Electric Differential Lock Control Unit, Basic Function - GF35.40-P-9890A

WARNING: This page is about a different car, the 2023 Mercedes-Benz GLC300, 2022 Mercedes-Benz GLC300, 2021 Mercedes-Benz GLC300, 2020 Mercedes-Benz GLC350e, and 2020 Mercedes-Benz GLC300. However, it is still accessible from the selected car via links, so may be relevant.

Model all (CAR)

with code 467 (Electronic locking differential)

Courtesy of MERCEDES-BENZ USA

Example illustration

Overview

This document contains information on:

General
Function requirements
Function

General

The electric differential lock control unit actuates the multiplate clutch of the differential lock via the differential lock actuator.

Function requirements

Wheel speed signal
Drivetrain operational signal
Ignition ON (circuit 15)

Function

The differential lock control unit actuates the multiplate clutch of the differential lock via the differential lock actuator. When the actuator is actuated, the electronic differential lock closes.

The Hall sensor integrated into the actuator reports back the position, and the temperature sensor (also integrated) reports back the temperature of the actuator to the ESP® control unit. Via the same route, the control unit sends the locking ratio as well as the status of the actuator back to the ESP® control unit

The electric differential lock temperature sensor continuously measures the oil temperature.