How to Save Money on Audi Battery Replacement Is your Audi key fob having difficulty locking and unlocking it? This could indicate that the battery is in need of replacement. To replace the battery, open the key made of metal and use a flathead screwdriver to remove the back cover. https://g28carkeys40041.blogolenta.com/26695809/5-audi-a4-spare-key-tips-you-must-know-about-for-2023