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Trunk Release Button Replacement
 
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Pelican Technical Article:

Trunk Release Button Replacement

Nick Czerula

Time:

1 hour1 hr

Tab:

$200

Talent:

***

Tools:

Trim panel tool, small flathead screwdriver, wire diagonal cutters

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:

Trunk release button

Hot Tip:

Check trunk latch and button operation before closing trunk

Performance Gain:

Repair broken trunk release button or solenoid

Complementary Modification:

Replace trunk latch

The lock release button is a plastic handle with an integrated button behind a soft rubber pad. The electrical portion of the button is pretty tough and tends to work for a long time. The surrounding parts however do not. The rubber button pad and plastic portion of the release button fall apart, making it difficult to open your trunk lid and leaving you with only the lock cylinder to access items inside. To replace the button, you have to remove the trunk carpet trim, to access the wiring. Then remove the button from the exterior. To test the release button, access the wiring at the trunk lid (follow the steps below) and disconnect the electrical connector. Lock the trunk latch using a flathead screwdriver (with the trunk lid open). Then, using a fused jumper wire, jump the two wires together. The latch should open.

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 the fasteners 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.

Start by removing the emergency trunk release handle from the trunk lid (red arrow).
Figure 1

Start by removing the emergency trunk release handle from the trunk lid (red arrow). Then press the plastic tab and remove the cable from the handle (inset).

Then, remove the two Phillips head screws (red arrows) from the tool kit.
Figure 2

Then, remove the two Phillips head screws (red arrows) from the tool kit. Then unlock (green arrow) the tool kit and open the door. Support the door while you detach the door strap from the trunk lid (inset). Using a trim panel tool, lever out the center pin on the plastic rivets (yellow arrows) on the trunk carpet trim.

Then pull the carpet trim (red arrow) down and feed the emergency release cable through the trim (yellow arrow).
Figure 3

Then pull the carpet trim (red arrow) down and feed the emergency release cable through the trim (yellow arrow). Then support the carpet trim while you disconnect the trunk light. Pull the electrical connector (green arrow) straight out to remove it.

Locate the purple electrical connector, in line with the trunk latch (red arrow) toward the top of the trunk lid.
Figure 4

Locate the purple electrical connector, in line with the trunk latch (red arrow) toward the top of the trunk lid. Next, disconnect the release button electrical connector (green arrow) by pulling it straight out.

Using diagonal cutters, cut the wire tie securing the harness to the trunk lid.
Figure 5

Using diagonal cutters, cut the wire tie securing the harness to the trunk lid. Do not forget to replace this wire tie later.

Using a small flathead screwdriver, lever the trunk release button out of the trunk lid at the top (red arrow).
Figure 6

Using a small flathead screwdriver, lever the trunk release button out of the trunk lid at the top (red arrow). The button will release from the top first and then the bottom. Note the electrical tape on my screwdriver (green arrow). This is to protect the vehicle body from scratches.

Once the top is released, pull it down in the direction of the red arrow.
Figure 7

Once the top is released, pull it down in the direction of the red arrow. Then lift the button up slightly to detach the lower clips.

Remove the release button from the trunk lid while you feed the harness out.
Figure 8

Remove the release button from the trunk lid while you feed the harness out.

When installing the new release button, install the wiring harness and be sure it is accessible from the interior of the trunk lid.
Figure 9

When installing the new release button, install the wiring harness and be sure it is accessible from the interior of the trunk lid. Then attach the lower clips to the edge of the hole in the trunk lid (red arrow). Then rotate the release button in the direction of the green arrow until it snaps into place. Be sure the release button sits flush on the trunk lid. If needed, remove and reinstall. Next, reconnect the electrical connector. Then check the operation of the trunk release button before closing the trunk. Use a flathead screwdriver to lock the latch (with trunk open). Then unlock it using the key and trunk release handle.

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Comments and Suggestions:
Mr. Parker Comments: I belueve my trunk release button is working. When I press it the light come on and off. However the is not working. Does not move when I turn the key in the keyhole. Any advice?
April 20, 2016
  Followup from the Pelican Staff: Replace the actuator and latch.

Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.
- Nick at Pelican Parts
 

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Page last updated: Fri 12/9/2016 02:43:13 AM