BMW Key Fob Replacement Cost BMW dealerships charge anywhere from $400 to $650 for a new car key fob. You can save money by purchasing a BMW keyfob on the internet and having it programmed at home. Most BMW fobs have replaceable batteries. You can buy an additional battery at https://thekeylabcouk31359.bloggerchest.com/30118258/what-is-bmw-key-fob-replacement-and-how-to-utilize-it