Replace BMW Key Battery It's probably the time to change your battery if your BMW key won't open your car or turn the engine. It's an easy fix. It's as easy as removing the key fob, then replace the battery and gently put it back. Follow these steps to be https://car-key-programming31388.myparisblog.com/30658842/14-questions-you-shouldn-t-be-anxious-to-ask-bmw-3-series-key-fob