Transponder Key Programming
When the key is turned in the ignition cylinder, the car's computer transmits a radio signal to the transponder circuit. The circuit has no battery, it is energised by the radio signal itself.The circuit typically has a computer chip that is programmed to respond by sending a coded signal back to the car's computer. If the circuit does not respond or if the code is incorrect, the engine will not start. Many cars immobilise if the wrong key is used by intruders. Transponder keys successfully protect cars from theft. Many people who have transponder keys are not aware of the fact because the circuit is hidden inside the plastic head of the key. All cars sold for the UK markets from 1994 have immobiliser technology to prevent theft. We have sophisticated key programming equipment, which allows our mobile units to program replacement transponder keys at the roadside for most makes of vehicle.
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