Replace BMW Key Battery It could be time to change your battery If your BMW key won't open your car or turn the engine. It's simple to fix. All you need to do is remove the cover of the key fob, carefully remove and replace the battery, then insert it https://carkeyrepairs23995.mpeblog.com/53850367/why-bmw-key-fobs-will-be-your-next-big-obsession