What to Do When You Lose Your BMW Keys BMW cars are costly, and they are equipped with sophisticated anti-theft technology. This makes them hard to steal, but can make matters when you lose your key. If you lose your BMW key the first step is to contact your dealer. https://carkeyreprogramming55723.full-design.com/an-bmw-car-key-cover-success-story-you-ll-never-believe-72663018