How to Save Money on Audi Battery Replacement Is your Audi key fob not locking and unlocking it? This could be a sign that the battery is in need of replacement. To replace the battery, you must open the metal key with flathead, then pop the back cover open using https://carlocksmiths85397.bloggip.com/29863025/the-most-effective-audi-a4-spare-key-tricks-to-make-a-difference-in-your-life