Getting a BMW Spare Key Your BMW's key fob may need an upgrade in battery. You might want to upgrade to smart keys, which use your smartphone as a substitute for keys. BMW will prepare replacement fobs for your vehicle using the VIN. This is done to ensure security. This https://thekeylabcouk82158.bloggazza.com/29473935/bmw-key-1-series-tips-from-the-top-in-the-industry