Replace BMW Key Battery It could be time to replace your battery If your BMW key won't allow you to open your car or turn on the engine. It's an easy fix. All you have to do is remove the cover for the key fob then carefully remove and replace https://thekeylab-co-uk76905.develop-blog.com/36427699/what-is-bmw-key-fobs-and-why-is-everyone-speakin-about-it