Just picked up my 1999 A6 Avant, and the only thing not working is the auto-dimming rear view mirror. Any suggestions?

Thanks in advance.

 

I have a similar problem. They are hard to find used -- ebay or recommended parts dealer. A new one will set you back $235 - 350, depending on dealer. USed parts dealers charge $230, so it's a bit silly all around. Some aftermarket parts (in Car-and-Driver) show similar pieces for $99. I'll have to wait on it for now.

Good luck!

-=K=-