Replace BMW Key Battery It might be time to replace your battery If your BMW key isn't able to open your car or turn off the engine. It's an easy fix. All you have to do is remove the cover of the key fob take it off, then replace the https://www-thekeylab-co-uk00228.bloginder.com/30765253/why-we-love-bmw-3-series-key-fob-and-you-should-too