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Replacing Your Window Regulator and Motor on the Porsche 911 Carrera
 
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Pelican Technical Article:

Replacing Your Window Regulator and Motor on the Porsche 911 Carrera

Time:

1 hour1 hr

Tab:

$235

Talent:

***

Tools:

Torx driver set

Applicable Models:

Porsche 996 Carrera models (1999-05)
Porsche 996 Turbo, GT2, GT3 (2001-05)
Porsche 997 Carrera models (2005-12)
Porsche 997 Turbo, GT2, GT3 (2007-13)

Parts Required:

New window regulator and motor

Hot Tip:

Clean the window and regulator channels carefully prior to the reinstallation

Performance Gain:

Smooth, reliable window operation

Complementary Modification:

Replace lock assembly, mirror switch

Have you gotten tired of having to open your door and get out to retrieve your burger at the drive thru window? Is your roof stuck up because the window is broken and the car won't let you open the roof without the window rolling down? Perhaps it's time to replace or clean your window regulator or install a new power window motor. Nothing's better than driving in your 911 Carrera with the windows down on a nice sunny day. Having a broken window regulator can surely put a damper on that.

The first step in replacing either the regulator or the power window motor is to remove the door panel (see Pelican Technical Article: Porsche 911 Carrera Door Panel Removal). Make sure that you eliminate the power window switch as a potential problem before you start tearing into your door. Double-check all the fuses that control the power windows, and swap out the relays to make sure that there isn't a problem with them. If one of the windows works and the other doesn't, then chances are that it's the window motor or the window switch. The switches themselves are often faulty, which can sometimes make this an easy fix. On the 996, test the switch by removing it from the center console, and swap it with one that is working. On the 997 the door panel has to come off to test the switch. If there is any noise coming from the door (clicks and whines) and the window isn't moving, then it's quite obvious that the motor is fine, but the regulator needs to be repaired. If your window is not dropping down when you pull open the door handle, then you probably have an issue with the electrical switch that is integrated into the handle itself. See Project 78 for more details on replacing the handle and that switch.

For details on removing the door panel, see Pelican Technical Article: Porsche 911 Carrera Door Panel Removal. On the 996, when you have the door panel removed, you can view the regulator. The 997 have an inner panel so you will have to watch the actual window. With your fingers clearly out of the way, roll down the window until it's about 75 percent of the way down. Observe what is happening--the goal here is to figure out if the motor or the regulator needs replacing. If there is no movement, then the motor is suspect. If the motor moves or clicks, then your regulator probably needs to be replaced. Remove the motor and then the regulator.

With the regulator detached from the door frame and the window, you should test the motor. With your hands out of the way of the motor, carefully press lightly on the window switch and see if the motor moves properly. If the motor doesn't move at all, then it probably is worn out, assuming that you've checked the window switch (check the voltage to the motor when you press the window switch to see if it's getting 12V).

Before you reinstall the window, I recommend that you inspect and replace the front window channel guide if it's worn. This is the channel that guides the front of the window as it is raised and lowered by the regulator. Also worth replacing are the window slot seals if they are worn out. These inner and outer "window scrapers" keep water from dripping down into the recesses of the door. You should also grease all of the moving parts of the regulator: the slides, the motor, the gears, etc.

Before you close everything up inside your door, it's a wise idea to test the proper operation of the window. With your fingers clearly out of the way, hook up the power connections to the window motor, and try to raise and lower the window. Also verify and adjust the stop positions of the window once you have reinstalled the regulator (see Figure 6). There are screws located on the regulator that control these stop positions. If the power is disconnected from the car, the power windows lose their reference point for the closed position and need to be re-initialized. With the convertible top fully closed, press the up button on each window and then continue pressing down for about five more seconds. On the 997 you need to hold the switch in both the up and down position twice to reinitialize the system.

For the 996

The first step in checking the proper operation of your window is to verify that the window switches are working.
Figure 1

The first step in checking the proper operation of your window is to verify that the window switches are working. Remove the two screws in the coin tray (inset), and then pull out the assembly. If one window works and the other does not, try swapping the switches with each other. Replacement is easy, they snap out the back (in the direction of the green arrow) after releasing the tab inside with a small screwdriver.

Here's a photo of a brand new regulator.
Figure 2

Here's a photo of a brand new regulator. Compared to the "old days," modern window regulators are an advanced design, incorporating the cables, gears, and rails into a single assembly. The blue arrow shows where the motor bolts to the regulator. The white arrow points to where the lower edge of the window mounts to the regulator. The orange arrows show the adjustment/tightening screws for the window clamps. The purple arrow shows the height adjustment points for the window (see Figure 6).

Shown here is the procedure for window removal.
Figure 3

Shown here is the procedure for window removal. Raise the window all the way up and stick a screwdriver in the door latch mechanism to trick the car into thinking the door is fully closed. This will keep the window in the top elevated position (see Frame A of Figure 6). Pry off the rubber plugs that cover the access holes (green arrow). Loosen but do not remove the two window clamping screws (yellow arrow). Finally, pull the window up out of the door (purple arrow).

Removal of the window motor is fairly easy.
Figure 4

Removal of the window motor is fairly easy. Disconnect the electrical harness connection (blue arrow). Then remove the three nuts that hold the motor to the door. Push the motor into the door and pull it down so that you can access the studs that you just took the nuts off of. Remove the three studs (purple arrow shows one of them)--they are what hold the motor and the regulator together. Finally, pull the motor off of the regulator (inset photo, upper left).

With the motor disconnected and detached, removal of the regulator is a snap.
Figure 5

With the motor disconnected and detached, removal of the regulator is a snap. Disconnect the four mounting points for the regulator (green arrow) and it should slide out of the lower part of the door. On the very bottom surface of the door, you need to remove the two inner door plugs to reveal the mounting nuts (orange arrow).

Window adjustment can be a bit tricky.
Figure 6

Window adjustment can be a bit tricky. A: Trick the door into thinking it's closed by putting a short screwdriver into the lock mechanism. The window should raise about 12mm. B: With the roof up, push the door near to being closed and measure the distance that the top of the window is located above the bottom edge of the seal. This should be about 2mm or so. C: Make sure that the glass is aligned properly left to right in the holding clamps. The edge/corner of the glass should be aligned with the edge of the aluminum clamp (purple arrow). To align the left-right angle of the window, use the slot indicated by the green arrow (only the rear slot is adjustable). D: Check the distance that the window sits into the seal by using small pieces of Post-It notes affixed to the window. Open the door and measure the distance from the top of the Post-It notes to the top of the window. This should be about 4mm. E: Adjust the window height by removing the outer plugs in the bottom of the door and using an E6 Torx socket to turn the stopper (counterclockwise = higher window). F: Check the window rake angle by placing a sheet of paper in the window and rolling it up. You should not be able to remove the paper. Adjust the rake angle by moving the position of the two lower mounting studs for the regulator, in the slots in the door (remove the inner lower door plugs to access these). For the 997

To remove or replace the window switches you will need to remove the door panel.
Figure 7

To remove or replace the window switches you will need to remove the door panel. (see Pelican Technical Article: Porsche 911 Carrera Door Panel Removal). Once the panel is off, you can remove the window switch by first disconnecting the wiring. Squeeze the tap (red arrow) and pull straight back. The switch is held in place by a locking tab (green arrow) gently pry it down and slip the switch out.

The 997 doors are a modular design that incorporate an inner aluminum panel within the door frame.
Figure 8

The 997 doors are a modular design that incorporate an inner aluminum panel within the door frame. This panel works as the moister barrier and has allowed Porsche to house all of the doors electronics in what is known as "the dry zone". Please see project 76 for more information. Once the door panel is off you will see the window motor (red arrow), door control module (yellow arrow). Unplug the wires leading into the control module and remove the three screws (green arrows) holding the module to the window regulator and inner panel. The motor, gear drive and control module will come of as a complete unit.

The insert lower left shows the complete control module as well as the motor and gear to the regulator.
Figure 9

The insert lower left shows the complete control module as well as the motor and gear to the regulator. MainPicture shows the mounting points (yellow arrows) to the window regulator behind the dry zone panel. Remove the screws holding the panel on and carefully pass the wiring harness through the panel.

Here is the door with the panel off.
Figure 10

Here is the door with the panel off. To replace the window regulator you will need to remove the window. Slide the window all the way to the top and loosen but do not remove the screws holding the window in place, via the access holes in the door (green arrows). Once the window is out, reach in and unclip the harness running along the very top inside of the door between the green arrows. Remove the nuts securing the upper part of the regulator (blue arrows). Next, pull of the rubber plugs on the bottom of the door (purple arrows) and unfasten the nuts holding the lower mount (you will need to remove the access plugs in the lower door frame). Squeeze the regulator together and carefully remove from the door. Installation is the opposite of removal. When installing the lower limit stop, there are three bore holes one above the other in the front rail, make sure you it is fitted in the bottom bore.

Shown here is the mechanism that joins the motor to the regulator.
Figure 11

Shown here is the mechanism that joins the motor to the regulator. The inner door panel helps hold everything in place. Insert shows the adjustments available in the mount. Yellow arrow is the bottom height adjustment, blue arrow used for fine tuning the up/down, side to side as well as clamping the window to the regulator. Do not over tighten this nor undo it completely. Please seePicture 6 for adjusting the window. On the 997s, after installation you must raise and lower the window and double push the switch in both positions. Due to all of the electronics now contained in the door module, do not be surprised if you need to have the door systems reprogrammed with the PIWIS

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Comments and Suggestions:
dc Comments: hi,

i have a 2008 911 carrera.

when i pull on the inside or outside driver's door handle, my window will drop down 1/4", but as soon as i release the handle, the window will immediately go back up. This causes my door to close incorrectly. The top edge of the glass hits the outside of the window seal instead of the inside. on my other door, the window will drop down 1/4" and stay that way until my door is closed and then it will go back up. can you tell me which part i need to replace?

thanks,

dc
October 23, 2016
  Followup from the Pelican Staff: Try to clean the door latch. The switch init is either dirty or worn out. - Nick at Pelican Parts  
Bill Comments: My drop down on the window, when opening and closing doesn't work or drops down about 2 inches. I've bought from Pelican the 2 switches that control the drop down. Do I need to disconnect the battery to do all of the work and then will I need to reprogram the window settings?
August 18, 2016
  Followup from the Pelican Staff: I would disconnect the battery. You will need to initialize the windows when done. - Nick at Pelican Parts  
Ging13 Comments: My 997 cab rear window won't go down is it a big job?iwhat is the cost?
April 10, 2016
  Followup from the Pelican Staff: It is a few hours job plus the part.

I am not sure what the repair will cost in your area. Call a few shops and ask for a quote. It is also a good idea to have them confirm what the issue is.
- Nick at Pelican Parts
 
SpeedJunkie Comments: My 1999 996 Cabriolet passenger window only drops a few inches then stops whenever the cabriolet top is lowered by any method. It then raises the 2" normally when the top goes back up. The passenger window up/down/stop function works perfectly otherwise. I recently changed the regulator and motor. Any diagnostic solutions greatly appreciated! Thnx
December 23, 2015
  Followup from the Pelican Staff: I would start by trying to initialize the windows. If that doesn't work, the regulator may be faulty. - Nick at Pelican Parts  
nydefense Comments: Casey: followup on my window regulator install, I bought both sides of the uro regulators. Installed the left. my problem was window works fine but didn't drop all the way. You said there are 2 stoppers riveted to the slide. If I'm looking at the right thing the uro has 2 stoppers but they are torx screws holding them. Is that what I have to remove, the top one? Thanks you guys rock, have saved me a bunch of cash and headaches. thanks again
December 10, 2015
  Followup from the Pelican Staff: The stops is mounted toward the bottom of the regulator. On 996 models, the limiter should be in the lowest notch. There are photos of this in repair manuals.
I would grab a repair manual. It will have the procedure, special tools and torque specs.

Give our parts specialists a call at 1-888-280-7799. - Nick at Pelican Parts
 
Ben Comments: Hi Nick

I have a 1999 Porsche 911 996 Carrera Cabriolet. The drivers side door window goes up and down ok, no noise no trouble. However the one touch automatic window raise using the centre switch only works when lowering the window. It will not work when I try to raise the window using the switch. I have tested the switch by switching it with the passenger door window it works just fine.

Any Suggestions would be greatly appreciated.
Many Thanks
Ben
October 10, 2015
  Followup from the Pelican Staff: Try to adapt the window limits. If that doesn't do it, there may be an issue with the regulator. - Nick at Pelican Parts  
Rob Comments: Nick: Thanks for the reply and follow-up question. When I pull the door handle, the motor runs briefly and the window shudders, but does not move down. I cannot move the window by hand. When I used the up/down button on the center console, the window works normally - regular speed and full travel. So, I have resorted to opening the window from the console, opening the door, closing the door and then running the window back up from the console. It is odd, because it sounds like the motor is trying to move the window, but just doesn't. I don't understand the mechanism and switch logic well enough to understand why the short drop does not work and the rest of the window function appears normal. Thanks for your help
September 22, 2015
  Followup from the Pelican Staff: If the problem persists when opening from the inside and outside door handle, the problem n=must be in the regulator. If just one, there may be a faulty signal from one of the handle switches. - Nick at Pelican Parts  
Rob Comments: Hi: I have a 2001 996TT. The passenger window works when I use the console switch, but when I pull on the door handle, the motor runs and the window "twitches" but does not go down. Before I tear into this, I was hoping your could help me diagnose where to look first. I think I can fix it myself, but wanted some clues before I got going. Again...door handle turns motor on, but window does not drop to allow opening. Center console switch moves window up and down, no problem. Thanks
September 7, 2015
  Followup from the Pelican Staff: Sounds like a faulty regulator. With the door open, can you raise and lower the glass by pulling on it? - Nick at Pelican Parts  
Mach1 Comments: I have a window that does not drop properly when you open/close the door. I does move, only it is a forward/backward movement instead of up and down. Is there an adjustment for this? Or is the regulator loose? Or is this how they wear and the regulator now needs to be replaced?
August 10, 2015
  Followup from the Pelican Staff: Could be the door handle switch or a faulty regulator. If the window can be pushed up and down, the regulator may be faulty. - Nick at Pelican Parts  
aceshooter1 Comments: Thanks to website Pelican is really helpful with end-user tips. I replaced 2006 997 right window regulator without difficulty using info from this site. Can only add that you must adjust the window stop located on the forward riser rail for car model BEFORE installing any replacement to the 4 point screw and bolt fixation points. Also, make adjustments to the window set screws similar to what the OEM part looks like regardless if after-market replacement is used. Check out the opposite window fit, door handle lift action on window and fully closed window to get better feel of how the window clamps should initially be set. I did not make any fine adjustments afterwards through door bottom adjustment sites. Finally, just disconnect/re-connect airbag electrical-No FEAR. Get at least one package replacement door panel push tabs for breakage during panel removal, and ALL 9 tabs should be located on door panel before replacement, not on 997 dry zone panel. If replacing door woofer, no speaker dry zone so Crutchfield may have backing to protect new speaker from any moisture.
May 27, 2015
  Followup from the Pelican Staff: Very good input, and excellent advice on getting replacement clips. That will make the job much less stressful. - Casey at Pelican Parts  
nydefense Comments: Disregard the airbag plug. I worked around it. Job is done fairly simple job. realignment is probly biggest pain. I still need some help on the pins on the regulator. I have 4 pins/clips that I don't know how they are to be set. I have 2 pushed in and 2 out. window doesn't go all the way down. all but about 1 1/4" at highest point not going down. I figure it's a pin either way. Can't tell from old regulator. Any experience on this??
April 13, 2015
  Followup from the Pelican Staff: I've had this happen a few times in the past. The regulators had an extra stop riveted on to the regulator slide track, and I had to remove the upper one for it to lower all the way down. To verify this is the case run the window up, then while looking at the tracks see if the regulator slide contacts a little plastic and rubber stopper before it is all the way down... If so you must remove this stopper. If there is another one riveted on to the track down lower you're finished. If not, you'll need to rivet the stop you removed on to the lower indentation. - Casey at Pelican Parts  
nydefense Comments: replacing the driver side window regulator on my 01 996 carrera cabrio. Don't want to break it so how does the airbag unplug? is there a release tab on it?? Thanks
April 12, 2015
  Followup from the Pelican Staff: if I remember correctly, you separate the purple and yellow portions by pulling it straight apart. - Nick at Pelican Parts  
Sinky UK Comments: Hi guys i
Thanks for replying so quickly. You were exactly right. I did not leave a plug out but I did manage to get things working. Good tip on the main plug going into the window motor from the switch panel. It is very easy to fit the plug slightly wrong positioning. Even with the yellow lever pushed to the up or locking position. The bottom section of the plug may not be fully inserted. That is what I did. Make sure the bottom of the plug is well located before engaging the yellow lever into the up or locking position. All is now working Thanks for your excellent step by step instructions they were invaluable.
January 4, 2015
  Followup from the Pelican Staff: Thanks for the follow up. We appreciate it.
- Nick at Pelican Parts
 
Sinky UK Comments: Hi Guys. Great detailed step by step instructions. I had a problem on my 2006 997 Carrera S. Drivers window froze up and on opening burst the window membrane. Replaced all parts with your great guidance but on re connecting the battery I find nothing on the drivers door works. I have an air bag warning light on the dash and what seems to be no power to any function on the door. No window action, no door light, no seat memory, no door mirror adjustment. Do I need to re set anything after disconnecting the battery? Any advice would be appreciated.
January 2, 2015
  Followup from the Pelican Staff: Sounds like something was left unplugged. I would check the electrical connectors. - Nick at Pelican Parts  
treetopdaddy Comments: Oops...I meant the BENTLEY manual. Thank you, by the way, for your quick response.
September 11, 2014
  Followup from the Pelican Staff: Got it, thanks. - Nick at Pelican Parts  
treetopdaddy Comments: Actually, I have the Bentely manual but, strangely, it is completely silent on the operation/repair/parts for the rear quarter windows. A new glass regulator is available from your shop $750!!!, but there are no detailed instructions on removal and replacement. Guess I'll have to wing it....
September 11, 2014
  Followup from the Pelican Staff: Ahh. Ok, if it is not covered there, it would have to com from Porsche. If you go for it, the toughest part, IMO, os removing the body panels. Once off, the regulator is easier to replace than the front window. I hope this helps. - Nick at Pelican Parts  
treetopdaddy Comments: My problem is with the right rear quarter window on my 2002 996 cabriolet. The top has stopped working properly, but one day I hit the switch on the dash just to check it, heard a loud bang from the right rear quarter, and now my right rear quarter triangle window won't operate either with the switch or by pulling/pushing on it. Do you have any idea what could be wrong? Can you provide photos and a description on how to access the mechanism and what might be a proper repair?
Thank you for any advice you can give...I need to be able to drive on rainy days and my quarter window is stuck half open...Thanks again.
September 11, 2014
  Followup from the Pelican Staff: I don't have tech article on that window.
I would grab a repair manual. It will have the procedure, special tools and torque specs.

Give our parts specialists a call at 1-888-280-7799. - Nick at Pelican Parts
 
M.Harris Comments: By the way, what is Project 78? I couldn't find it anywhere.
September 2, 2014
  Followup from the Pelican Staff: Not sure we use the number system right now. They are all ocated here:

http://www.pelicanparts.com/techarticles/996_tech.htm

I will have the article updated. - Nick at Pelican Parts
 
M. Harris Comments: Hello, my name is Michealangelo, and I wasn't clear on the last comment from Roberto. I have the problem that he stated, where the window doesn't go down the 10mm that it's
suppose to, but you can push it down the 10mm while the door is open. I just need to know exactly what the problem is. Is it one of the micro switches, or the window regulator that's the main problem. I have exceptional mech. skills, so I do know automotive repair. Here, I just need to know what the actual problem is that I may fix it/
Thanx!

P.S. I have a 08' 997s, the problem just started approx.2 wks ago.
September 2, 2014
  Followup from the Pelican Staff: I can't be sure without diagnosing myself. However, if it doesn't drop from the inside, suspect the inner door handle microswitch, If it never drops, suspect the regulator. - Nick at Pelican Parts  
Bird Comments: I have a 996tt cab,my windows have stopped working all together
I get a clicking noise from the drivers door, and narrowed it down to a module on the motor, i bypassed the module and the motor works, my question is does this module control all the windows, if it was one window i think maybe, but all the windows dont work at all, the roof is fine, i took it for a diagnostic, and no errors show, any ideas?
June 20, 2014
  Followup from the Pelican Staff: It could be the relay inside the module for that particular window. That would only cause one side to fail. - Nick at Pelican Parts  
Pk Comments: You are 100 % correct. Part when received from Porsche was set to Boxster. Problem now fixed

Thank a million
June 4, 2014
  Followup from the Pelican Staff: Thanks for the follow up. We appreciate it.
- Nick at Pelican Parts
 
Pk Comments: Thank you for your reply

Yes it was a Porsche part supplied by Porsche and I have checked the part number and it's us correct. I didn't see the new part before install. But I have the old one which I will check. Is the lower stop moved to different positions for the Boxster
June 2, 2014
  Followup from the Pelican Staff: If I remember correctly, there is stop that is moved depending on model. I would grab a repair manual. It will have the procedure, special tools and torque specs.

Give our parts specialists a call at 1-888-280-7799.- Nick at Pelican Parts
 
Pk Comments: I had new regulator fitted following some respray work where door handles required removal for painting. After the new regulator was fitted I have only realised that the window will not go down fully. It's about 30mm from fully down. Any pointers it's a 2008 997
June 2, 2014
  Followup from the Pelican Staff: It could have the regulator stop in the wrong position. Did you use a factory regulator? If so, check the part number to be sure it is for your vehicle. You may also want to compare the new and old parts to check if they are the same.- Nick at Pelican Parts  
JW Comments: Hi all,
My RH window regulator is broken, and when i removed it from my '03 996 coupe, I noticed there were about a half dozen steel clips slotted into the mechanism below the point where the motor attaches. They appeared to be at different depths, and in my attempt to get the regulator out, I may have moved some of them.
Can anyone tell me what the clips do, and if they need to be set up, what is the procedure?

Thanks,

John.
February 19, 2014
  Followup from the Pelican Staff: Can you share a photo of the clips and the regulator? - Nick at Pelican Parts  
Patrick Comments: Important note. There are two stops installed on the regulator. You need to remove the upper stop if your working on a 911 since the upper stop is for a Boxter. If you don't the window will not go down all the way. They are on the front side of the regulator.
February 17, 2014
  Followup from the Pelican Staff: Thanks for the input on this one. We appreciate the help.
- Nick at Pelican Parts
 
Roberto Comments: Nick
Thanks for that. The one I put in works OK at present and I realise its a gamble.
April 24, 2013
  Followup from the Pelican Staff: No problem. - Nick at Pelican Parts  
Roberto Comments: I have the same problem. At first I noted the glass was not dropping 10 mm on closing the door, and had to be pushed down a bit to prevent jamming against the rubber seal at the top. Then I started hearing a graunching sound on lowering and raising the glass. This got worse and eventually the glass jammed. On taking it apart the blue plastic sleeve that sits around the cable as it leaves the regulator was broken. In the photo you can see the fat bit of the blue plastic sleeve in position. The thinner portion is meant to sit between the spring and the cable. It has broken off and entered the housing and become jammed between the cable and the wheel. I have ordered a used Reg and will install when it arrives by mail.
April 11, 2013
  Followup from the Pelican Staff: Thanks for the info. I would be careful with used regulators. Usually removed from vehicles as old as the one it is going to be installed in. This means it could have the same problem you are repairing shortly after installing it. - Nick at Pelican Parts  

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