Replace BMW Key Battery If your BMW key isn't able to open your car or turning on the engine, it could be time to change your battery. Fortunately, it's a simple fix. It's as easy as removing the key fob, replace the battery, and then gently put it back. Follow https://wwwthekeylabcouk59808.pages10.com/why-we-are-in-love-with-bmw-3-series-key-fob-and-you-should-also-65736511