How to Save Money on Audi Battery Replacement Is your Audi key fob having difficulty locking and unlocking it? This could be a sign that the battery is in need of replacement. To replace the battery, you must open the metal key with flathead, then pop the back cover open https://autolocksmith98764.blog-a-story.com/9972458/why-audi-a4-spare-key-is-relevant-2023