Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2015 Audi S7FACTORY OEM SERVICE PROCEDURE
Overview - Electronic Stabilization Program (Esp)
- 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
- 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
- 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
- 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.
- Brake Pedal
- With a mount for the brake lamp switch
- Refer to BRAKE PEDAL, REMOVING AND INSTALLING, VEHICLES WITH AUTOMATIC TRANSMISSION
- Diagnostic Connection
- Component location: driver side footwell cover
- 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
- 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
- Refer to HYDRAULIC UNIT WITH CONTROL MODULE, REMOVING AND INSTALLING, HYBRID VEHICLES NOTE: To remove, remove the coolant reservoir.
- 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 Exterior Lights, Lamps and Switches .
- Refer to Steering Angle Sensor -G85-, REMOVING AND INSTALLING
- Return Ring
- 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 .
- -AUTO HOLD- Button -E540-
- Located in the center console
- Refer to HILL START
- Refer to -AUTO HOLD- Button -E540-, REMOVING AND INSTALLING
- Parking Brake Contact Switch -F321-
- Installed location: in the center console
- Refer to Parking Brake Contact Switch -F321-, REMOVING AND INSTALLING
Diagnostic Connection
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.