Passive Open Tailgate

Pressing the Tailgate Lid Switch when tail gate is closed indicates the operator's intent to open the tailgate 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 "tailgate open" message via the CAN/LIN network.