How to Save Money on Audi Battery Replacement Are you experiencing issues with your Audi key fob not locking and unlocking? This could be a sign that the battery must be replaced. To replace the battery, open the metal key using an flathead and then open the back cover open https://auto-locksmith86008.blogscribble.com/30110272/15-shocking-facts-about-audi-a4-spare-key-you-ve-never-known