The owner's manual gives no info on this. I was able to loosen the lamp housing by removing a kind of extended nut under a hatch in the back of the car, but the lamp housing seems to be secured at a 2nd location at the front as well, and I can't access that. There's a whole electronics package in place where there might be access to any lamp fastening hardware.

Is there any online help for this, here or elsewhere?

Many thanks.

 

Here's a video: this is not my vid but i found it online when i had to do mine. It's super easy
Replacing tail light bulb in 2008 Audi A4 Avant - YouTube

 

Thanks!!!!!