What Functions Does a BMW Key Fob Have? If you have an BMW, chances are that your key fob comes with numerous functions. It can be used to unlock your doors, operate your windows, and even start the engine. There are some tricks that you may not be aware of. https://car-key-repairs40304.blue-blogs.com/36858931/how-to-find-the-perfect-bmw-key-fobs-on-the-internet