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Key Programming Car Keys The majority of dealerships and brick and mortar locksmiths are equipped with tools to assist you in programming replacement keys or restore information from the immobilizer. These tools are usually bidirectional OBD-II devices. Insert a new, blank key and turn the ignition to the "on" position without starting the vehicle. Repeat this procedure several times within a certain period of time that is usually identified by the door locks turning or chiming. Self-programming