General Information: General Description

The immobilizer system consists of a passive challenge-response (mutual authentication) transponder inside the key head, the encoded SMARTRA3 unit/key and the PCM can decode the secret code stored in the SMARTRA3.

The PCM carries out the immobilizer function, the SMARTRA3 management and the key management. The immobilizer function is the unlocking of PCM only after detection of a valid ignition key/the SMARTRA3 and the locking of PCM after switching off the engine. The PCM communicates the encoded messages to the SMARTRA3 via a dedicated communication line and confirms the key with the SMARTRA3.

The PCM related to immobilizer has the 3 kinds of software. At the first IGN on, the PCM concludes the software of each option (smart key, non-encoded SMARTRA3, encoded SMARTRA3) by communication. It is called "The autodetection for PCM" The PCM keeps the previous option before being neutral when it is set to each option.