How to Save Money on Audi Battery Replacement Does your Audi key fob have issues locking and unlocking? This could be a sign that the battery needs to be replaced. To replace the battery, simply open the metal key using a flathead and pop the cover off using a screwdriver. https://auto-locksmith93141.blogchaat.com/29900455/find-out-more-about-audi-a4-spare-key-when-you-work-from-at-home