Replace BMW Key Battery It's probably time to replace your battery if your BMW key won't open your car or turn on the engine. Fortunately, it's an easy fix. Simply remove the key fob, replace the battery, and then gently put it back. Follow these steps and you'll be back https://carkeyprogramming80707.slypage.com/30629527/why-bmw-key-fobs-is-still-relevant-in-2023