Programming Car Keys at Home Reprogramming car keys is a complicated procedure that requires tools that are only available to auto locksmiths. Certain manufacturers have technology that stops anyone other than the dealership from reprogramming keys. Start by inserting a blank key into the ignition without turning the engine on. https://car-locksmiths21120.blogadvize.com/36140712/what-is-car-key-programmed-history-of-car-key-programmed-in-10-milestones