How to Program a Car Key Modern cars use more than just a single key to start the engine, they also have a remote that can lock and unlock doors. Key fobs must be programmed to work properly. Some car keys can be preprogrammed by the owner himself, but it https://g2868197.rimmablog.com/28834317/what-is-car-key-programing-history-of-car-key-programing-in-10-milestones