Replace BMW Key Battery It's probably time to change your battery If your BMW key isn't able to open your car or turn on the engine. It's a simple fix. Simply remove the key fob, then replace the battery and gently place it back. Follow these steps to get back https://car-key-replacements48611.ltfblog.com/29406282/the-reason-why-bmw-key-fobs-is-everyone-s-obsession-in-2023