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HOMESERVICE MANUALSAUDI2025A4 ALLROAD PREMIUM PLUSREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSWIRING 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)LIN BUS CONNECTION 2 (IN INSTRUMENT PANEL WIRING HARNESS), CAN BUS EXTENDED HIGH CONNECTION 1 (IN MAIN WIRING HARNESS), CAN BUS EXTENDED LOW CONNECTION 1 (IN MAIN WIRING HARNESS), LIN BUS CONNECTION 4 (IN MAIN WIRING HARNESS)
2025 Audi A4 allroad Premium Plus

Lin Bus Connection 2 (In Instrument Panel Wiring Harness), Can Bus Extended High Connection 1 (In Main Wiring Harness), Can Bus Extended Low Connection 1 (In Main Wiring Harness), Lin Bus Connection 4 (In Main Wiring Harness)

2025 Audi A4 allroad Premium PlusSECTION Lin Bus Connection 2 (In Instrument Panel Wiring Harness), Can Bus Extended High Connection 1 (In Main Wiring Harness), Can Bus Extended Low Connection 1 (In Main Wiring Harness), Lin Bus Connection 4 (In Main Wiring Harness)
GWW868-011140424Courtesy of AUDI OF AMERICA, LLC

E265 

Rear A/C Display Control Head

G65 

High Pressure Sensor

G657 

Humidity Sensor in Fresh Air Intake Duct

G855 

Biodiesel Concentration Sensor

J65 

Heater Control Module

J126 

Fresh Air Blower Control Module

J234 

Airbag Control Module

J854 

Left Front Seat Belt Tensioner Control Module

NX10 

Left Front Seat Belt

T3bc 

3-Pin Connector, Black

T3bd 

3-Pin Connector, Black

T3ds 

3-Pin Connector, Black

T4bc 

4-Pin Connector, Black

T4dr 

4-Pin Connector, Black

T5s 

5-Pin Connector, Naturally Cloudy

T8n 

8-Pin Connector, Black

T20p 

20-Pin Connector, Black

T96 

96-Pin Connector, Yellow

V562 

Instrument Panel Vent Motor

A227 

LIN Bus Connection 2 (in Instrument Panel Wiring Harness)

B108 

CAN Bus Extended High Connection 1 (in Main Wiring Harness)

B109 

CAN Bus Extended Low Connection 1 (in Main Wiring Harness)

B699 

LIN Bus Connection 4 (in Main Wiring Harness)

* 

Refer to Applicable A/C System Wiring Diagram

*2 

Depending on Equipment

*3 

Data Bus Wire (CAN Bus)

*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.