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

How does immobilizer work?

Today's immobilizer consists of two key parts: a transponder in the ignition key and a receiver in the car itself. When someone attempts to start the engine, the vehicle sends a request to the key. If the key returns the correct predefined signal, the immobilizer sends a command to the engine control unit to start.

How do I reset my immobiliser?

Hold down the panic button for five seconds to reset the immobilizer. Next, push the lock button two times and wait ten feet away from the car for ten minutes.