Antilock Brakes / Traction Control Systems: Service and Repair

ESP Assembly Overview






1 Right Rear ABS Wheel Speed Sensor (G44)

• Can be checked in "Guided Fault Finding" with Vehicle Diagnosis, Testing and Information System (VAS 505 x).

• Removing and installing, refer to => [ Rear ABS Wheel Speed Sensor ] Rear ABS Wheel Speed Sensor.

2 Left Rear ABS Wheel Speed Sensor (G46)

• Can be checked in "Guided Fault Finding" with Vehicle Diagnosis, Testing and Information System (VAS 505 x).

• Removing and installing, refer to => [ Rear ABS Wheel Speed Sensor ] Rear ABS Wheel Speed Sensor.

3 Sensor electronics control module (J849)

• Combined in one housing

• Component location: under center console extension

• Can be checked in "Guided Fault Finding" with Vehicle Diagnosis, Testing and Information System (VAS 505 x).

• Removing and installing, refer to => [ Sensor Electronics Control Module ] Sensor Electronics Control Module.

4 Brake Light Switch (F)

• Component location: on brake pedal

• Can be checked in "Guided Fault Finding" with Vehicle Diagnosis, Testing and Information System (VAS 505 x)

• Removing and installing, refer to => [ Brake Lamp Switch ] Service and Repair.

• Cannot be reused after removal.

5 Brake Pedal

• With a mount for the brake lamp switch.

• Removing and installing, refer to => [ Brake Pedal ] Brake Pedal.

6 Diagnostic Connection

• Component location: Driver side footwell cover.

7 Left Front ABS Wheel Speed Sensor (G47)

• Can be tested in "guided fault finding" with the vehicle diagnosis, testing and information system (VAS 505 x).

• Removing and installing, refer to => [ Front ABS Wheel Speed Sensor ] Front ABS Wheel Speed Sensor.

8 ABS Hydraulic Unit (N55) with ABS Control Module with EDL (J104)

• The hydraulic control unit is comprised of the hydraulic unit and control unit.

• Do not disconnect connector before successfully completing On Board Diagnostic (OBD). Switch ignition off before separating connector.

• Component location: On the hydraulic unit inside the engine compartment, in the front and on the left side.

• Removing and installing, refer to => [ ABS Hydraulic Unit with ABS Control Module ] ABS Hydraulic Unit With ABS Control Module.

• To remove, remove the coolant reservoir.

9 Steering Angle Sensor (G85)

• The steering column electronic systems control module (J527) holds the airbag spiral spring/return spring with slip ring (F138) and the steering angle sensor.

• Removing and installing, refer to => [ Steering Angle Sensor ] Service and Repair.

10 Return Ring

11 Right Front ABS Wheel Speed Sensor (G45)

• Can be checked in "Guided Fault Finding" with Vehicle Diagnosis, Testing and Information System (VAS 505 x).

• Removing and installing, refer to => [ Front ABS Wheel Speed Sensor ] Front ABS Wheel Speed Sensor.

12 -AUTO HOLD- Button (E540)

• Located in the center console.

• Hill start, refer to => [ Hill Start ] Hill Start.

• Removing and installing, refer to => [ -AUTO HOLD- Button ] Service and Repair.

13 Parking Brake Contact Switch (F321)

• Component location: In center console.

• Removing and installing, refer to => [ Parking Brake Contact Switch ] Parking Brake Contact Switch.

Explanation of brake system indicator lamps, refer to => [ Brake System Indicator Lamps ] Brake System Indicator Lamps.

Diagnostic Connection