What Functions Does a BMW Key Fob Have? If you have a BMW, chances are that your key fob comes with many functions. You can use it to unlock your doors, control your windows and even start the engine. There are a few tricks you might not be aware of. https://carkeyprogramming92155.blog-kids.com/30187668/bmw-key-fobs-tips-from-the-most-successful-in-the-industry