Replace BMW Key Battery It might be the time to change your battery If your BMW key isn't able to open your car or turn off the engine. It's a simple fix. All you need to do is remove the cover of the key fob take it off, then replace https://car-key-repairs40304.blue-blogs.com/36911552/buzzwords-de-buzzed-10-other-ways-for-saying-bmw-3-series-key-fob