is wrong with it?
March 15, 2012
  Followup from the Pelican Staff: Sounds like your heater core has failed. Check your cooling system level. If it is low, topit up then pressure test the system. Look for coolant leakingout of the heater box drain. - Nick at Pelican Parts  
Rick AJ Comments: hello, i have 328 1997 , there is no heat , it blow just cold no hot ,so can u help me please
February 21, 2012
  Followup from the Pelican Staff: Check the heater control valve. if it is not opening, hot engine coolant will not flow tot he heater core. - Nick at Pelican Parts  
Krazylegs Comments: I have a 98 318i the blower only works on low it use to intermittently work on all levels will the resistor cure my problem
January 24, 2012
  Followup from the Pelican Staff: The resistor could be your problem. If in doubt, check the signal to the resistor from the control panel. - Nick at Pelican Parts  
2many4me Comments: I have a constant pretty regular ticking sound coming from under the dash on my 1992 325i and the blower will not run at any speed. Could this also be part 64-11-8-391-749 needs to be replaced?
January 23, 2012
  Followup from the Pelican Staff: I would locate the sound of the ticking. It may not be related to the faulty blower motor.

Inspect the blower motor and resistor. Then replace what is needed. The resisitor is a good place to start. - Nick at Pelican Parts
 
john Comments: Thanks for the start, just did the FSR Resistor exchange on 1997 328i
3 screws hold cover LT and RT of steer column,and one more above gas peddle, courtesy light plug, chime has two connections,one white one blk. Resistor Pkg is held in duct work with 2ea Torix Headed self tappers. Seeing the upper back one is or will make you believe in gymnastics.
January 16, 2012
  Followup from the Pelican Staff: Thanks for the feedback and additional information. - Nick at Pelican Parts  
Dawn Comments: 99 323i replaced blower motor and resistor but it still doesn't seem to be heating up enough. We put the old resistor in and it get a little more heat but not like it should. Is there something else we could check. Does this car have a resistor pack that could be causing that problem?
January 14, 2012
  Followup from the Pelican Staff: Check that your heater core is getting proper and warm coolant flow. You caould have a fault heater control valve, blocking coolant from entering the heater core.
- Nick at Pelican Parts
 
Tony Comments: I have an 98 328is with an automatic a/c. The a/c and the heater has a mind of own, it comes on and goes off by itself. I can turn it off when its running, but when it is off I can't turn it on. Any ideas???
January 7, 2012
  Followup from the Pelican Staff: I would suspect the heater control panel. It may be internally shorted, casuing it to turn on and off without input from you. - Nick at Pelican Parts  
hammer1 Comments: my ferrari f355 hvac unit is allways on and when key off it goes off but when key on cant shut off speed works on 4 and 5 top speed but not on 123 and off button can this be a blower resistor
January 3, 2012
  Followup from the Pelican Staff: Yes indeed this does sound like a typical blower resistor type issue. - Wayne at Pelican Parts  
Icecuberyder Comments: Hello Pelican staff:
I have a strange problem with my 09/95 E38, when it is really cold outside more than -9°c and there is high moisture in the air I get the following symptoms : If I turn on the Recirc and rear window heater, they turn off after a random time, 15sec to 6min., and sometimes I hear very light relay clicking from under the glovebox. I suspect that some connections or module may have bad connections, but am unsure which box controls these functions, the LCM or the GM, can you shed any light on this? The indie bmw shop can't seem to find this, and I hesitate to go to the st/dealer just yet.
December 13, 2011
  Followup from the Pelican Staff: The clicking may be a mode door on the heater control housing.

I would check the IHKA system for fault codes. If it is shutting down when it is humid, there may be a fault code stored related to this. The control panel could be faulty, or reacting to feedback from a sensor. - Nick at Pelican Parts
 
emoor Comments: Thanks! After pulling the glovebox per the Haynes Manual and wasting hours searching in vain, your step by step instructions helped me replace the heater fan resistor quickly.
December 11, 2011
  Followup from the Pelican Staff: Glad we could help. - Nick at Pelican Parts  
feex Comments: Hi, i have an E36 bmw thts blowers dont work on any settings!! got hot and cold air, can u help me? snow and ice here now, cant defrost my car :
December 5, 2011
  Followup from the Pelican Staff: You coould have a faulty blower resistor or control panel. I suggest checking the sigbal from the control panel to the resistor. If the signal is good, replace the resistor.- Nick at Pelican Parts  
teko Comments: I have 2002 325i and it does not blows but no heat on low speed, on high speed it blows heat. my battery is getting out as the sign shows, are those related?
November 30, 2011
  Followup from the Pelican Staff: If the fan only works on high, inspect the blower motor final stage. It could be faulty. - Nick at Pelican Parts  
Nick94 Comments: Hello everyone!

I am 17 and from Canada. Got my first Bimmer and my first car on the weekend... A standard '97 328is.

It runs great, but there are a few things that should be fixed up over the next while. One thing I would like to jump on is the blower.

It turns off and on by itself, and so do the cabin lights by the pedals, thus, we are thinking these two symptoms are related, and that the source is an electrical malfunction, not the blower motor. Any ideas as to what might be happening?

Any advice is appreciated! I am new, and I do not know a whole lot, so your patience is appreciated!

Thanks,

Nick
November 16, 2011
  Followup from the Pelican Staff: The cabin lights might be a malfunctioning door switch.

The blower issue may be a faulty blower resistor or control panel. When the problem is present, check the signal from the control panel to the blower resistor.- Nick at Pelican Parts
 
ADLS Comments: My nephew just bought a 96 BMW 328i. After 15 min. of hwy driving, lower vents are super hot. As well as his right ankle. We set the temperature down to 60 degrees on both sides. Then we turned the blower all the way down till it shut the climate control pnl. off. Still blows low speed, but super HOT air. Any ideas?
November 15, 2011
  Followup from the Pelican Staff: Check to see if the heater control valve is stuck open. It could be sending hot engine coolant to the heater core all the time. Which would make it hard to turn the heat off. - Nick at Pelican Parts  
Mike Espy Comments: Could the intermitent blowing of my Fan/Heater in my BMW 316I SE even when the car is completely switched off have anything to do with the resistor? This goes on for hours and kills my battery. The car couldn't start in the morning because the battery was flat. Any Ideas please?
November 9, 2011
  Followup from the Pelican Staff: It sure could. I would check the signal to the resistor from the control panel. If there is no ON signal and the blower is running, the resistor could be faulty. - Nick at Pelican Parts  
Mike Espy Comments: The fan/heater in my BMW 316I SE keeps blowing on and off even when the car is completely switched off. It runs down my battery and I had to jump start the car in the morning. The car was parked for six hours.
November 9, 2011
  Followup from the Pelican Staff: It sure could. I would check the signal to the resistor from the control panel. If there is no ON signal and the blower is running, the resistor could be faulty. - Nick at Pelican Parts  
Pelicanpartsbiggestfan Comments: My control unit to my 98 M3 cabriolet is digital. I heard that it is different from the analogue one shown above. How is is different; as I will be replacing mine in the next couple days. Thanks
October 28, 2011
  Followup from the Pelican Staff: Assuming you have automatic climate control, that would be the main difference. - Nick at Pelican Parts  
Tony Comments: I an 1994 E36 manual heat/cool controls that has a blower that works intermittently fuse is ok; when the electrical is turned on whether started ot not. The blower never comes on while the car is running, only when the started or electrical is turned on. Sometimes it goes 2 - 4 days without working. I replaced the blower resistor this week but it did not resolve the problem. What is the least extensive troubleshooting task that I can try next ...control unit?
October 28, 2011
  Followup from the Pelican Staff: It could be the control panel. The only way to know for sure is to test the signal from the control panel to the blower resistor. If the signal in present and the blower is not turning on, check the output to the blower motor. - Nick at Pelican Parts  
Cel Comments: I have a 1994 BWW, 318, and the A/C Control unit digital sometimes turnoff itself, does not work at all, then, suddenly, it starts working again, I replaced it, but same problem persists, so is not the unit. Any idea or suggestion?
October 24, 2011
  Followup from the Pelican Staff: Check the connections are good and it is getting the correct ignition on signal. - Nick at Pelican Parts  
Triple Comments: I have a 2008 BMW 328I, AC worked fine one day next day it wouldn't blow any air, the AC still works but doesn't blow hot or cold at all,could it be the resistor?
October 15, 2011
  Followup from the Pelican Staff: It could be the resistor. I would inspect it, check if it getting the correct signal from the control panel. - Nick at Pelican Parts  
drew Comments: I have a 99 323i and my blower/heater fan is stuck on.Even when i shut the car off.Im finding myself disconnecting my battery every where I go.I cant afford to fix it now but would like to know how to shut it down.Please help...
October 15, 2011
  Followup from the Pelican Staff: I would check if the blower resistor has failed. Sounds like it may be your problem. - Nick at Pelican Parts  
Draken Comments: What makes the heater fan work. I bought this car and wasnt aware of this happening fan didn't work at all? I can get the resistor for cheap but can't even find the old one in the car.
October 13, 2011
  Followup from the Pelican Staff: Without knowing what vehicle you have I can't be much help. I can tell you, most BMWs have the blower resistor on the passenger side in the heater housing. - Nick at Pelican Parts  
Bubba Comments: Hi Wayne, I have a 1997 328i that the AC/Heat would not since I bought it. I sent my climate control out to be fixed digital display was not working properly they sent it back, non-fixable. Ordered a newer one, still no air but can read all digital characters. I found the resistor in the glove box, someone had obviously pulled it out, I put it in it's location. When I push the AC button, the compressor kicks on but no air. I have a new resistor ordered and waiting on it now. Any suggestions as to what it may be if the new resistor doesn't make a difference? I want to sell the car and here in Florida AC is crucial selling point! Thanks!
October 3, 2011
  Followup from the Pelican Staff: if it isn't the resistor the only things left are the blower motor or a fuse. Check those, if you have to. - Nick at Pelican Parts  
Cara Comments: HI, I have a 1997 328i and my heat isn't working properly. The blower works fine but will only blow cool air when I am in idle and blows hotter air when I am driving faster. Does that seem like a blower resistor that needs to be replaced? please help, winter is coming soon!

thanks,
Cara
September 30, 2011
  Followup from the Pelican Staff: No, that sounds more like a coolant circulation problem. You could have a faulty heater valve or a restriction in the heater circuit. - Nick at Pelican Parts  
Gary Comments: I have a 1996 E36 328i with digital climate control. I replaced my final stage unit. The fan still only works intermittently. Does my car also have the blower resistor? Should I try replacing that next?
September 24, 2011
  Followup from the Pelican Staff: Your vehicle has the final stage unit and a blower motor relay. Check to see if the relay is functioning properly. It is located in the power distribution box. - Nick at Pelican Parts  
Rockhead88 Comments: I have a 2002 325ibmw my blowmotor runs when not on
September 3, 2011
  Followup from the Pelican Staff: Replace the blower motor final stage unit. It should remedy your problem. - Nick at Pelican Parts  
rikk Comments: I have a 1997 bmw 328i convertible the heater comes on sometimes and everything works fine but uasually never comes on. Sometimes I will be driving and it comes on, then I turn it off and it comes on again, what is the problem?
September 3, 2011
  Followup from the Pelican Staff: You can start by replacing the blower resistor. This may be your problem. - Nick at Pelican Parts  
Thomas Comments: I have a bmw 325i 2001 within few week sometime the fan stop working and now it finaly stop,i don't that the fan problem or the resistor problem,i need help please.thanks.
August 13, 2011
  Followup from the Pelican Staff: Turn the blower ON, then check for power and ground to the blower motor. If not present, replace the blower final stage unit. - Nick at Pelican Parts  
WillieR Comments: I have a 02bmw 325xi the blower works some time and some times it doesnt what the problem
July 24, 2011
  Followup from the Pelican Staff: It could be your blower final stage, which is themost common item. But do not over look the blower motor and IHKA control panel. - Nick at Pelican Parts  
Jun Comments: I have a 1992 bmw 525i I have a problem with the auxilliary fan, the auxilliary fan does not work at all even you turn on the ac, any idea what is wrong or what parts to replace?j
July 22, 2011
  Followup from the Pelican Staff: It could be the fan itself has failed. Check to see if there is power and ground to the fan when you turn on the A/C. - Nick at Pelican Parts  
danny Comments: my bmw318 E46 year 2000 the fan in side climate control unit head keep running all time that make battery drain flat in 2 or 3 days.please wayne tell me what wrong with that and what to do. thank
any one know please help,thank
July 18, 2011
  Followup from the Pelican Staff: I would unplug the blower final stage and see if the fan shuts off. If so, replace the final stage. - Nick at Pelican Parts  
Ron Comments: What is causing the blower fan to turn off and on whether it is on low or high settings? It does the same for both a/c and heating.
July 4, 2011
  Followup from the Pelican Staff: You could have a faulty blower resisitor or blower motor. - Nick at Pelican Parts  
John Comments: My BMW is a 1966 e36 325tds. My problem is a chronic battery drain . Could this be due to a defective FSU or blower resistor or both ?. I have located the blower resistor, but unable to find the FSU unit anwhere under the dash on right or left footwelld. Comment welcome. John
June 24, 2011
  Followup from the Pelican Staff: E36 models utilize a resisitor not a final stage unit. I would monitor current draw while checking the electrical system for the circuit causing the draw. - Nick at Pelican Parts  
mrwilson Comments: I have a 94 325i convertible that has the blower resistor problem. It blew the new one also. Does anyone know what the current draw from the fan through the resistor pack should be? Fan seems to be working fine. No drag or blockage. Also, any ideas what the value of the thermal cutoff is? I have read that it could be 120C. If I knew the stock temperature I could replace the thermal cutoff with a bit higher temp to compensate for the old fan drawing too much current. Seems I can't fix the problem without this information. I have cautiously bridged the thermal cutoff with a heavy gauge wire for now. Fan works fine, but a bit worried about how hot it can get...
June 17, 2011
  Followup from the Pelican Staff: I would advise against bypassing any factory circuit protection device, this is the quickest way to start a fire in your vehicle

The blower motor may be drawing too much current. A fuse is normally rated at 135% of normal operating current of the circuit. Use that to helpy ou determine the correct current draw on your circuit. - Nick at Pelican Parts
 
Ace Comments: , I hear the fan motor running but the air dosn't blow through the vents, although you can feel it ice cold blowing at your feet. I have replaced the climate control unit to a new one and it still didn't resolve the issue, all relays and fuses are good. any suggestions
June 15, 2011
  Followup from the Pelican Staff: Check that the heater box flaps are moving when you switch the air vent selection. - Nick at Pelican Parts  
John Savio Comments: I have a 92 e36 rhd and I cannot find the blower resistor in either sides. Pls help me as the blower only works on the highest settings and I think the blower resistor might be the problem. Help pls.
June 13, 2011
  Followup from the Pelican Staff: Double the right side, it should be near the transmission tunnel, mounted in the heater box. - Nick at Pelican Parts  
Tipu Comments: I have 2002 BMW 325I. The blower seem to run all the time even when the key is not in ignition. The blower starts slow and gets louder and slows back down by itself. The A/C or heater only works on the driver side, passenger side blows hot air when A/C is turned on. What should I replace?
June 8, 2011
  Followup from the Pelican Staff: Sounds to me like the blower resisitor has failed. I think it is Ok to replace it. - Nick at Pelican Parts  
John Comments: I have a problem removing the cover , all screws removed : the cover comes out only partially, but remains held on behind the gas pedal, have tried pulling but still remains jammed. Is the a screw there that I cannot see ? Thanks for any suggestions. John
June 8, 2011
  Followup from the Pelican Staff: Inpsect the area that is snagged for remaining fasteners. - Nick at Pelican Parts  
csix Comments: Hi Wayne, living in Oz I have a RHD 85 E24 M6 which has developed a blower problem,in that when ignition is on it is running at around half speed. The rotary dial will make it increase to full but turning it off will still have it running at around half speed.This happened after an elec burning smell & wisps of smoke out of the bonnethood air intakes. Do look for whatever is amiss on the left side of the vehicle, and what do you suggest I replace.
June 6, 2011
  Followup from the Pelican Staff: It's hard to suggest what to replace, expecially if there was a short. I would start with inspecting the blower motor resistor and the blower motor. The biggest challenge is finding the source of the smoke. - Nick at Pelican Parts  
Patrick Comments: I have an interesting question for you. '93 325i. I replaced the original resistor pack when the blower would only work on the forth setting. The new one i installed also broke. Thinking it could have been a faulty one, i replaced it again and this one ALSO broke. Before i dare to put another one in, i'd like to know if you have any suggestions. Could there be something else that is causing it to break? Thanks in advance
June 5, 2011
  Followup from the Pelican Staff: If there is a short in the blower motor or the wiring harness, the new resistor pack will fail. - Nick at Pelican Parts  
Scott Comments: Spot on the money: Fixed the no-blow on 1,2, or 3 settings in a matter of minutes.
June 5, 2011
  Followup from the Pelican Staff: Thanks for the feedback. - Nick at Pelican Parts  
middle1956 Comments: 1996 BMW 328i blower motor not working when cold. I pulled the green relay in the fuse box and put it in the freezer. When I installed it it wouldn't work until it warmed up just like in winter. I didn't know these relays could do that! I wanted to help someone else that might of had the same issues.

Thanks, Russ
May 31, 2011
  Followup from the Pelican Staff: Thanks for the tip. I'm sure it will be helpful to someone. - Nick at Pelican Parts  
Mike Comments: I clicked on the hyperlink to order part 64-11-8-391-749 blower resistor pack. The link that came up is part # 64-11-8-391-749=m6 blower resistor. Is this the same part? I have a 95' 318ic and the blower works only on speeds 3 & 4. Thanks.
May 11, 2011
  Followup from the Pelican Staff: Give our parts specialists a call: 888-280-7799 They will help you find the right part. - Nick at Pelican Parts  
Kourosh Comments: on my E36 M3 US Model the ac/heating blower works but it doesn't blow hard air like it used to . when is on low speed i can barely feel the air and when is on max it feels like low speed.
they told to changed the pollen filter might be clogged up witch i did and still the same :
what is the problem and how can i fix it ? PLZ
i live in Houston and weather is getting too hot now i need to fix it ASAP
Thank You
May 5, 2011
  Followup from the Pelican Staff: Check for a restricted or mis-installed cabin filter. If that is OK, inspect the blower resisitor and blower motor. - Nick at Pelican Parts  
middle1956 Comments: See last 2 questions I tested the power to the final stage unit. When at first the blower won't run there is no power to the plug. Like before when it does come on there is power. With the volt meter on the final stage plug I can see there is no power then after a few minutes I will get power. Key is on and climate control unit looks like it's working fine. Where does the power come from that feeds the final stage? Fuse, another relay?

April 25, 2011
  Followup from the Pelican Staff: There is a blower motor relay that sends power to the resistor when the key is ON. Power to the relay comes from fuse 20 (30amp) in the front power distribution box. - Nick at Pelican Parts  
middle1956 Comments: Thank you for the advice. The control unit should be good. In a chat room I found a way of test it. They said to unplug the final stage and put a volt meter on one of the female ends. I'm getting all the readings with all the fan speed settings they recommended or close to it.
1. 2 volts
2. 2.45 volts
3. 2.88 volts
4. 3.3 volts
5. 4.1 volts
6. 4.84 volts
7. 6 volts
8. 8 volts
If you still think it could be the unit I'll try to find one. I'm really stumped on this one. Thanks
April 18, 2011
  Followup from the Pelican Staff: The next step I would try would be to put the voltmeter on the blower motor itself (if you can reach it and hotwire in there), to see what voltage is being applied directly to the motor. It may be a weird problem where the voltage is correct, but there's not enough current to drive the motor. Odd, but definitely possible I suppose. - Wayne at Pelican Parts  
middle1956 Comments: My 1996 BMW 328i won't blow air when I start it up. It will kick on after 5 minute by itself. In winter I have to run it on high motor not running then turn it off for 10 minutes and try again. When it's running it works like normal. A few minutes in the store and I have to start this all over again. I've replace the blower motor, final stage and sent my unit in for repair. I don't know what to replace or check next.
April 17, 2011
  Followup from the Pelican Staff: It sounds like it could be a problem with your control unit. But if you've had it repaired, then I'm not sure. At this moment, if you can swap out the control unit with a known good one, then that would probably be the next step that I would try. - Wayne at Pelican Parts  
flozzer22 Comments: hi my bmw e36 318is the heater turns it self on and off when i try to turn it on it does not wont to
but as soon as it comes on it works fine then when i turn the engine off nothing but might turn on again : any ideas
April 13, 2011
  Followup from the Pelican Staff: You could have a bad resistor or blower motor. Inspect the resisitor first. - Nick at Pelican Parts  
ws Comments: Thanks for that! The photos in the writeup were much better than the ones in the Bentley manual. This repair worked like a charm, although the old resistor was quite stubborn coming out.
April 6, 2011
  Followup from the Pelican Staff: Thanks for the feedback. Glad to help. - Nick at Pelican Parts  
Fuzz Comments: The climate control digital unit doesn't light up or function in my 96 328is. All the fuses are OK. With engine running the AC compressor is working clutch engaged and the front ac condensor fan also runs. However there is no power to the ac control unit and no air thru the vents. Could it be the resistor pack or is the control unit shot? Is there a cheap fix for this? Help much appreciated.
March 29, 2011
  Followup from the Pelican Staff: If the A/C control unit doesn't light up or doesn't have any signs of life at all then it's very likely that the control unit is shot. Indeed check all the fuses first before replacing the unit. - Wayne at Pelican Parts  
grimreapersupra Comments: I have 2002 bmw 325i the blower motor just quit. I replaced the motor with no luck. Is it this resistor your talkin bout the problem? or the one behind the glove blox?
March 21, 2011
  Followup from the Pelican Staff: It could be the resistor, the relay, the fuse or the control unit. I would check the actual blower motor by applying 12 volts to it as a test. - Wayne at Pelican Parts  
Frog Comments: E30 Resistor part #: 64116912633
March 17, 2011
  Followup from the Pelican Staff: Thanks - Nick at Pelican Parts  
Bumper Comments: Thanks, Wayne. Am really looking forward to doing that job. Not.
March 13, 2011
  Followup from the Pelican Staff: HAHA, Thanks for the feedback. - Nick at Pelican Parts  
Bumper Comments: Does anyone know if the replacement procedure is the same for 633 series? Thanks
March 8, 2011
  Followup from the Pelican Staff: I believe it is extremely similar for all the BMWs. - Wayne at Pelican Parts  
Geoff Comments: I have a 1998 328i the Climate Control seems to work but when the outside temp hits around 85 degrees the ac can't keep up. I had the system checked for correct charge and leaks, and checked air temp at register, all looks good. The fan just doesn't seem to blow enough air. Any ideas?
March 6, 2011
  Followup from the Pelican Staff: I believe on your car, there is an Auxiliary fan that goes in front of the condenser (there's definitely one on my E39 5-Series). If this fan fails, then the condenser will not work very well - I would check there first. If you can't find the problem, it may be that there's dust in the evaporator, preventing air flow? You said temps are fine, so the issue must be volume. Other than that, I would think tinting the windows would be a bandaid solution. - Wayne at Pelican Parts  
commited Comments: looking to replace blower restistor. Mechanic has done it twice in two years. I looked at the diagram on this site. I am not sure it is the same. Looking for the location of the resistor on a '97 bmw 328i convertible
March 1, 2011
  Followup from the Pelican Staff: I believe it's still located in the same spot for all of the E36 cars. Either that, or in a very similar spot. - Wayne at Pelican Parts  
Jim Comments: Thanks Wayne for the advice. I replaced the resistor pack on my 94 and fan seems to be working fine. Easy to do as well! Jim
February 27, 2011
  Followup from the Pelican Staff: Great! Glad it worked out for you! - Wayne at Pelican Parts  
Rich Comments: Hi can u please tell me where the hedgehog of final stage resistor Is located on a 97 e36 323i is please and is it this that is making my heaters blow fast even when there set on slow spend thanks
February 25, 2011
  Followup from the Pelican Staff: I'm not sure what a hedgehog is, but the final stage resistor is shown in the above article? - Wayne at Pelican Parts  
E36 WWU Comments: Hey Thanks for the great article, hard to get the damn thing out but these instructions were very helpful,
February 24, 2011
  Followup from the Pelican Staff: Glad the article was helpful. Thanks for the feedback. - Nick at Pelican Parts  
thor Comments: I have a e39 2001 and there is no airflow coming from the foot vents ?
February 9, 2011
  Followup from the Pelican Staff: Typically when you don't have airflow coming to the vents that should have airflow, the little flappers in the air duct system are not working properly. But, there are typically separate ones for each side, so it's unusual for both sides to not work properly. Perhaps there is a problem with the controller, or the buttons themselves. Still unlikely, but this is an odd problem (to have both not working). - Wayne at Pelican Parts  
kevo Comments: i have a 2002 bmw 325i. when im driving the car the heat comes out but when i turn the fan up it doesn't change it just stays the same speed. and when i am at idle it doesn't come out at all resistor? or blower motor
February 9, 2011
  Followup from the Pelican Staff: It might be the fan resistor - I've heard of this problem before, and I've also heard that the blower resistor replacement can fix it (but not always). If the blower motor is working at all, then it should be good. The resistor controls the variable speeds of the motor, so it sounds like replacing it would be a good bet here. - Wayne at Pelican Parts  
Rusty1 Comments: The heater blower motor on my 94 325I sedan has stopped working.
It started out intermittently working/failing. It would only come on if the fan was shut off before the engine was turned off. Then would only work is I hit a "bump" in the road. Finally only when I "tapped" the blower motor housing itself with a probe 1/2" dowel. Now it won't turn on at all but does make a sound as if the motor is trying to start but was some how bound up. Could it be Junk in the housing pine needles or the brushes gone in the motor. I replaced the Resistor hoping that would do the trick, : it didn't.
Any help or disassembly instruction would be greatly appreciated. BTW my skill level is 7-8 Have rebuilt a 87 535is
January 31, 2011
  Followup from the Pelican Staff: Hmm, I would maybe guess that the blower switch itself is working (assuming you have manual heat). I remember in the old days with the old rotary knob TVs - the switches would wear out, and then you had to wiggle them to get some stations to work. What you're describing reminds me of that - a failing switch. I would try to replace the unit with the switch in it and see if that makes a difference. - Wayne at Pelican Parts  
Martinukbmw Comments: I have a 98 3.18is saloon with climate control. The blower started making a ticking noise which gradually got louder until the blower stopped working about a month after the first noise. I've exposed the motor and you can give it a push start and it comes back to life but making a noise however with no power it spins freely and quietly.
I've push started it today and only the windscreen control keeps the blower running all other settings are slow and come to a standstill.. Blower motor, final stage resitor or? I have never had warm or hot air form the cnetre console vents either. The dial for hot and cold can be spun right round, i thought at the time this was a part no longer required with the climate control unit being installed but maybe somethign has come aprt form the control and I have it stuck in cold air postition?
Many thanks
January 23, 2011
  Followup from the Pelican Staff: Hmm, if the blower motor works fine, but doesn't work at lower speeds, then it's most likely a resistor issue. On the other hand, you seem to talk about the actual motor failing or "clicking". This is more likely an issue with the motor brushes wearing out. It's best to replace the motor, or if you're really handy, you can disassemble the motor and replace the brushes (which are a wear part). As for the climate control unit, I'm not sure - it's one of those things where you would have to see the car in question. Maybe the dial on your heater control is broken - try pulling it off to see if the actual knob is cracked? - Wayne at Pelican Parts  
IIIJuanioIII Comments: I have a 93 325i e36, my ac used to work on high speed when i hit it over the dash or when i went through street imperfection it would turn on. Then it stopped working but one day my girlfriend slammed the passenger door and it turn on again. Now it wont work at all..... any suggestions???
January 11, 2011
  Followup from the Pelican Staff: Ahh electrical gremlins, very difficult to diagnose. I would check all the fuses to make sure they are not loose, and also reseat all of the connections to the A/C control unit. If you have someone with a spare unit handy, you might want to try replacing it to see if the electrical problem is located inside the unit. - Wayne at Pelican Parts  
ao Comments: question after i disconnect the chime speaker do i completely remove the cover form the car or just pull it down far enough because i can not see the pack back
thanks
December 27, 2010
  Followup from the Pelican Staff: If you can reach it without pulling the whole cover off, then that would be great. The trim changed on the cars through out the years, and this may or may not be possible with your car. - Wayne at Pelican Parts  
Jim Comments: I have a 94 318i E36. Fan iether works on all speeds or it doesn't. Doesn't seem to matter whether car has been driven or not. Most of the time it works, but sometimes, nothing. Fan doesn't make any odd noises.
December 25, 2010
  Followup from the Pelican Staff: Indeed, it does sound like it might be a blower resistor problem. I would follow the instructions in this article and replace it before moving on to other potential causes. - Wayne at Pelican Parts  
Jon Comments: I have a problem where the blower only blows on LOW speeds. High speeds are the ones that don't work. I have a 97 328is with digital climate control and from what i've heard so far most people have the problem where it only works on high speeds and the final stage unit needs to be replaced. Do you think i need the same part? i do need to check the fuses which is the first step I should have done but I just haven't done that yet.
December 20, 2010
  Followup from the Pelican Staff: I would try changing the blower resistor first, as it's generally the cheapest component that typically affects this. However, as you noted, it typically causes the low speeds not to work, the opposite of what you have here. Then I would try replacing the final stage unit. Lastly, then I would look at the controller itself - there is a capacitor problem in these units that causes other problems, but it might be related to this. - Wayne at Pelican Parts  
Reyes Comments: i have a 93 bmw 325i just replace d water and bleed d systen but there is no heat when car is at idle only cold air come out but when driving on a hwy i get hot air any idea on how to fix that so i can get heat whem car idle also. thanks
December 14, 2010
  Followup from the Pelican Staff: See my article on coolant system bleeding - you probably need to do this a few times in order to get all of the air bubbles removed. When I did my head gasket, I found I had plenty of air in there, and it didn't bleed all the way out until I had bled the system 2-3 times completely. - Wayne at Pelican Parts  
jose Comments: i have a 1993 bmw 325i and my blower motor only work on high speed any idea also the heat dont work properly, after d car warn up at idle speed blow cold air and went im driving or high idle blow hot air. i just replace d water pump and bleed d system top d fluid still have same problem. any idea what it may be. thanks
December 9, 2010
  Followup from the Pelican Staff: High speed only typically means that the blower resistor is faulty. Could also be the switch too, but my money's on the resistor. - Wayne at Pelican Parts  
OSMOSIS Comments: I JUST REPLACED MY FSU, THE AIR BLEW FOR ABOUT THREE DAY, BUT NOW AIR DONT BLOW ANY MORE. ALTHOUGH I SET THE BLOWER HIGH ,,,,,,PLSE I NEEED EXPLAINATION, THANKS
December 6, 2010
  Followup from the Pelican Staff: Not sure, it might be the blower motor, or the blower resistor that is causing problems. - Wayne at Pelican Parts  
felix Comments: i cannot find it i have a bmw 325i 1990 please help.....
November 26, 2010
  Followup from the Pelican Staff: Here's a neat article I found on this: http://e30.bmwdiy.info/blower-resistor/index.html - Wayne at Pelican Parts  
Diggzee Comments: Is this the same process for a E46 M3? My climate control seems to be working fine and I get heat and AC just the blower seems to be affected.
November 24, 2010
  Followup from the Pelican Staff: Yes, the process should be very similar. - Wayne at Pelican Parts  
El Comments: I have a 2001 325i. Everytime I start my car, the fan is on to about the 3rd bar, and I have to turn it off manually... When the fan is on, air comes out, and increases properly if I increase it, however I hear a whirring sound that immediately stops when I shut the fan off. Someone mentioned it may be the Blower Motor Resistor or possibly the Blower Motor itself... Any ideas?
November 9, 2010
  Followup from the Pelican Staff: I'm not sure if that is standard behavior, as I have a few cars that turn on the fan automatically (I think my 5-Series does it on the lowest setting). I'm not sure about the whirring sound, most fans typically make a sound similar to that? - Wayne at Pelican Parts  
rich Comments: my ac doesnt work on 1 2 or 3 only 4 but the worst part is that now there is a heavy noise coming out of the ac unit..any idea on how i beging replacing this?
November 4, 2010
  Followup from the Pelican Staff: It could be one of many things, but it does sound like it may be the blower motor that is located behind the dash. The resistor would cause it to not work on 1/2/3, but probably wouldn't cause a noise with the motor. Or, if the motor is failing, then it might be that it also caused the resistor to fail by sending too much current (back EMF) through it. - Wayne at Pelican Parts  
fledda Comments: I have an E38. The AC workd fine from a cold start. After driving a few miles and doing errands when I restart the AC won't work. The blower is not working eveb after pressing the button to the highest position. We replaced the blower and the resistor. Now it blows good air when adjusted manually but in auto mode even if temp is set at 60 and outside temp is at 85, it is not blowing hard enough to cool the car. What else should we be looking at or test to determine the problem?
October 28, 2010
  Followup from the Pelican Staff: This is a difficult one to diagnose, but there is a potential easy fix. The outside air temperature sensor often breaks or becomes damaged from road debris. I would verify that this is in place, and/or replace it. The car may think it's really cold outside and just blow outside air inside, instead of cooling it. - Wayne at Pelican Parts  
beamerguy Comments: Dear Wayne at Pelican Parts, mine is 1997 328i, my blower is not working in any setting. The control unit seems to show proper settings but no air flow. Is the blower resistor in the same location right side of gas pedal as decribed in this post?
October 9, 2010
  Followup from the Pelican Staff: Yes, the resistor should be on the right side.

Once you access it, check that you are getting the correct signal from the control panel. This is the best way to determine if it is the control panel or resistor. - Nick at Pelican Parts
 
Rithdoc Comments: I have a 2000 323i and the A/C has stopped working. The digital display still shows it as working but no air comes out. This is also the case for the heating as well as the cooling. I know the FSU can cause problems such as only working on the high setting but can a bad FSU also cause it to not work altogether?
September 8, 2010
  Followup from the Pelican Staff: Yes, I believe the Final Stage Unit can cause this problem, but I would check the pressures in the system first (see here: http://www.pelicanparts.com/bmw/techarticles/101-Projects-97-AC/101-Projects-97-AC.htm - Wayne at Pelican Parts  
jonesey Comments: I have a 97 328I, my blower will not come up to full speed, even though it is in indicated on the dash display. it only works half speed. any ideas???
September 6, 2010
  Followup from the Pelican Staff: Indeed, sounds like a blower resistor that has failed. Replacing it should fix the problem. - Wayne at Pelican Parts  
Ati Comments: I have replaced the blower resistor and solved all my problems. Thanks
August 30, 2010
  Followup from the Pelican Staff: Thanks for the feedback. - Nick at Pelican Parts  
Bob Mc Comments: I have a 92 325 ic, E30. Fan only runs on high speed and wish to replace my resistors. How is this done on the E30? Where are they?

Thanks

Bob
August 28, 2010
  Followup from the Pelican Staff: The resistor is under the hood, mounted inside the blower motor housing. - Nick at Pelican Parts  
Ati Comments: I had my 2001 325i E-46 parked for a 1 ½ month outside, when I restarted the car the blower wasn’t working in any setting. Couple of days later my wife driven the car and the blower started working, that is good news, but after shutting off the engine and removing the key the blower is still on. That is not so good news. I removed the fuse. Could that be the blower resistor? Please help..
August 25, 2010
  Followup from the Pelican Staff: That sounds like it's more like the control unit. The resistor shouldn't be able to keep the blower motor running with the engine turned off. Of course, if you are referring to the radiator fans, it's not uncommon for them to continue to turn after the car is shut off (on some cars). - Wayne at Pelican Parts  
azbmw Comments: I replaced the final stage unit on my 97 328i but still have problems with no air flow from the ac/heat/fan at all. However, when i go over a large bump or the passenger door is shut the air starts blowing immediately. any ideas?
August 13, 2010
  Followup from the Pelican Staff: I'm not sure, but maybe the flapper valves inside your HVAC system are stuck or broken? Also, the electronic control units on these cars had some problems too - it may be just that bumping the control unit is causing an electrical connection to unite with the board. - Wayne at Pelican Parts  
Daddyo8 Comments: Don says-Comments: Mine will not blow but on low? Any ideas?
I have a e39 and just changed out my blower motor final stage unit and the blower blows only low and the unit gets quite hot, just like the one I replaced. Does the e39 have a resistor as well? sounds like a short... OMG!!!...I hate those things.
August 8, 2010
  Followup from the Pelican Staff: What you're describing does sound like a blower resistor problem - I believe that the E39s have one too. - Wayne at Pelican Parts  
dot Comments: Is it necessary to disconnect the battery to replace this part?
August 7, 2010
  Followup from the Pelican Staff: It shouldn't be, but I typically recommend that you disconnect hte battery when working on just about any part of the car's electrical system. - Wayne at Pelican Parts  
aleman Comments: Love the website. Many useful write-ups.

Another guy above has the same problem as I am having: we replaced our resistor pack as it was only blowing on high, and a month later it failed in the same way. I don't want to keep spending money on this part, so I need to address the underlying problem. Could it be a bad ground? Could it be overheating as another comment mentioned above? Any insight would be great.

Cheers,
Alex
July 29, 2010
  Followup from the Pelican Staff: Hmm, the only thing I can really think of would be if the blower motor is sticking or getting old and stuck, and drawing more current that it should be because it's not spinning as well. The back EMF from the motor will help to counter the current draw and prevent the motor from burning out. In this case, the motor may be sticking and burning out the resistor. Just a guess off the top of my head... - Wayne at Pelican Parts  
97M3 Comments: Im quite unclear on this. So car with Auto AC have both the Blower Resistor and Final Stage? My blower wont work at any fan setting. Which one i need to replace? Thanks
July 11, 2010
  Followup from the Pelican Staff: I would pull the blower motor and apply 12 volts to it to test to see if the actual unit is still good or not. - Wayne at Pelican Parts  
Bigandspeckie Comments: My blower stopped working on my 2003 325. The a/c was showing working on the dash but no air was coming out. I live in Houston and it has been near 100degrees all week. I drove it home 3 miles, replaced a 5a blown fuse and now the car wont start!? All electrics are coming on and it seems the starter is cranking but engine won't turn. Help please. I just had a radiator replaced 3 weeks ago - $1200 - could do without extra cost.
July 10, 2010
  Followup from the Pelican Staff: 5 amp is very low, and is typically only used for side marker lamps and such. Sounds like someone put the wrong size fuse into your blower motor slot. The only thing I can think of is that you bumped something in the fuse panel - remove all the fuses and try reseating them, or check each one to make sure they are good. - Wayne at Pelican Parts  
Tony Comments: I have a 96 328i with a digital climate control. My ac nor heat no longer works. I checked all the fuses and all of them looked good. I have been reading online of possible problems and i think it may be the final stage unit but i am not sure. The digital climate control appears to be fine and the blower has not been making any weird noises.Any idea of what it might be?
July 8, 2010
  Followup from the Pelican Staff: There is a capacitor in this unit that blows up, and renders it inoperable. I think we have a tech article on this somewhere, or there's one on the Internet. - Wayne at Pelican Parts  
D Comments: Is this part different than the triangular "Final Stage Unit" with twelve long protruding heat sinks? I can't seem to locate the "blower resistor" part depicted in this article.
June 17, 2010
  Followup from the Pelican Staff: The blower resistor is different, and it is used to slow down the blower motor to run at different speeds. - Wayne at Pelican Parts  
sean Comments: is this resistor under the drivers steering wheel on a right hand driveUK bmw
May 28, 2010
  Followup from the Pelican Staff: I'm not sure where it is on the right-hand drive cars, but it's pretty big for a resistor, and I believe there is only one on the car. So if it looks like it, it should be correct. - Wayne at Pelican Parts  
sean Comments: Where is this resistor on a right hand drive BMW 316i 1994??
May 28, 2010
  Followup from the Pelican Staff: It is located in the right side of the heater box. You should not have to remove the glove box to access it.- Nick at Pelican Parts  
direwolf Comments: I replaced mine, but it runs warm to the touch. Is that normal? And I hear a clicking sound when it runs, but that isnt from the resistor, its from behind the dash somewhere.
April 5, 2010
  Followup from the Pelican Staff: The resistor pack is a load on the circuit, it will feel warm. The clicking is likely a heater box flap or debris in the blower motor area. - Nick at Pelican Parts  
iRocco Comments: I can't seem to locate this. Do you need to remove the knee bolster? Also, Haynes manual says its behind the glove box. I undid all those screws and can't get the glovebox out. Any assistance would be appreciated, including a picture of the location of the resister housing. The one you have posted is too up close and doesn't give sufficient perspective on the surroundings.
March 26, 2010
  Followup from the Pelican Staff: Follow the steps in the tech article. The article will get you to the resistor. - Nick at Pelican Parts  
Michael Comments: I had this problem and recently replaced my resistor pack but within a week it the problem resurfaced and I'm worried that I may have major electrical issues. Any ideas on what could be causing this repeated shorting?
March 16, 2010
  Followup from the Pelican Staff: Your blower motor could be shorting the resistor pack out. I would start there as it is the only output for that circuit. - Nick at Pelican Parts  
randumbmw Comments: I have a '94 325i and the heat works on 1, 3, and 4, but 2 just blows the same speed as 1. Do you think this is the blower resistor?
January 12, 2010
  Followup from the Pelican Staff: It could be the resistor or the control. Best thing to do monitor the signal from the switch tot he resistor, when you switch speeds, voltage should change. If it does, replace the resistor. - Nick at Pelican Parts  
cwhiteboy Comments: For Future Reference, here is a link to checking the resistor on an E30, for those needing it.

If your ventilation only works in the high (4) position, here's the fix:

At the engine compartment, along the firewall, on the top, there's a rubber (?) cover that goes almost from side to side, that you'll have to take off, to gain access to the blower motor (4 6 mm bolts, 2 on each side). For easier access, take of the 2 plastic nuts, on the right, that hold some electrical wires together.
With the cover out, you'll see another (!) cover, round, held by two plastic straps. Loose them, and take off the round cover. (It's a bit tricky to take it off. It's only the top part, where the straps rest. Be carefull not to brake it).

Having removed this second cover, you'll see the blower motor. On its middle, at the bottom, look for a small brown plastic board with two "arms", one on each side, pointing down, and three resistors, (they look like springs). This board its held in place by its electrical connector, at the back. Just pull it in your direction.
This board is probably VERY dirty - mine was! Clean it thoroughly (the contacts on its back, the thermal switch on the middle, the resistors, everything!) with electrical contact cleaner, or WD40, and test it (Be carefull with the fan!) If it doesn't work, clean it again (I had to clean it twice), especially the thermal switch, below the three resistors.

If the cleaning doesn't help, one - or more - resistors, or the thermal switch are faulty. Test the resistors, using an Ohmmeter. The values are:


1.6 Ohm
.9 Ohm
.35 Ohm
If you find any of them faulty, replace the board.




Gustavo Melo
December 18, 2009
  Followup from the Pelican Staff: Thanks for the additional information - Nick at Pelican Parts  
anon Comments: I have a 97 E36 M3 with the digital climate control. I'm in the process of replacing my final stage resistor pack........and was wondering, does my car also have the blower resistor pack that you have shown above?
December 5, 2009
  Followup from the Pelican Staff: I'm pretty sure that yes, your 97 should have the resistor blower pack. This is used to regulate the speed of the blower motor. If you don't have a problem with that, I wouldn't worry about replacing it. - Wayne at Pelican Parts  
Don Comments: Mine will not blow but on low? Any ideas
November 17, 2009
  Followup from the Pelican Staff: Check your blower resistor. If it only blows at one speed you may need to replace it. - Nick at Pelican Parts  
djbmw Comments: So for anyone with an OBDI E36 heater controls are the dial types,.. you can REPAIR your resistor pack! The pack has a Thermal Fuse at the very end of it that will blow open if the unit overheats at 240 degrees Celcius. This is why most of them fail. The fuse is: pat microtemp 4468a ckacn 240 degree celcius and costs no more then $2.

WARNING: if you try to solder this fuse understand that it will open at 240 degrees celcius,.. so use cold solder paste or watch your iron temperature use heat sinks when soldering.

** To test that the thermal fuse is the culprit, just jump/bypass the thermal fuse with a paperclip/wire and hook it up for a few seconds.
September 22, 2009
  Followup from the Pelican Staff: Thanks for the additional information. - Nick at Pelican Parts  
whm Comments: Is the same procedure applies on E30 1990 model ?
July 17, 2009
  Followup from the Pelican Staff: I believe it's very similar. - Wayne at Pelican Parts  
Ajoy Comments: Thanks for great information.

Ajoy
july 4,2009
July 4, 2009
  Followup from the Pelican Staff: Thanks for the feedback. - Nick at Pelican Parts  

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