Lateral Accelerometer: Service and Repair

Electronic Stabilization Program Sensor Unit

• Through MY 08, the ESP sensor unit (G419) is located under the right seat.

• Beginning with MY 09, the ESP sensor unit is inside the ABS control module (J104).

• Beginning with MY 09, the ABS control module must be replaced if the ESP sensor unit is faulty.

• Beginning with MY 09, the ABS control module must be calibrated if it was replaced.

• Beginning with MY 09, the steering angle and the braking pressure are stored in the ABS control module and must be calibrated.

• ABS control module Mark 60, refer to => [ Control Module and Hydraulic Unit, ABS/ESP ITT Mark 60 ] Control Module and Hydraulic Unit, ABS/ESP ITT Mark 60

• ABS control module Mark 70, refer to => [ Control Module and Hydraulic Unit, Anti-Lock Brake ITT Mark 70 Overview ] Control Module and Hydraulic Unit, Anti-Lock Brake ITT Mark 70 Overview

Removing

• ESP sensor consists of the following sensors: transverse acceleration sensor (G200) rotation rate sensor (G202) longitudinal acceleration sensor (G251) (only for all-wheel drive vehicles)

- Remove the right seat.

- Remove the rocker panel trim (on passenger side) and lift the carpet.

- Disconnect the connector - 2 -.

- Remove the bolts - 4 -.






- Remove the ESP sensor unit - 1 - upward and out.

- Pos.- 3 - seat crossmember

Arrow in illustration points in driving direction

• The ESP sensor unit is susceptible to strong vibrations.

• If the ESP sensor unit falls to the floor, its trouble-free function can no longer be guaranteed. The sensor unit must no longer be used.

Installing

Installation is in reverse order of removal, with special attention to the following:

- Calibrate the transverse acceleration sensor

- Calibrate the longitudinal acceleration sensor (only on AWD vehicles)

Use the vehicle diagnosis, testing and information system (VAS 5051 B) or (VAS 5052).

- Under chassis

- Brake system (Repair Group 01; 45)

- 01- On Board Diagnostic (OBD) capable systems

- 03- Brake electronics ABS/ESP Mark 60

- Calibrate the transverse acceleration sensor

- Calibrate the longitudinal acceleration sensor (only on AWD vehicles) or

- Perform the ESP driving and system tests.

Use the vehicle diagnosis, testing and information system (VAS 5051 B) or (VAS 5052).

- Under chassis

- Brake system (Repair Group 01; 45)

- 01- On Board Diagnostic (OBD) capable systems

- 03- Brake electronics ABS/ESP Mark 60

- J104- ABS/ASR/ESP Control Module, Functions

Tightening Specifications