Replace BMW Key Battery It could be the time to change your battery if your BMW key won't open your car or turn the engine. Fortunately, it's a simple fix. It's as easy as removing the key fob, replace the battery and gently put it back. Follow these steps and https://car-key-programming78076.ezblogz.com/61767137/the-most-successful-bmw-key-fobs-gurus-are-doing-three-things