Replace BMW Key Battery If your BMW key isn't opening your car or turning on the engine, it could be the time to replace your battery. Fortunately, it's an easy fix. All you need to do is remove the cover for the key fob take it off, then replace the https://carkeyprogramming24912.amoblog.com/unquestionable-evidence-that-you-need-bmw-3-series-key-fob-52065165