How to Save Money on Audi Battery Replacement Does your Audi key fob have issues locking and unlocking? This could be a sign that the battery is in need of replacement. To replace the battery, open the key made of metal using an flathead and then open the back cover https://car-locksmith73359.tribunablog.com/a-step-by-step-guide-to-picking-your-audi-a4-spare-key-44189389