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Key Programming Car Keys Most brick and mortar locksmiths, as well as dealership parts departments have tools that can help you program replacement keys or restore the immobilizer's data. These tools are typically bidirectional OBD-II devices. Insert an additional key and switch it to the on position without triggering the engine. Repeat this process several times within a specified time period typically indicated by the door lock turning or chiming. Self-programming In modern automobiles keys, they contain an electronic ch