Replace BMW Key Battery It could be time to replace your battery If your BMW key won't open your car or turn the engine. It's a simple fix. All you need to do is remove the key fob cover take it off, then replace the battery, and then insert it https://wwwthekeylabcouk89079.suomiblog.com/5-must-know-bmw-key-fobs-practices-you-need-to-know-for-2023-45869172