Antilock Brakes / Traction Control Systems: Locations

Component Locations: Anti-Lock Brake Systems

Electronic Stabilization Program, Bosch 5.7, Component Overview







1 ABS Hydraulic Unit -N55- with ABS Control Module -J104-
• The hydraulic control unit is comprised of the hydraulic unit and control module
• Right Front ABS Inlet Valve -N99-

• Right Front ABS Outlet Valve -N100-

• Left Front ABS Inlet Valve -N101-

• 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-

• Component location: On hydraulic unit in engine compartment, left => [ Hydraulic Unit ] See Image Below.
2 Brake Pressure Sensor 1 -G201-
• Attached to hydraulic subframe => [ Hydraulic Unit ] See Image Below.
3 ASR/ESP Button -E256-
• Component location: In center console
4 Transverse Acceleration Sensor -G200- and Rotation Rate Sensor -G202-
• Combined in one housing
• Component location: Under center console extension => [ Transverse Acceleration Sensor and Rotation Rate Sensor ] See Image Below.
5 Traction Control Indicator Lamp -K86-
• Component location: In instrument cluster
6 ABS Warning Lamp -K47-
• Component location: In instrument cluster
7 Brake System Warning Lamp -K118-
• Location in instrument cluster in Driver Information System
8 Parking Brake Pressure Switch -F234-
• Component location: In center console
9 Steering Angle Sensor -G85- with ESP
• Component location: Installed in coil ring with slip ring on steering column
10 Wheel Bearing/Hub Unit
• The ABS sensor ring is installed in wheel bearing
11 Right Rear ABS Wheel Speed Sensor -G44- / Left Rear ABS Wheel Speed Sensor -G46-
• Location view => [ Rear ABS Wheel Speed Sensor ] See Image Below.
12 Data Link Connector (DLC)
13 Brake Light Switch -F- and Brake Pedal Switch -F47-
• Location view => [ Brake Lamp Switch ] See Image Below.
14 Wheel Bearing/Hub Unit
• The ABS sensor ring is installed in wheel bearing
15 Right Front ABS Wheel Speed Sensor -G45- / Left Front ABS Wheel Speed Sensor -G47-
• Location view => [ Front ABS Wheel Speed Sensor ] See Image Below.
16 Brake Fluid Level Warning Switch -F34-
• On fluid reservoir
17 Tandem Brake Booster

Hydraulic Unit






8 - Brake Pressure Sensor 1 -G201-
9 - ABS Hydraulic Unit -N55- with ABS Control Module -J104-

Front ABS Wheel Speed Sensor






1 - ABS Wheel Speed Sensor

Rear ABS Wheel Speed Sensor






4 - ABS Wheel Speed Sensor

Brake Lamp Switch






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

Transverse Acceleration Sensor and
Rotation Rate Sensor






-ARROWS-Transverse Acceleration Sensor -G200- and Rotation Rate Sensor -G202-
Located on front tunnel under air conditioner

Brake Booster Pressure Sensor






1 - Brake Booster Pressure Sensor -G294-
3 - Brake Booster Relay -J569-
8 - Brake System Vacuum Pump -V192-