Parts Catalog Accessories Catalog Tech Info Tech Forums
 
Follow Pelican Parts on Facebook Follow Pelican Parts on Twitter Follow Pelican Parts on Instagram Follow Pelican Parts on YouTube Follow Pelican Parts on Pinterest Follow Pelican Parts on Tumblr
  Search our site:    
View Recent Cars  |   Cart  | Project List | Order Status | Help    
 >  >
IHKA Panel (Heater Controls) Replacement
 
Bookmark and Share

Pelican Technical Article:

IHKA Panel (Heater Controls) Replacement

Nick Czerula

Time:

2 hours2 hrs

Tab:

$300

Talent:

****

Tools:

Phillips screwdriver, plastic trim panel tool

Applicable Models:

Z4 M54 (2003-05)
Z4M S54 (2006-06)
Z4 N52 (2006-06)
M3 (N/A-A)

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 Z4 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 not as common.

The seat heat control buttons are in a combined control panel with the DSC (dynamic stability control) button, convertible top and tire pressure monitoring system. The failure mode of these buttons is quite simple to tell. 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. To replace this panel, see our tech article on center console replacing.

Remember your car may have been serviced before and 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 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. Questions or want to add to the article? Leave a comment below. When leaving a comment, please leave your vehicle information.

The IHKA or climate control panel (red arrow) is located in the center dashboard.
Figure 1

The IHKA or climate control panel (red arrow) 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 not as common.

Start by removing the radio.
Figure 2

Start by removing the radio. See our tech article on radio removing.

Next, working below the IHKA panel, lever out the plastic trim panel (red arrow).
Figure 3

Next, working below the IHKA panel, lever out the plastic trim panel (red arrow).

Fold the panel (red arrow) down and unhook the catches, remove it from the instrument panel.
Figure 4

Fold the panel (red arrow) down and unhook the catches, remove it from the instrument panel.

Working through the radio opening, remove the two Phillips head screws (red arrows).
Figure 5

Working through the radio opening, remove the two Phillips head screws (red arrows).

Next is the most challenging part of the process: detaching the catches at the sides of the panel.
Figure 6

Next is the most challenging part of the process: detaching the catches at the sides of the panel. These photos shows the unit removed for clarity. The instrument panel has a catch that has to be levered away from the panel to free it. The blue arrow points to the right side catch, left side is similar. The red arrow points to the clip on the panel that rests in the catch when installed.

Working through the lower plastic panel opening, use a small pick (red arrow) and lever the catches away from the panel.
Figure 7

Working through the lower plastic panel opening, use a small pick (red arrow) and lever the catches away from the panel.

Press the panel into the instrument panel about 1/2 inch on each side (red arrows) before trying to remove it.
Figure 8

Press the panel into the instrument panel about 1/2 inch on each side (red arrows) before trying to remove it. This is also tricky to do, as the panel doesn't like to come out at an angle, so you have to detach it evenly on each side as you push it out.

Pull the panel out of the opening at the bottom of the instrument panel.
Figure 9

Pull the panel out of the opening at the bottom of the instrument panel. Next, disconnect the electrical connectors. Press the small button (blue arrow) and rotate the connector locks 90 degrees to disconnect them (red arrows). Remove the IHKA panel from the vehicle.

If you are having an issue with incorrect interior temps, check that the interior temp sensor intake (red arrow) and exhaust (blue arrow) is not plugged.
Figure 10

If you are having an issue with incorrect interior temps, check that the interior temp sensor intake (red arrow) and exhaust (blue arrow) is not plugged. These frequently get plugged with dust and dirt. Clearing them and cleaning it out can restore function.

To replace the plastic trim pieces for the IHKA panel, unhook the catches (red arrows) and pull the trim pieces out of the instrument panel.
Figure 11

To replace the plastic trim pieces for the IHKA panel, unhook the catches (red arrows) and pull the trim pieces out of the instrument panel.


Bookmark and Share

  Search our site:    

View Cart & CheckOut | Project List | Order Status |  Help    

 

[Home] [Customer Service] [Shopping Cart] [Privacy Statement]
 [Contact Us] [About Us] [Shipping] [Map to our Location] [Careers]

Copyright © Pelican Parts Inc.

Page last updated: Sat 12/3/2016 03:10:39 AM