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. Fortunately, it's a simple fix. It's as easy as removing the key fob, replace the battery and gently place it back. Follow these steps and https://thekeylab00877.life3dblog.com/29487554/9-signs-you-re-a-bmw-3-series-key-fob-expert