Replace BMW Key Battery If your BMW key isn't able to open your vehicle or turning the engine, it might be time to change your battery. Fortunately, it's a simple fix. It's as easy as removing the key fob, then replace the battery and gently put it back. Follow these https://www-thekeylab-co-uk01867.blogsidea.com/36364096/this-is-the-good-and-bad-about-bmw-key-fobs