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Front Side Marker Light Replacement
 
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Pelican Technical Article:

Front Side Marker Light Replacement

Nick Czerula

Time:

1 hours1 hrs

Tab:

$50

Talent:

**

Tools:

Flathead screwdriver

Applicable Models:

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

Parts Required:

Light bulbs, sockets if needed, lens, trim pieces

Hot Tip:

Do not touch bulbs with bare hands

Performance Gain:

Working exterior lights

Complementary Modification:

Replace bulbs in pairs

There are a number of exterior light bulbs around your BMW Z4 that require maintenance. The front side marker lights are located in the front fender and work in conjunction with the turn signal light next to the headlight.

Bulb monitoring by the light module (LM) is done both cold and hot (unlit or lit). In cold monitoring, LM sends brief current pulses to unlit bulbs to measure their resistance. The pulses are too short to illuminate bulbs but serve the purpose of evaluating whether an individual bulb or bulb circuit is defective. In hot monitoring, LM measures the current to individual lit bulbs to determine overload or a break in the circuit.

When dealing with bulb failures or bulb out messages, always inspect the electrical connector and taillight bulb holder. The connectors can wear over time causing heat and melting. Once the electrical connector on the harness side or the taillight socket has melted, you will have a poor connection and rear bulb faults or failures. If you find the connector is melted, you can repair it by installing a new plug pigtail and / or replacing the bulb socket assembly.

Keep in mind that when your car was serviced before, parts may have been 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.

The side marker lens and bulb (yellow arrow) can be separated from the plastic mounting bracket / body trim.
Figure 1

The side marker lens and bulb (yellow arrow) can be separated from the plastic mounting bracket / body trim.

Grab the side marker lens and pull it straight out of the fender (yellow arrow) to detach the retaining tabs (red arrows).
Figure 2

Grab the side marker lens and pull it straight out of the fender (yellow arrow) to detach the retaining tabs (red arrows).

To replace the bulb or socket, press the electrical connector release tab (red arrow) and pull it straight off to remove it.
Figure 3

To replace the bulb or socket, press the electrical connector release tab (red arrow) and pull it straight off to remove it.

Rotate the bulb socket counter-clockwise 45° and remove it from the lens.
Figure 4

Rotate the bulb socket counter-clockwise 45 degrees and remove it from the lens. The rubber seal may stick (red arrow). Work carefully not to tear it. Then pull the bulb out of the socket (inset) to replace it. To install, reverse the instructions.

To replace the lens, you will have to rotate the lens within the trim piece to move the tabs (yellow arrows) to the slots (red arrows).
Figure 5

To replace the lens, you will have to rotate the lens within the trim piece to move the tabs (yellow arrows) to the slots (red arrows).

Press the lens in toward the trim piece.
Figure 6

Press the lens in toward the trim piece. This will unlock the lens. Hold it pressed in and rotate it until the tabs reach the slots. Then remove the lens from the trim piece.

When installing, you will align the largest tab (red arrow) with the largest slot (yellow arrow).
Figure 7

When installing, you will align the largest tab (red arrow) with the largest slot (yellow arrow). This ensures the correct orientation of the lens / emblem with the trim piece and fender.

Align the lip on the trim piece (yellow arrow) with the lip on the fender (red arrow) and press it into the fender.
Figure 8

Align the lip on the trim piece (yellow arrow) with the lip on the fender (red arrow) and press it into the fender. Listen for the audible snap of the clips to confirm it is properly seated.

The roundel or BMW emblem is also replaceable.
Figure 9

The roundel or BMW emblem is also replaceable. Use an old credit card (red arrow) to break the bond of the foam tape and the emblem. Push the card in around the perimeter of the emblem.

Then, pull the emblem off.
Figure 10

Then, pull the emblem off. Clean the lens and install a new emblem. Be sure to align the plastic posts with the holes in the emblem when installing (red arrows).


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Page last updated: Fri 12/9/2016 02:54:53 AM