Replace BMW Key Battery If your BMW key isn't able to open your vehicle or turning the engine, it could be time to replace your battery. It's an easy fix. You simply need to remove the key fob, replace the battery and gently place it back. Follow these steps to https://car-key-repairs40304.blue-blogs.com/36911552/buzzwords-de-buzzed-10-other-ways-for-saying-bmw-3-series-key-fob