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Key Programming Car Keys The majority of dealerships and brick and mortar locksmiths have tools that can assist you in programming replacement keys or restore information from the immobilizer. These tools are usually bidirectional OBD-II units. Insert a brand new, blank key and then turn the ignition to the "on" position without starting the car. Repeat this procedure a number of times within a particular time frame that is usually indicated by the door locks turning or an audible chime. Self-programming In modern cars k