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Key Programming Car Keys The majority of brick and mortar locksmiths and dealership parts departments have tools to help you program replacement keys or restore immobilizer information. These tools are typically bidirectional OBD-II devices. Insert a new key and turn it to the on position without triggering the engine. Repeat this process a few times within a specified time frame that is usually indicated by the door lock cycling or a chime. Self-programming In modern vehicles keys, they contain an electronic chip that co