Many people often get confused by the term transponder key. A simple definition for transponder key is a transmitter plus a responder in the form of a microchip and found in most vehicles built in 1995 or later. This type of electronic chip does not need to be recharged, but get power when inserted to the keyhole. Hence, its ability to be used as an enhancement to security systems. The transponder key uses a magnetic coupled transponder system which provides similar services as a transmitter/transponder that sends messages to vehicles, satellites, space stations, airplanes and more.
The transponder chip is hidden within a rubber or plastic head of the key. Once a key is placed and turned into the vehicle ignition, the transponder send alpha numeric sequence identification code signal to an induction coil found around the ignition lock and then to the vehicles computer memory (ECU). If the alpha numeric code is identified by the vehicle, then the vehicle will correspond positively and the car engine will respectively start, and continue to run. Of course, if the wrong transponder key is somehow inserted into the ignition chamber of the vehicle, no valid identifier code will be transmitted and the car will not turn on/run and might even locked itself for couple of minutes.
The transponder chip is hidden within a rubber or plastic head of the key. Once a key is placed and turned into the vehicle ignition, the transponder send alpha numeric sequence identification code signal to an induction coil found around the ignition lock and then to the vehicles computer memory (ECU). If the alpha numeric code is identified by the vehicle, then the vehicle will correspond positively and the car engine will respectively start, and continue to run. Of course, if the wrong transponder key is somehow inserted into the ignition chamber of the vehicle, no valid identifier code will be transmitted and the car will not turn on/run and might even locked itself for couple of minutes.
