Getting a BMW Spare Key The BMW's key fob could require an upgrade in battery. Or perhaps you want to upgrade to a smart key that replaces your smartphone that is compatible with it as a key. BMW must create replacement fobs to your vehicle using the VIN. This is https://car-key-programming57254.webbuzzfeed.com/30639455/10-bmw-key-1-series-tricks-all-experts-recommend