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, open the key made of metal and use a flathead screwdriver to open the back https://carlocksmiths85397.bloggip.com/29901047/audi-a4-spare-key-tips-from-the-best-in-the-industry