How to Save Money on Audi Battery Replacement Is your Audi key fob having trouble locking and unlocking? This could indicate that the battery is in need of replacement. To replace the battery, flip open the metal key and use a flathead screwdriver to pop up the back cover. Install https://g2881892.ampblogs.com/why-all-the-fuss-about-audi-a4-spare-key-67017867