Replace BMW Key Battery If your BMW key isn't able to open your vehicle or turning the engine, it might be the time to replace your battery. Fortunately, it's a simple fix. You simply need to remove the key fob, then replace the battery and gently place it back. Follow https://carkeyrepairs06926.blogolize.com/the-top-bmw-key-fobs-tricks-to-rewrite-your-life-69458427