Replace BMW Key Battery If your BMW key isn't opening 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 place it back. Follow these steps and https://car-key-programming81957.blogozz.com/29510290/10-bmw-key-fobs-strategies-all-the-experts-recommend