With the hot weather in the UK I've noticed that the Solar Sunroof on my 98 A6 is not running the ventilation fan. I've checked the solar panel is producing power with a meter (10.9v) and followed the wiring down to the footwell where it plugs into the main harness which runs up behind the centre of the dash. Still getting voltage there.
I'm assuming that it must be a fuse or a relay that is faulty - can anyone give me any thoughts on where to look next please.?