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Radio, IHKA Panel and Seat Heat Controls Replacement
 
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Pelican Technical Article:

Radio, IHKA Panel and Seat Heat Controls Replacement

Nick Czerula

Time:

2 hours2 hrs

Tab:

$300

Talent:

****

Tools:

Flathead screwdriver, radio tool set, wire crimpers, wire strippers, plastic trim panel tool

Applicable Models:

BMW 525i/xi Sedan (2004-07)
BMW 528i xDrive Sedan (2009-10)
BMW 528i/xi Sedan (2008-10)
BMW 530i/xi Sedan (2004-07)
BMW 530xi Wagon (2006-07)
BMW 535i xDrive Sedan/Wagon (2009-10)
BMW 535i/xi Sedan (2008-10)
BMW 535xi Wagon (2008)
BMW 545i Sedan (2004-05)
BMW 550i Sedan (2006-10)
BMW M5 Sedan (2006-10)

Parts Required:

Radio, wiring harness adapter, antenna adapter, IHKA panel, seat heat controls

Hot Tip:

Disconnect battery before removing radio

Performance Gain:

Repair faulty radio

Complementary Modification:

Install aftermarket radio

Most electrical components on BMW E60 models require programming using an advanced BMW scan tool when replacing. With that said, don't feel you can't replace these items yourself. You also have the option of swapping out used items, which will at times work with programming. I don't have experience with this method, due to my access to a BMW scan tool, but it is something to consider. I have been told programming of used items isn't always required, so this may be an option, but I cannot vouch for it working 100% of the time. If you have experience with used part installation, please share your experience as it will help the Pelican Parts community.

The IHKA or climate control panel is located in the center dashboard. This is the control for your heating and ventilation system. The most common portion of this control to fail is the blower motor control. It may seem as if the blower resistor is faulty, but replacing it doesn't remedy the issue. This may be a faulty blower control. You will want to check the signal to the blower resistor at this point and confirm the signal is faulty. Other functions of this control can also fail over time, however aren't as common.

The radio is located in the center of the dashboard. There are a few different radio options that came in BMW E60 models. Try to identify your options before purchasing replacement parts. For example, my subject vehicle could have: Radio with HIFI, Radio with Stereo and Radio with TOP HIFI. If you have a problem with your radio, you can swap it out using the instructions below. If you want to install an aftermarket radio, use these instructions to remove your radio. Then install a wiring harness adapter to the factory connector and install the aftermarket radio. I suggest always using a wiring harness adapter and avoid cutting any wires on the factory harness. This way if you want to reinstall the factory radio, it will plug in and work as it did when new. Always check the radio fuse before replacing the radio, including the fuse at the back of the radio. See step 12 for the fuse location.

The seat heat control buttons are in a combined control panel with the DSC (dynamic stability control) button. The failure mode of these buttons is quite simple. You will press the button to activate your seat heat, and the LEDs will not illuminate as they have in the past. This may also be due to a break in the circuit further down the line, like in the seat heater itself. Be prepared to check fault codes before pulling the trigger on replacing the control panel. Most of the time, I find the control panel is at fault.

Remember that your car may have been serviced before and had parts replaced with different size fasteners used in the replacement. The sizes of the nuts and bolts we give may be different from what you have so be prepared with different size sockets and wrenches.

Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. If you're working with the electrical system, disconnect the battery before beginning. Always catch fluids in appropriate containers and properly dispose of any fluid waste. Recycle parts, packaging and fluids when possible. Never work on your vehicle if you feel the task is beyond your ability.

Our vehicle may vary slightly from yours as models do change and evolve, as they grow older. If something seems different, let us know and share your info to help other users. Do you have questions or want to add to the article? Leave a comment below. When leaving a comment, please leave your vehicle information.

When replacing these components, you have to remove the center dashboard trim. I will start with that procedure, then each component will follow.

Remove the hazard/door lock switch (red arrow).
Figure 1

Remove the hazard/door lock switch (red arrow). See our tech article on headlight/hazard switch replacing. 

Next, remove the center dashboard trim (red arrow).
Figure 2

Next, remove the center dashboard trim (red arrow). Begin by levering at the right side using a plastic prying tool (blue arrow). Then work your way to the left detaching the retaining studs (green arrows). Once detached, remove the trim from the vehicle.

Slide an eight-inch flathead screwdriver (blue arrow) behind the side of the IHKA control trim panel.
Figure 3

Slide an eight-inch flathead screwdriver (blue arrow) behind the side of the IHKA control trim panel. Then lever the panel toward the rear of the vehicle, detaching all four trim panel clips (red arrows). Then slide the trim panel away from the dashboard to expose the IHKA electrical connectors.

Next, disconnect the electrical connectors.
Figure 4

Next, disconnect the electrical connectors. Squeeze the release tabs on the left side connector to disconnect it (blue arrow). Then press the small button and rotate the connector lock 90 degrees to disconnect them (red arrows).

IHKA panel: Place the panel on a blanket or towel to protect it.
Figure 5

IHKA panel: Place the panel on a blanket or towel to protect it. Then using a flathead screwdriver, release the four retaining tabs (red arrows). Lever the trim panel away from the IHKA controls to release it.

IHKA panel: Pull the IHKA control panel away from the trim panel as you detach the trim clips.
Figure 6

IHKA panel: Pull the IHKA control panel away from the trim panel as you detach the trim clips. When releasing the clips, roll the panel down toward the bottom of the trim panel to detach the lower clips.

Radio: Working at the radio, remove the two Phillips head screws (red arrows).
Figure 7

Radio: Working at the radio, remove the two Phillips head screws (red arrows).

Radio: Slide the radio out of the dashboard to access the electrical connectors.
Figure 8

Radio: Slide the radio out of the dashboard to access the electrical connectors.

Radio: Remove the control cable (red arrow) from the radio by pulling it straight out of the radio.
Figure 9

Radio: Remove the control cable (red arrow) from the radio by pulling it straight out of the radio. If needed, gently lever on it using a small flathead screwdriver. At this point, place a carpet or protective sheet on top of the center console to protect it from being scratched.

Radio: Then pull the antenna connection (red arrow) straight off the radio to disconnect it.
Figure 10

Radio: Then pull the antenna connection (red arrow) straight off the radio to disconnect it. Note the protective sheet I have on the center console (blue arrow).

Radio: Press the release tab (red arrow).
Figure 11

Radio: Press the release tab (red arrow). Then slide the large black connector in the direction of the blue arrow to disconnect it.

Radio: You now have access to the 15 amp fuse (red arrow) at the back of the radio.
Figure 12

Radio: You now have access to the 15 amp fuse (red arrow) at the back of the radio. Check that it is in good shape before replacing the radio. This fuse could be your only issue if the radio does not function.

Seat Heat controls: Start by sliding the seat heat controls out of the dashboard far enough to access the electrical connectors.
Figure 13

Seat Heat controls: Start by sliding the seat heat controls out of the dashboard far enough to access the electrical connectors.

Seat Heat controls: Pull the left connector (green arrow) straight out to remove it.
Figure 14

Seat Heat controls: Pull the left connector (green arrow) straight out to remove it. For the center connector, press the small button and rotate the connector lock 90 degrees to disconnect it (blue arrow). Squeeze the release tabs on the right side connector to disconnect it (red arrow). Reverse the steps to reinstall everything. Be sure that the center dashboard trim panel clips are in good condition before installing. Replace any damaged trim panel clips.

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Comments and Suggestions:
Larry Ludgyus Comments: Replaced emergency brake handle. IKHA panel and center console were removed. Orderly reassembly. Have lost control of heater flaps. Car was started and moved over several days while dis-assembly and reassembly was done. Do I have to code the IKHA as if it were new to the car?
December 1, 2016
Karol Comments: Hi. I have same problem with my A/C after replaced that panel.I changed my half leather to full leather and I was trying to connect heater seats but its not only plug a play. When I connected everything my A/C and heater rear wind screen stop to work. What should I do?
June 14, 2016
  Followup from the Pelican Staff: You may have connected an incompatible wiring harness. Check fuses and for fault codes to see if something was shorted. - Nick at Pelican Parts  

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Page last updated: Sat 12/3/2016 02:39:32 AM