Programming Car Keys at Home Reprogramming keys for cars is a complex procedure that requires tools that are only available to auto locksmiths. Some manufacturers have technology which prevents anyone but the dealership from programming keys. Begin by inserting a blank key into the ignition, without turning the engine on. https://g28carkeysolutions61114.livebloggs.com/35457136/10-beautiful-images-of-car-key-programer