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HOMESERVICE MANUALSAUDI2025A4 QUATTRO PRESTIGEREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALWIRING DIAGRAMSOEM WIRING DIAGRAMS DATA BUS ON BOARD DIAGNOSTIC INTERFACE AND DIAGNOSTIC LINK CONNECTOR (DLC)OEM WIRING DIAGRAMS DATA BUS ON BOARD DIAGNOSTIC INTERFACE AND DIAGNOSTIC LINK CONNECTOR (DLC)DATA BUS ON BOARD DIAGNOSTIC INTERFACE, INFOTAINMENT CAN BUS HIGH CONNECTION (IN INSTRUMENT PANEL WIRING HARNESS), INFOTAINMENT CAN BUS LOW CONNECTION (IN INSTRUMENT PANEL WIRING HARNESS), COMFORT SYSTEM CAN BUS, HIGH CONNECTION 2 (IN MAIN WIRING HARNESS), COMFORT SYSTEM CAN BUS, LOW CONNECTION 2 (IN MAIN WIRING HARNESS)
2025 Audi A4 Quattro Prestige

Data Bus On Board Diagnostic Interface, Infotainment Can Bus High Connection (In Instrument Panel Wiring Harness), Infotainment Can Bus Low Connection (In Instrument Panel Wiring Harness), Comfort System Can Bus, High Connection 2 (In Main Wiring Harness), Comfort System Can Bus, Low Connection 2 (In Main Wiring Harness)

2025 Audi A4 Quattro PrestigeSECTION Data Bus On Board Diagnostic Interface, Infotainment Can Bus High Connection (In Instrument Panel Wiring Harness), Infotainment Can Bus Low Connection (In Instrument Panel Wiring Harness), Comfort System Can Bus, High Connection 2 (In Main Wiring Harness), Comfort System Can Bus, Low Connection 2 (In Main Wiring Harness)
GWW868-011060424Courtesy of AUDI OF AMERICA, LLC

E313 

Selector Lever

J386 

Driver Door Control Module

J533 

Data Bus on Board Diagnostic Interface, Under the Center Rear Seat

J587 

Selector Lever Sensor System Control Module

J764 

Electronic Steering Column Lock Control Module

T4tl 

4-Pin Connector, Black

T4x 

4-Pin Connector, Black

T10g 

10-Pin Connector, Black

T17f 

17-Pin Connector, Red

T17fx 

17-Pin Connector, Red

T20l 

20-Pin Connector, White

T28a 

28-Pin Connector, Black

T28ax 

28-Pin Connector, Black

T54 

54-Pin Connector, Black

TALU 

Coupling Point on Left A-Pillar, Bottom

TTIVL 

Coupling Point in Left Front Door

TTVL 

Left Front Door Coupling Point

A178 

Infotainment CAN Bus High Connection (in Instrument Panel Wiring Harness), Near the Rear Bench Seat

A179 

Infotainment CAN Bus Low Connection (in Instrument Panel Wiring Harness), Near the Rear Bench Seat

B398 

Comfort System CAN Bus, High Connection 2 (in Main Wiring Harness)

B407 

Comfort System CAN Bus, Low Connection 2 (in Main Wiring Harness)

* 

Refer to Applicable Convenience System Wiring Diagram

*2 

For Vehicles with Auxiliary Lamps

*3 

For Vehicles with Panorama Sunroof

*4 

Different Wire Color Possible

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.