How to Program a Car Key Modern cars come with more than just a key to start the engine. They also include a remote to lock and unlock doors. Key fobs must be programmed in order to function properly. Certain keys for cars can be preprogrammed by the owner themselves https://autolocksmiths59211.ampedpages.com/this-is-the-one-car-key-programing-trick-every-person-should-learn-56579147