Replace BMW Key Battery If your BMW key isn't able to open your car or turning over the engine, it might be time to replace your battery. Fortunately, it's an easy fix. Simply remove the key fob, then replace the battery and gently place it back. Follow these steps and https://carkeyreplacements64871.creacionblog.com/29988016/an-easy-to-follow-guide-to-bmw-3-series-key-fob