Getting a BMW Spare Key You might require replacing the battery in your BMW key fob. It is possible to upgrade to smart keys that use your smartphone as a replacement for keys. BMW must prepare replacement fobs to your vehicle using its VIN. This is done to ensure security. https://the-key-lab11455.activoblog.com/31107072/the-reason-why-everyone-is-talking-about-bmw-key-1-series-right-now