How to Get a genuine bmw replacement key (cse.google.pl said in a blog post) Genuine BMW replacement keys are created specifically for your vehicle and add security as well as reliability and selling value. The keys are available online or in retail stores at a reasonable price. Some criminals may hack your BMW key fob to gain access to your vehicle. Keep your BMW key fob in a bag that blocks signals to protect yourself. Cost If you have lost your BMW key fob, or simply need a no spare, there are several steps that need to be taken to get a replacement. First, you need to visit an authorized BMW centre. You will have to provide the technician with the 17-digit VIN code (located on the windshield or in the jamb of the driver's door) and proof of ownership. You will also have to pay an amount to replace the key fob. Once this is done, the key fob will be mailed to you. The process can take as long as 2 days, but it's worth it for those who own a bmw key replacement.