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Key Programming Car Keys The majority of brick and mortar locksmiths, as well as dealership parts departments have tools to help you program replacement keys or restore immobilizer data. These tools are usually bidirectional OBD-II units. Insert a new key and turn it to the off position, without starting the engine. Repeat this process a couple of times within a particular time period that is typically accompanied by door locks cycling or a chime that sounds. Self-programming In modern automobiles, the key fob contains a mi