Overview - Electronic Stabilization Program (ESP)

Fig 1: Identifying Electronic Stabilization Program (ESP) Overview

Courtesy of AUDI OF AMERICA, LLC

1. Right Rear ABS Wheel Speed Sensor -G44-
   • Can be tested with the Vehicle Diagnostic Tester.
   • Refer to REAR ABS WHEEL SPEED SENSORS -G44- / -G46-, REMOVING AND INSTALLING 
2. Left Rear ABS Wheel Speed Sensor -G46-
   • Can be tested with the Vehicle Diagnostic Tester.
   • Refer to REAR ABS WHEEL SPEED SENSORS -G44- / -G46-, REMOVING AND INSTALLING 
3. Sensor Electronics Control Module -J849-
   • Combined in one housing
   • Component location: under the center console extension
   • Can be tested with the Vehicle Diagnostic Tester

     Refer to SENSOR ELECTRONICS CONTROL MODULE -J849-, REMOVING AND INSTALLING 

4. Brake Lamp Switch -F-
   • Installed location: on the brake pedal
   • Can be tested with the Vehicle Diagnostic Tester.
   • Refer to BRAKE LAMP SWITCH -F-, REMOVING AND INSTALLING 

     Cannot be reused after removal.

5. Brake Pedal
   • With a mount for the brake lamp switch
   • Refer to BRAKE PEDAL, REMOVING AND INSTALLING, VEHICLES WITH AUTOMATIC TRANSMISSION
6. Diagnostic Connection
   • Component location: driver side footwell cover
7. Left Front ABS Wheel Speed Sensor -G47-
   • Can be tested with the Vehicle Diagnostic Tester.
   • Refer to FRONT ABS WHEEL SPEED SENSORS -G45- / -G47-, REMOVING AND INSTALLING 
8. ABS Hydraulic Unit -N55- with ABS Control Module with EDS -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). Turn off the ignition before disconnecting the connector.
   • Component location: on the hydraulic unit inside the engine compartment on the left side and in the front
   • Refer to HYDRAULIC UNIT WITH CONTROL MODULE, REMOVING AND INSTALLING 
9. Steering Angle Sensor -G85-
   • The Airbag Spiral Spring/Return Spring with Slip Ring -F138- and the Steering Angle Sensor -G85- are integrated in the Steering Column Electronics Control Module -J527-. .
   • Refer to STEERING ANGLE SENSOR -G85-, REMOVING AND INSTALLING 
10. Return Ring
11. Right Front ABS Wheel Speed Sensor -G45-
    • Can be tested with the Vehicle Diagnostic Tester.
    • Removing and installing. Refer to FRONT ABS WHEEL SPEED SENSORS -G45- / -G47-, REMOVING AND INSTALLING .
12. -AUTO HOLD- Button -E540-
    • Located in the center console
    • Refer to HILL START 
    • Refer to -AUTO HOLD- BUTTON -E540-, REMOVING AND INSTALLING 
13. Parking Brake Contact Switch -F321-
    • Installed location: in the center console
    • Refer to PARKING BRAKE CONTACT SWITCH -F321-, REMOVING AND INSTALLING 

Diagnostic Connection