What Functions Does a BMW Key Fob Have? Your BMW key fob probably has numerous functions. You can use it to unlock your doors, control your windows and even start your engine. There are some tricks you may not know about. Here are a few of the most effective. Functions https://car-key-reprogramming92659.boyblogguide.com/29577402/15-bmw-key-fobs-benefits-that-everyone-should-be-able-to