My 99 A4 seems to be at that age that it keeps my Audi mechanic busy. Recently the air bag light came on and stayed on. I would rather not take it in if I don't have to. Was wondering if a brave sole can check of few areas without detonating the air bags. With 90K miles on the car, what's the likely culprit? The car was rear ended 6 months ago, and the bags were not deployed. The light never came on until a few months after I got it from the shop. Any help thanks