How to Save Money on Audi Battery Replacement Is your Audi key fob having difficulty locking and unlocking it? This could be a sign that the battery is in need of replacing. To replace the battery, open the key made of metal using flathead, then pop the back cover open https://g2881892.ampblogs.com/8-tips-to-boost-your-audi-a4-spare-key-game-66634814