Replace BMW Key Battery It could be time to replace your battery If your BMW key won't open your car or turn on the engine. It's an easy fix. All you have to do is remove the cover for the key fob, carefully remove and replace the battery, then put https://carkeyrepairs69065.blogdeazar.com/30178143/what-is-bmw-key-fobs-and-how-to-make-use-of-it