Bulb holder contact problem with bulb on 2005 Audi A4 1.8T Sedan

SOURCE: how replace break light bulb in on a4 2005

Replacement of any bulb in the Tail-light assembly is easier then one thinks.

First thing you need to do is gain access to the trunk area. At the top of
the tail-light area inside the trunk is a small circle that needs to be
opened to expose the bolt that you need to remove.

WARNING: Be careful not to loose this bolt or you are going to have to take
apart your trunk interior to retrieve it.

After the bolt is removed the Tail-light assembly will pull out as follows;
Left side: pull out the right side of the assembly
Right side: pull out the left side of the assembly.
The out side of the assembly is held in place by 2 or 3 small nipples.

There will only be one cable that is connected to the assembly. This does not
have to be removed unless you really want to. On both sides of the assembly
there are 2 clips that hold the light plate to the break light lens. After
the clips are loosened the whole light bulb assembly can be removed and the
bulbs replaced.


Restoring the Break-light assembly.

After you have replaced your bulbs and re attached the the bulb assembly, you
will have to first fit the nipples on the outer side of the assembly then
push the inter side into place. Replace the bolt and tighten. You are done.

SOURCE: Audi a3 rear brake light fault

the dealer can fix this or any mechanic with a vag com interface, basically its a matter of programing the tailgate lights (both of them) to work as brake lights. the euro speck enables one of the other or both, same goes for the backup light. if you had a module replaced recently this could be the reason for the change, whoever installed it should be able to rectify this for you.

Greg Bernett

• 2993 Answers
• Posted on Mar 08, 2009

SOURCE: How do I change the passenger headlight bulb on my 2002 Audi A6?

Here you will see the left headlight we are going to take out, but the same procedure can be applied also to the right one (click will open a bigger photo in a new window)


First, remove the cover circled in green (just take it, it is not fixed with screws), then, with a Torx screwdriver, remove the two screws circled in red


Cover removed


Under (yes, almost hidden) the cables circled in red and yellow there are two more Torx screws, you don't need to unscrew them all, only make 2 or 3 rounds


Particular of the screws under the circles in the previous photo (sorry for the bad focus)


Last, we have to remove the power connector. To remove it, pull the little plastic block lever circled in green and then, while holding it, pull out the whole connector (in red). After that the headlight is free, and you can take it out from the chassis


Et voila', headlight removed :) Red circles are for the vertical offset control, don't touch them unless you know what you're doing. Lights are located under the black plastic covers

SOURCE: Troubleshooting a bulb

If it looks like this /|\ and is yellow, then it's your lane assist is inactive

SOURCE: how to replace rear brake light bulb on audi a4

More than likely you will need to remove the entire tail light assembly from the inside of the trunk. You should see some twist knobs under the trunk liner or exposed.