What is Car Keys Programming? Modern cars have a computer chip in the key fob to connect with the vehicle. This computer and key must be programmed so that they can communicate with each other. Depending on the car manufacturer, this can be done by a locksmith or the dealership. https://g28carkeysolutions81504.theblogfairy.com/28938532/what-is-car-key-reprogramming-and-why-is-everyone-dissing-it