Passive Starting

Passive start can be initiated in different ways. The system receives an indication that the vehicle is about to be started when one of the following occurs:

• contact breaker by starter button closes when the button is pushed
• a signal is received from the central electronic module (CEM) indicating that the brake pedal has been pressed (automatic transmissions)
• clutch switch (manual gearboxes).

The brake or clutch pedal must be depressed in order for the vehicle to start.

When a scan for a remote key begins, the internal antennas are activated and a request is transmitted. Keyless entry remote keys will reply in order, transmitting their identity number and codes. The keyless vehicle module (KVM) compares these codes with its own codes. As soon as a received code matches a programmed code, the remote key is validated and scanning will stop.

The keyless vehicle module (KVM) then sends an encrypted message to the central electronic module (CEM) that an approved remote key has been detected and validated. This validation takes a predetermined amount of time.

If the starter button is pressed, the central electronic module (CEM) transmits a message to the engine control module (ECM) to deactivate the system for the immobilizer, therefore allowing the engine to start. If the starter button is not pressed within a predefined time period, the remote key validation will expire. If the contact breaker by the starter button, or any of the contact breakers by the pedals are reactivated, the system will scan for remote keys again.