Getting a BMW Spare Key The BMW's key fob could require a new battery. Perhaps you'd like to upgrade to a smart key, which substitutes your compatible smartphone as a key. BMW must prepare replacement fobs to your vehicle using the VIN. This is done to protect your vehicle. This https://www-thekeylab-co-uk90977.tinyblogging.com/how-bmw-key-1-series-was-able-to-become-the-no-1-trend-on-social-media-73783923