I have a 2008 A6 quattro S line. All of a sudden the MMI system works and then doesn't work and then parts of it work and then it doesn't work. etc.
Any suggestions?

 

To reboot your MMI, press the Setup button, the MMI center button (or mouse), and the button to the upper right of the mouse simultaneously for just a second or two.

If that does not work take the car back to the dealer.

 

Thanks so much. I'll give it a try.