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HOMESERVICE MANUALSAUDI2025A4 QUATTRO PRESTIGEREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALWIRING DIAGRAMSOEM WIRING DIAGRAMS MULTIFUNCTION STEERING WHEELOEM WIRING DIAGRAMS MULTIFUNCTION STEERING WHEELWINDSHIELD WIPER SWITCH, TURN SIGNAL SWITCH, WINDSHIELD WIPER INTERMITTENT MODE SWITCH, CRUISE CONTROL SWITCH, STEERING COLUMN ELECTRONICS CONTROL MODULE, DATA BUS ON BOARD DIAGNOSTIC INTERFACE, FUSE PANEL C
2025 Audi A4 Quattro Prestige

Windshield Wiper Switch, Turn Signal Switch, Windshield Wiper Intermittent Mode Switch, Cruise Control Switch, Steering Column Electronics Control Module, Data Bus On Board Diagnostic Interface, Fuse Panel C

2025 Audi A4 Quattro PrestigeSECTION Windshield Wiper Switch, Turn Signal Switch, Windshield Wiper Intermittent Mode Switch, Cruise Control Switch, Steering Column Electronics Control Module, Data Bus On Board Diagnostic Interface, Fuse Panel C
GWW8WH-054020424Courtesy of AUDI OF AMERICA, LLC

E 

Windshield Wiper Switch

E2 

Turn Signal Switch

E22 

Windshield Wiper Intermittent Mode Switch

E45 

Cruise Control Switch

G85 

Steering Angle Sensor

J527 

Steering Column Electronics Control Module

J533 

Data Bus on Board Diagnostic Interface

J623 

Engine/Motor Control Module

SC 

Fuse Panel C

SC12 

Fuse 12 (On Fuse Panel C)

SC16 

Fuse 16 (On Fuse Panel C)

T17c 

17-Pin Connector, Yellow

T17g 

17-Pin Connector, Blue

T17gx 

17-Pin Connector, Blue

T17h 

17-Pin Connector, White

T17hx 

17-Pin Connector, White

T54 

54-Pin Connector, Black

T91 

91-Pin Connector, Black

TALU 

Coupling Point on Left A-Pillar, Bottom

379 

Ground Connection 14 (in Main Wiring Harness)

687 

Ground Connection 1 on Center Tunnel

* 

For Vehicles with Cruise Control System

*2 

Refer to Applicable Engine Wiring Diagram

*3 

Refer to Applicable Wiring Diagram for Fuse Positions

*4 

Data Bus Wire (Flexray Bus)

*5 

Steering Wheel Heating with Multifunction Steering Wheel

RENDER: 1.0x

NO RELATED

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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.