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Audi A4 Third Brake Light Replacement
 
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Pelican Technical Article:

Audi A4 Third Brake Light Replacement

Steve Vernon

Time:

1 hour1 hr

Tab:

$310

Talent:

*

Tools:

Hands

Applicable Models:

Audi A4 (2002-05)
Audi A4 Cabriolet (2003-06)

Parts Required:

New brake light

Hot Tip:

Always lever off gently

Performance Gain:

Working third brake light

Complementary Modification:

Check all your other bulbs

If your upper mounted third brake light is starting to fail or has stopped working completely, you should replace it immediately. While the light is expensive, it is an integral part of the brake warning system. Failure to have a working third brake light will result in a fix it ticket. The third brake light on the Audi A4 sedan is located in the lower rear window and is only accessible through the trunk.

The bulb assembly is made up of a series of small LED lights wired together and is sealed in a plastic strip. While you may be able to get it open to replace individual LEDs, Audi does not supply individual LED replacement lights and only sells the complete bulb holder.

The third brake light on the Audi A4 sedan is located in the lower rear window (red arrow) and is only accessible through the trunk.
Figure 1

The third brake light on the Audi A4 sedan is located in the lower rear window (red arrow) and is only accessible through the trunk. It helps to fold down the rear seats, as it will give you both more light and room to work.

The light is accessible through an opening in the body (red arrow).
Figure 2

The light is accessible through an opening in the body (red arrow). There is no cover over this, so access is easy.

Begin by unplugging the same wiring connection from the light (yellow arrow).
Figure 3

Begin by unplugging the same wiring connection from the light (yellow arrow). Use care, as it is a very small connection and easy to break.

Our light had an extra clip that was wedged between it and the fiberboard that looked like it was used to hold a wiring harness.
Figure 4

Our light had an extra clip that was wedged between it and the fiberboard that looked like it was used to hold a wiring harness. If you have something like this, simply slip it out from between the board and fixture (yellow arrow).

There are two small plastic clips (yellow arrow), one on each side, of the light fixture.
Figure 5

There are two small plastic clips (yellow arrow), one on each side, of the light fixture. Use gentle pressure and pull them down and slide the fixture out.

With both clips unhooked, you can slip the fixture from the access hole (yellow arrow).
Figure 6

With both clips unhooked, you can slip the fixture from the access hole (yellow arrow).

The bulb assembly is made up of a series of small LED lights wired together and is sealed in a plastic strip.
Figure 7

The bulb assembly is made up of a series of small LED lights wired together and is sealed in a plastic strip. While you may be able to get it open to replace individual LEDs, Audi does not supply individual LED replacement lights and only sells the complete bulb holder. Installation is the reverse of removal.

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Comments and Suggestions:
jot Comments: What about for audi A4 vintage 2008 ? There the light is part of the luggage lid.
November 29, 2016
  Followup from the Pelican Staff: We don't currently have that tech article. If we get a chance to perform the procedure, we will be sure to document it.


I would grab a repair manual. It will have the procedure, special tools and torque specs.


Give our parts specialists a call at 1-888-280-7799. - Nick at Pelican Parts
 

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Page last updated: Wed 5/24/2017 02:51:07 AM