Transponder Keys

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A Transponder key transmits and responds by means of a transponder chip, which is embedded in the head or bow of the key. The chip transmits, receives and responds to a coded signal data using radio frequency transmissions. When the key is inserted and turned in the ignition it sends a unique code signal to the on-board computer or ECM (Electronic Control Module). If the computer recognizes the signal it will allow the vehicle to start.