Trunk / Liftgate: Description and Operation

A. General

The trunk lid remote control includes a remote controlled unlocking feature for the trunk lid. This function can be actuated with a switch in the passenger compartment or by pressing the button twice on the infrared remote central locking (IRCL). This auxiliary function for the trunk lid can be switched off mechanically in the same manner as previously by turning the key to the 90° position and then removing. Unintentional actuation while driving is prevented by checking the speed signal.

After actuating the trunk lid remote control function the vehicle is unlocked centrally and the trunk lock is then opened by an actuator retracting the locking pawl. This causes the retractable trunk lid grip to extend so that the trunk lid can be opened easily. It is not possible to open the trunk lid with the switch in the passenger compartment when the vehicle is locked from the outside. This is intended to prevent a thief from breaking into the trunk.

B. Components

Component Identification, Part 1:

Pneumatic system equipment multi-function control module (A37) with two additional electrical inputs (pin 9, trunk lid remote control switch, pin 10, speed signal), as well as one electric output (pin 8, trunk lid remote control solenoid valve actuation).

Component Identification, Part 2:

Remote trunk lid opening switch (S15) with integrated indicator lamp indicating that trunk lid is open.

Trunk Lid Remote Control Valve (Y65/3):

Lock Connection In Sedan:

Lock Connection In Coupe:

Rear Lock On W/V/VC 140 With Trunk Lid Remote Control:

C. Function sequence

Illustrated On Sedan:

1 The pneumatic system equipment multifunction control module (A37) is actuated by the remote trunk lid opening switch (S15) or the infrared remote central locking control module (N54), (when remote control button is pressed twice within 0.8 seconds).