Replace BMW Key Battery If your BMW key isn't opening your car or turning over the engine, it could be time to replace your battery. It's simple to fix. You simply need to remove the key fob, then replace the battery and gently place it back. Follow these steps to https://thekeylab18489.tokka-blog.com/30388658/15-things-to-give-that-bmw-3-series-key-fob-lover-in-your-life