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Right Knee Airbag Replacement
 
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Pelican Technical Article:

Right Knee Airbag Replacement

Nick Czerula

Time:

0.5 hours

Tab:

$50

Talent:

**

Tools:

T27 Torx, trim panel tool, Phillips screwdriver

Applicable Models:

BMW Z4 Convertible (2003-06)
BMW Z4 Coupe (2006)

Parts Required:

Fasteners, airbag

Hot Tip:

Use floor mat from vehicle to kneel on

Performance Gain:

Access to components behind panels

Complementary Modification:

Replace pillar trim as well

Above the right side footwell on BMW Z4 models there is a knee airbag located just above the glove box. The glove box and lower trim panel have to be removed to replace the airbag. You may need a new airbag due to cosmetic damage or a fault code. The glove box also pivots on the plastic panel that houses the airbag. If the pivots fail, you will have to replace the plastic panel, which requires removing the airbag and separating the two.

Always disconnect the battery when working on airbag or restraint system items.

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.

Above the right side footwell on BMW Z4 models there is a knee airbag (red arrow) located just above the glove box.
Figure 1

Above the right side footwell on BMW Z4 models there is a knee airbag (red arrow) located just above the glove box. The glove box and lower trim panel have to be removed to replace the airbag. You may need a new airbag due to cosmetic damage or a fault code. The glove box also pivots on the plastic panel that houses the airbag. If the pivots fail, you will have to replace the plastic panel, which requires removing the airbag and separating the two. Always disconnect the battery when working on airbag or restraint system items. To replace the knee airbag, first disconnect the negative battery cable and wait at least 15 minutes. Start by removing the lower instrument panel footwell trim. See our tech article on footwell trim and general module replacing. Then remove the glove box, see our tech article on glove box removing.

Working at the rear of the plastic trim panel, behind where the glove box mounts, remove the two Phillips head screws (red arrows).
Figure 2

Working at the rear of the plastic trim panel, behind where the glove box mounts, remove the two Phillips head screws (red arrows).

Working at the right upper corner of the plastic trim panel, remove the Phillips head screw (red arrow).
Figure 3

Working at the right upper corner of the plastic trim panel, remove the Phillips head screw (red arrow).

Working at the left upper corner of the plastic trim panel, remove the Phillips head screw (red arrow).
Figure 4

Working at the left upper corner of the plastic trim panel, remove the Phillips head screw (red arrow).

Then remove the four T27 Torx fasteners (red arrows).
Figure 5

Then remove the four T27 Torx fasteners (red arrows). Leave one fastener on each side installed, but almost removed.

Then, lever out the top of the knee airbag.
Figure 6

Then, lever out the top of the knee airbag. There are three clips along the top (red arrows).

Use a plastic prying tool (red arrow) and lever the panel out.
Figure 7

Use a plastic prying tool (red arrow) and lever the panel out. If the metal clips come off, reinstall or replace with new. Be sure to lever behind the hard plastic panel, not the soft airbag cover. Then remove the twoT27 Torx fasteners that were partially installed from step 5.

Then, detach the panel at the top and slide it toward the seat.
Figure 8

Then, detach the panel at the top and slide it toward the seat. Pull it away enough to access the electrical connector for the footwell light (red arrow).

Unclip the electrical connector (red arrow) retainer using a small flathead screwdriver, then remove it (blue arrow).
Figure 9

Unclip the electrical connector (red arrow) retainer using a small flathead screwdriver, then remove it (blue arrow).

Pull the panel with airbag further out of the instrument panel, then disconnect the glove box pin switch electrical connector.
Figure 10

Pull the panel with airbag further out of the instrument panel, then disconnect the glove box pin switch electrical connector. Press the release tab (red arrow) and pull it straight off.

Using a trim panel tool, lever the wiring harness off the plastic panel (red arrows).
Figure 11

Using a trim panel tool, lever the wiring harness off the plastic panel (red arrows). Feed the wiring harness out of the panel as you remove it.

Then remove the airbag and panel, place it on a work bench.
Figure 12

Then remove the airbag and panel, place it on a work bench. Remove the six Phillips head screws (red arrows).

Separate the plastic panel and the airbag.
Figure 13

Separate the plastic panel and the airbag. Then remove the airbag and store it face up in a safe place. Reverse steps to install new airbag. Be sure to use a BMW scan tool and clear any fault codes.

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Page last updated: Fri 12/9/2016 03:00:00 AM