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, open the key made of metal using a flathead and pop the back cover open https://g2862646.dsiblogger.com/62657344/audi-a4-spare-key-the-good-and-bad-about-audi-a4-spare-key