Audi A4 Stereo won turn on?
I replaced the battery in my 2003 Audi A4 and now I can not get my radio to turn on. Do I need to do something special to get this thing going again. Thanks A: Yes, you need to get in touch with an audi dealer and give them your vin# so they can give you a special code to get the radio going again. It’s from a security feature to prevent theft of the radio.