Yeah it does seem totally weird that I need to go through all of this but it could be due to the revision of CEM that came in my A3. Well tonight instead of going through a whole soldering event I located the pins for one of three rear brake lights and used vcds to make that light a tail light that powers the rear LEDs. Now everything working correctly...Unfortunately I currently don't know anyone here in the Portland area that has a face-lifted A3 with the LED DRLs.Do you know anyone that has a facelift A3 that came with the LED headlights already? If so, check the wiring on theirs. I find it weird that you have to wire them to where the rear LEDs plug in.
Literally same thing happened to me. Bought new lights and everything put them in and still nothing, did u ever find out what the issue was and how to fix it??Well I looked for the tail light fuse everywhere and can't find it. Also, I coded back to the orignal code before I made any changes and no luck. I think I need to be a little more specific about what's not working. On the face lift models (like mine) there is a led strip in the rear housings that lights up as the tail lights. That is what I cannot get to turn on. Still no error code and using the VCDS it read the tail light circuit as being 100%??? I'm so confused...Also both sides are out and I assume it happened at the same time.