Immobilizer Control System: General: Notes

The immobilizer system consists of a passive challenge-response (mutual authentication) transponder inside the key head and the SMARTRA (SMART Transponder Antenna) unit.

The SMARTRA unit contains an integrated inductive antenna and electronics around the lock assembly. The SMARTRA communicates to the ECM (Engine Control Module) via a dedicated communications line.

Since the vehicle engine management system is able to control engine mobilization, it is the most suitable unit to control the SMARTRA.