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 a simple fix. Simply remove the key fob, replace the battery, and then gently put it back. Follow these steps and you'll be back on https://car-key-reprogramming35045.canariblogs.com/the-reasons-bmw-key-fobs-is-everyone-s-obsession-in-2023-45307458