How to Save Money on BMW Key Replacement BMW keys are more than standard car keys. They are high-tech devices that enhance security for your vehicle. The key fob connects to the immobilizer system to prevent your vehicle from being hotwired or stolen. You can order an online replacement key https://car-key-reprogramming92659.boyblogguide.com/29485027/what-s-holding-back-the-bmw-3-series-key-fob-industry