Antilock Brakes / Traction Control Systems: Locations

Anti-Lock Brake Systems

ABS and ESP Assembly Overview







1 Traction Control Indicator Lamp -K86-
• Located in the instrument cluster
2 ABS Warning Lamp -K47-
• Located in the instrument cluster
3 Brake System Warning Lamp -K118-
• Located in the instrument cluster Driver Information System
4 Steering Angle Sensor -G85-
• Installed in coil ring with slip ring on steering column => [ Steering Angle Sensor ] See Image Below.
5 Parking Brake Pressure Switch -F234- => [ Electromechanical Parking Brake Component Overview ] Locations
• Located in the center console
6 ESP Sensor Unit -G419- => [ ESP Sensor Unit ] See Image Below.
Integrated with the following:
• Transverse Acceleration Sensor -G200-

• Rotation Rate Sensor -G202-

• Located under the center console extension
7 Wheel Bearing/Wheel Bearing Unit
• The ABS sensor ring is installed inside the wheel bearing
8 Right / Left Rear ABS Wheel Speed Sensor -G44- / -G46- => [ Rear Speed Sensor ] See Image Below.
9 Diagnostic Connection
• Located in the driver side footwell cover
10 Wheel Bearing/Wheel Bearing Unit
• The ABS sensor ring is installed inside the wheel bearing
ABS and ESP Assembly Overview Continued





11 - Right Front ABS Wheel Speed Sensor -G45- /Left Front ABS Wheel Speed Sensor -G47- => [ Front Speed Sensor ] See Image Below.

12 - ABS Hydraulic Unit -N55- with ABS Control Module -J104-
• The hydraulic control unit is located on the hydraulic unit in left the engine compartment and is comprised of the hydraulic unit and control unit
• Right Front ABS Inlet Valve -N99- /Left Front ABS Inlet Valve -N101-

• Right Front ABS Outlet Valve -N100- /Left Front ABS Outlet Valve -N102-

• Right Rear ABS Inlet Valve -N133- /Left Rear ABS Inlet Valve -N134-

• Right Rear ABS Outlet Valve -N135- /Left Rear ABS Outlet Valve -N136-

• Driving Dynamics Regulation Switch Valve 1 -N225-

• Driving Dynamics Regulation Switch Valve 2 -N226-

• Driving Dynamics Regulation High Pressure Switch Valve 1 -N227-

• Driving Dynamics Regulation High Pressure Switch Valve 2 -N228-

• ABS Return Flow Pump -V39-

• Brake Pressure Sensor 1 -G201- is integrated in ABS Hydraulic Unit -N55-

13 - Brake System Vacuum Pump -V192- => [ Brake System Vacuum Pump Component Overview ] See Image Below.
• Located behind the front bumper under the left head lamp

14 - Brake Light Switch -F- and Brake Pedal Switch -F47- => [ Brake Light Switch ] See Image Below.

15 - Tandem Brake Booster

16 - Brake Fluid Level Warning Switch -F34- => [ Brake Fluid Level Warning Switch ] See Image Below.

17 - ASR/ESP Button -E256-
• Located in the center console

18 - Right Front Brake Pressure Sensor -G519-
• Located on the brake pipe distributor inside the engine compartment

19 - Left Front Brake Pressure Sensor -G518-
• Located on the brake pipe distributor inside the engine compartment


ESP Sensor Unit






1 - Connector to ESP Sensor Unit -G419-
- Located at the front of the tunnel under the air conditioner

Steering Angle Sensor






1 - Steering Angle Sensor -G85-

Rear Speed Sensor






2 - Right Rear ABS Wheel Speed Sensor -G44- or Left Rear ABS Wheel Speed Sensor -G46-

Front Speed Sensor






1 - Right Front ABS Wheel Speed Sensor -G45- or Left Front ABS Wheel Speed Sensor -G47-

Brake System Vacuum Pump Component
Overview






8 - Brake System Vacuum Pump -V192-
- The electrical vacuum pump is located behind the front bumper under the left head lamp

Brake Light Switch






Arrow - Brake Light Switch -F- and Brake Pedal Switch -F47-

Brake Fluid Level Warning Switch






2 - Brake Fluid Level Warning Switch -F34-

Brake Booster Pressure Sensor






1 - Brake Booster Pressure Sensor -G294- connector
- Component location: in plenum chamber on brake booster