How to Save Money on Audi Battery Replacement Do you find that your Audi key fob have trouble locking and unlocking? This could be a sign the battery is in need of replacing. To replace the battery, you must open the metal key with flathead, then pop the back cover https://g28-car-key-solutions85680.blogs100.com/30627434/5-must-know-audi-a4-spare-key-practices-for-2023