How to Save Money on Audi Battery Replacement Is your Audi key fob having difficulty locking and unlocking? This could indicate that the battery needs to be replaced. To replace the battery, open the metal key using an flathead and then open the back cover open using a screwdriver. Insert https://g2856673.slypage.com/30683000/a-complete-guide-to-audi-a4-spare-key-dos-and-don-ts