Passive Access Trunk

Pressing the Trunk Lid Switch when trunk is closed indicates the operator's intent to open the trunk and thus triggers the system. Subsequently, the SMK ECU sends a LF-challenge to the SMART KEY FOB via the exterior bumper antenna. The SMART KEY FOB answers with a RF-response. If the received response matches the expected answer, the SMK ECU sends a "trunk open" message via the CAN/LIN network. Special case: If the car is locked, but the ATWS is not armed, LF strategy shall search for FOB at the bumper area excluding trunk and interior area.