How to Save Money on Audi Battery Replacement Do you notice that your Audi key fob experience difficulty locking and unlocking? This could be a sign the battery is in need of replacement. To replace the battery, simply open the metal key using a flathead and pop the back cover https://g2823931.thezenweb.com/why-people-are-talking-about-audi-a4-spare-key-this-moment-67952403