Replace BMW Key Battery It could be time to change your battery if your BMW key won't open your car or turn the engine. Fortunately, it's an easy fix. All you need to do is remove the key fob cover take it off, then replace the battery, and insert it https://thekeylab00877.life3dblog.com/29438268/the-most-significant-issue-with-bmw-3-series-key-fob-and-how-you-can-repair-it