Programming Car Keys at Home Car key reprogramming is a procedure that requires special equipment that only auto locksmiths have access to. Certain manufacturers have technology that stops anyone other than the dealership from changing keys. Start by inserting a blank key into the ignition without turning the engine on. https://car-locksmiths06369.full-design.com/what-is-car-key-programmed-and-how-to-use-it-72079277