I had a rear brake light bulb out on my 2008 Q7 so i bought a bulb from the dealership and changed it out myself. I tested it and it worked. Use the car that night and had no issues until the next morning when i received the notification on the dash stating brake light bulb out. This is the same location that was out before. I took the bulb out and its good. I even bought a new one just to make sure and the dam thing doesn't work. The rest of the rear lights work but that one socket. Any ideas?