Getting a BMW Spare Key The BMW's key fob could require a new battery. It is possible to upgrade to smart keys, which utilize your smartphone as a substitute for a key. BMW will prepare replacement fobs to your vehicle by using the VIN. This is done to ensure security. https://car-key-reprogramming30394.blogdiloz.com/29553960/a-guide-to-bmw-key-1-series-in-2023