The best place to find out what the lights mean is in your owners manual. If you don't have one you should get one. I was unable to find any free information on-line, but there are subscription sites like Alldata and Mitchell-on-demand that would give you access to all types of repair questions.
Of course the dealership can always answer your questions.
〉 Answered on Dec 20th, 2006 by Lori Johnson, Owner and Instructor at Ladies Start Your Engines
Your local Audi dealership should be able to tell you what any of the dashboard or check engine lights mean for your specific vehicle. If you don't want to take it to a dealership, you can take it to an ASE certified technician at an ASE Blue Seal shop. They are trained to provide you the correct diagnosis.
You can find an ASE certified shop near you by going here: