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Key Programming Car Keys The majority of dealerships and brick and mortar locksmiths are equipped with tools to help you program replacement keys or restore immobilizer data. These tools are usually bidirectional OBD-II devices. Insert a new, blank key and turn the ignition to the "on" position without actually starting the car. Repeat this process several times over a predetermined period of time, which is usually indicated by the door lock being on the move or chiming. Self-programming In modern automobiles the keyf