How to Save Money on Audi Battery Replacement Do you notice that your Audi key fob have issues locking and unlocking? This could be a sign that the battery is in need of replacing. To replace the battery, open the metal key using a flathead and pop the back cover https://car-locksmiths44908.webbuzzfeed.com/30575914/5-audi-a4-spare-key-lessons-from-the-professionals