System Components

Fig 1: Trunk Lid (PTL) Drive Unit

Courtesy of HYUNDAI MOTOR AMERICA

It is installed inside the left trunk trim of the car and opens and closes the trunk connected to the push rod through the gear motor. It is composed of ECU and drive unit. The drive unit is composed of drive bracket, gear motor, push rod and drive arm.

Fig 2: Power Latch Assembly

Courtesy of HYUNDAI MOTOR AMERICA

It delivers the signals on the trunk lid opening/closing to the power trunk module drive unit.

It is composed of power latch and cinching actuator.

Fig 3: Cinching Actuator

Courtesy of HYUNDAI MOTOR AMERICA

With a built-in motor, the power latch is pulled by unit control of the power trunk module to execute the Step 1/2 locking.

Fig 4: Cinching Actuator

Courtesy of HYUNDAI MOTOR AMERICA

For opening or closing, press the power trunk module button (A) on the wireless transmitter more than one second. If the button is pressed again while the trunk is closing, the trunk operation stops.

Fig 5: Trunk Inner Switch

Courtesy of HYUNDAI MOTOR AMERICA

It is installed in the trim inside the trunk and you cannot manipulate it when the trunk is closed.

If the lock switch is on, PTM unit transmits the trunk lock signal to SMK.

SMK uses bumper antenna to carry out FOB authentication after signal reception. If the registered FOB key is detected, its searches the indoor area.

If all doors are closed and there is no FOB key inside, SMK transmits the door lock command to DDM and the trunk close command to PTM.

DDM and PTM carry out the command and the door is locked and power trunk is closed.

Fig 7: Trunk Glove Box Switch (Within Glove Compartment)

Courtesy of HYUNDAI MOTOR AMERICA

It is mounted in the passenger side glove compartment. It is used to control power trunk LOCK/UNLOCK operation.