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 are able to communicate. This can be done either by a locksmith, or a dealership depending on the car manufacturer. https://carlocksmith37455.shotblogs.com/how-do-you-know-if-you-re-in-the-right-position-to-go-after-car-key-reprogramming-43491492