Antilock Brakes / Traction Control Systems: Locations

Component Locations: Anti-Lock Brake Systems

ABS/Electronic Stabilization Program Component Overview


Component A and B are not shown in the overview





A - ESP Sensor Unit 2 -G536-
• Located under the left seat by the ESP Sensor Unit -G419- => [ ESP Sensor Unit ] See Image Below.

B - Brake Fluid Level Warning Switch -F34-
• Located in the master cylinder reservoir

1 - Right Rear ABS Wheel Speed Sensor -G44- => [ Rear Wheel Speed Sensors ] See Image Below.

2 - Left Rear ABS Wheel Speed Sensor -G46- => [ Rear Wheel Speed Sensors ] See Image Below.

3 - ESP Sensor Unit -G419-
• Located under the left seat by the ESP Sensor Unit 2 -G536-
ESP Sensor Unit -G419- is integrated with the following: => [ ESP Sensor Unit ] See Image Below.
• Transverse Acceleration Sensor -G200-

• Rotation Rate Sensor -G202-

• Longitudinal Acceleration Sensor -G251-


4 - Brake Light Switch -F-
• Integrated with Brake Pedal Switch -F47-
• Located on the brake pedal

5 - Brake pedal
• With bracket for the Brake Light Switch -F-

6 - Electro-Mechanical Parking Brake Indicator Lamp
• Located in the tachometer

7 - Brake system warning lamp
• Located in the tachometer

8 - ABS warning lamp
• Located in the tachometer
• The indicator lamp monitors the ABS and the Electronic Differential Lock (EDL)

10 - Left Front ABS Wheel Speed Sensor -G47- => [ Front Wheel Speed Sensors ] See Image Below.

Cont.,





11 - ABS Control Module -J104- with ABS Hydraulic Unit -N55-
• Located on the left of the engine compartment
• The components must not be separated from each other
The hydraulic control unit includes the following:
• ABS Hydraulic Unit -N55- with Brake Pressure Sensor 1 -G201-

• ABS Control Module -J104- with ABS Hydraulic Pump -V64-

• Valve block (contains the inlet/outlet valves).


12 - Airbag Spiral Spring/Return Spring With Slip Ring -F138-
• Installed on the steering column with the slip ring => [ Steering Angle Sensor ] See Image Below.

13 - Steering Angle Sensor -G85- => [ Steering Angle Sensor ] See Image Below.

14 - Right Front ABS Wheel Speed Sensor -G45- => [ Front Wheel Speed Sensors ] See Image Below.

15 - ASR/ESP Button -E256-
• Location of the switch depends on the model

16 - Audi Hold Assist pressure switch
• Located in the center console

17 - Parking Brake Pressure Switch -F234-
• Located in the center console

18 - Data Link Connector (DLC)
• Located in the driver footwell

19 - Roof Rack Recognition Sensor -G625-
• The roof rack recognition sensor -G625- is always installed in the left roof railing => [ Roof Rack Recognition Sensor ] See Image Below.
• The sensor cannot be replaced by itself. It is part of the left roof railing


Brake booster vacuum pump -V469-






1 - Brake booster vacuum pump -V469-
2 - Connector for Brake booster vacuum pump -V469-

ESP Sensor Unit






1 - ESP Sensor Unit -G419-
3 - ESP Sensor Unit 2 -G536-

Rear Wheel Speed Sensors






1 - Right Rear ABS Wheel Speed Sensor -G44- and Left Rear ABS Wheel Speed Sensor -G46-

Front Wheel Speed Sensors






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

Steering Angle Sensor






1 - Steering Column Electronic Systems Control Module -J527-
With the Airbag Spiral Spring/Return Spring With Slip Ring -F138- and Steering Angle Sensor -G85-

Roof Rack Recognition Sensor






2 - Roof Rack Recognition Sensor -G625-

Brake booster pressure sensor -G294-