BMW Key Fob Replacement Cost BMW dealerships charge between $400 to $650 for a new car key fob. However, you can save a significant amount of money by buying a BMW key fob online and then having it programmed at home. The majority of BMW fobs come with replaceable batteries. https://wwwthekeylabcouk60234.mybuzzblog.com/9801435/what-bmw-key-fob-replacement-you-ll-use-as-your-next-big-obsession