How to Save Money on Audi Battery Replacement Do you notice that 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, simply open the metal key using flathead, then pop the back cover https://car-locksmiths18122.amoblog.com/the-most-successful-audi-a4-spare-key-gurus-can-do-three-things-52071441