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Key Programming Car Keys The majority of brick and mortar locksmiths and dealership parts departments have tools that can help you program replacement keys or restore immobilizer data. These tools are typically bidirectional OBD-II devices. Insert an additional key and turn it to the on position, without starting the engine. Repeat this process a couple of times within a particular time frame that is typically accompanied by the door locks turning or an audible chime. Self-programming In most modern automobiles, the key fo