What Are Key Programmers? Modern vehicles have key/ignition systems that need to be reprogrammed at a certain time. This is where key programmers come in handy. There are three scenarios where shops may need to have key programming capabilities. The shop may have to program keys in three different situations: https://g28carkeys52472.blogdon.net/what-is-car-key-programmer-near-me-and-how-to-use-it-45457529