I have a 2006 A6 4.2 and the drivers side headlight assembly gets foggy on the inside when I drive in the rain. I've searched for hours and can't find a solution to this. I'd like to remove the assembly so I can check/fill any cracks and seals to fix this problem but I can't find a DIY anywhere that shows how to remove the entire assembly. Can someone point me in the right direction? Thanks in advance...

 

Audi A6 Service Manual: 1998-2004; includes A6, allroad quattro, S6, RS6 - $62.97 w/free shipping

 

Thank you however I need instructions for a 2006 and I can only find service manuals up to 2004 model year on the A6. I'll keep searching for the C6 version...