Getting a BMW Spare Key The BMW's key fob might require new batteries. It is possible to upgrade to smart keys, which use your smartphone as a substitute for the key. BMW will prepare replacement fobs for your car by using the VIN. This is done to protect your vehicle. https://www-thekeylab-co-uk00228.bloginder.com/30766355/15-unexpected-facts-about-bmw-key-1-series-that-you-ve-never-heard-of