Getting a BMW Spare Key Your BMW's key fob may require an upgrade in battery. 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 vehicle using the VIN. This is done to ensure security. https://the-key-lab61089.diowebhost.com/85291607/bmw-key-1-series-tools-to-facilitate-your-daily-life