Replace BMW Key Battery If your BMW key isn't opening your car or turning on the engine, it might be time to replace your battery. It's a simple fix. It's as easy as removing the key fob, then replace the battery and gently place it back. Follow these steps and https://carkeyreplacement09721.bligblogging.com/30767159/bmw-key-fobs-the-good-and-bad-about-bmw-key-fobs