BMW Key Fob Replacement Cost BMW dealerships charge from $400 and $650 for new car key fob. You can save money by purchasing a BMW keyfob online and then having it programmed at home. Most BMW fobs have rechargeable batteries. You can purchase batteries at a hardware or big-box retailer. https://thekeylab86754.rimmablog.com/29556231/your-family-will-be-grateful-for-getting-this-bmw-key-fob-replacement