Quote Originally Posted by PNW Avant View Post
According to Joey Cucarro (old B6 S4 guru) this can be modified using VAGCOM. Brett, I have a full cable now so let me know if you want to give it a try.

Increase Tail Light Brightness

Here we can increase or decrease the brightness of the rear taillights, brakes, and foglights.

From the start screen hit SELECT under Select Control Module

You will now be taken to a list of the control modules present in your car. For this modification we are interested in 09- Central Electric.

Once in the Open Controller select Adaptation-10.

You will now be taken to the adaptation menu for the Central Electric module. In the Channel section you can select Channels 02, 03, 04; all of which control brightness of each component. Once you type in the value you want, hit READ.

After picking a percentage of brightness, hit TEST. Next hit SAVE. The coding will then be stored. Finally hit DONE GO BACK.
Oh wow, that is cool. I should try that out. I just have the ebay cable, but I am sure I can get in there to tinker around.