How to Save Money on Audi Battery Replacement Does your Audi key fob experience difficulty locking and unlocking? This could indicate that the battery is in need of replacement. To replace the battery, open the metal key and use a flathead screwdriver to pop up the back cover. Insert a https://g28-car-keys01208.blogunteer.com/29173677/a-guide-to-audi-a4-spare-key-from-beginning-to-end