Programming Car Keys at Home Reprogramming car keys is a complex process that requires specialized tools that are available only to auto locksmiths. Certain manufacturers have technology that blocks anyone except the dealership from reprogramming keys. Start by inserting a blank key into the ignition without turning off the engine. https://g28carkeysolutions10771.theideasblog.com/29868202/what-are-the-myths-and-facts-behind-car-key-programmed