One problem related to back up alarm has been reported for the 2001 Audi S4. The most recently reported issues are listed below.
Audis stolen in NJ, NY, PA , va . . . . . . . . . . All over east coast in populated areas Audis get stolen like in nones country . . And authorities do nothing !!!!!!!!!! I am refering especially to Audi S4, tt and a4 . . And 99% end up in newark , NJ . . What does it take for this to stop. . We all know where these people are. . Can be caught like rats . . . . . . . A bait S4 parked in newark and it takes no more than 2 min to see how thiefs show up. . . . . . . . . . . . . . . . . . . . . . . . . . . It's not brain surgery. . It's actually everywhere in central/eastern NJ . . Everywhere . . !!!!!!!!!!!!.