Replace BMW Key Battery It could be the time to change your battery if your BMW key isn't able to open your car or turn off the engine. Fortunately, it's a simple fix. You simply need to remove the key fob, replace the battery and gently place it back. Follow https://car-key-repairs91005.designertoblog.com/61586067/7-essential-tips-for-making-the-most-out-of-your-bmw-key-fobs