Hello, I've just become the proud owner of an '02 S8. I'm very impressed with the general quality and the ride. However, while driving today the engine management light has come on. It was a private sale so no warranty. Is there any way I can self diagnose? What is VAGCOM I've seen mentioned many times? Finally, on a lighter note - how do I get at the front fog lights to change a blown lamp? Thanks for your help. Regards, Paul Green.