What's a Transponder Key?

An immobiliser or immobilizer is an electronic security device fitted to a motor vehicle that prevents the engine from running unless the correct key is present. This prevents the vehicle from being "hot wired" after entry has been achieved and thus reduces motor vehicle theft.

What is a transponder key used for?

Transponders keys provide a higher level of security for vehicles in two ways. They help deter and prevent car theft by rendering 'hot wiring' or breaking the ignition lock ineffective. If the car doesn't detect the key's microchip or the exact serial number, it won't start.

Does my car have a transponder key?

PLASTIC HEAD. If your vehicle was built after 1995, there is a good chance your key contains a transponder chip inside the plastic head. ... If you are not sure if your auto key has a transponder chip, please send a picture of your key along the the Year, Make, & Model of your vehicle to .