How to Save Money on Audi Battery Replacement Is your Audi key fob not locking and unlocking it? This could indicate that the battery is in need of replacing. To replace the battery, turn off the metal key and use a flathead screwdriver to remove the back cover. Place a https://g28-car-key-solutions49456.theisblog.com/30028435/five-audi-a4-spare-key-lessons-from-the-pros