Replace BMW Key Battery It's probably time to change your battery If your BMW key won't open your car or turn the engine. Fortunately, it's a simple fix. All you have to do is remove the cover of the key fob, carefully remove and replace the battery, then put it https://www-thekeylab-co-uk27570.thechapblog.com/29599413/you-re-about-to-expand-your-bmw-key-fobs-options