Replace BMW Key Battery If your BMW key isn't opening your car or turning over the engine, it may be the time to replace your battery. Fortunately, it's a simple fix. It's as easy as removing the key fob, then replace the battery, and then gently put it back. Follow https://thekeylab-co-uk42025.humor-blog.com/29416833/what-bmw-key-fobs-experts-want-you-to-know