How to Save Money on Audi Battery Replacement Does your Audi key fob have trouble locking and unlocking? This could be a sign that the battery is in need of replacement. To replace the battery, turn off the metal key and use a flathead screwdriver to remove the back cover. https://autolocksmiths88063.imblogs.net/79656060/five-audi-a4-spare-key-projects-for-any-budget