How to Program a Car Key Modern cars come with more than just a key which starts the engine. They also have a remote control that allows you to lock or unlock doors. Key fobs must be programmed in order to function properly. Certain keys for cars can be programmed https://g28carkeys39791.isblog.net/what-experts-in-the-field-would-like-you-to-be-able-to-46492652