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 utilize your smartphone as a substitute for keys. BMW must prepare replacement fobs for your vehicle with the VIN. This is done to protect your vehicle. https://car-key-programming78076.ezblogz.com/61810314/5-bmw-key-1-series-lessons-from-the-pros