Replace BMW Key Battery It's probably time to replace your battery if your BMW key won't open your car or turn off the engine. It's a simple fix. It's as easy as removing the key fob, replace the battery and gently place it back. Follow these steps and you'll be https://thekeylab07325.get-blogging.com/30543012/a-guide-to-bmw-key-fobs-from-start-to-finish