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.
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HOMESERVICE MANUALSAUDI2025A4 QUATTRO PRESTIGEREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALCOMPONENT LOCATIONSCOMPONENT LOCATIONS: CONTROL MODULES IN MIDDLE PART OF VEHICLECOMPONENT LOCATIONS: CONTROL MODULES IN MIDDLE PART OF VEHICLEHEATER CONTROL MODULE -J65- COMPONENT LOCATION AND CONNECTOR END VIEWPIN ARRANGEMENTS HEATER CONTROL MODULE -J65- (9AC)
2025 Audi A4 Quattro Prestige
Pin Arrangements Heater Control Module -J65- (9AC)
2025 Audi A4 Quattro PrestigeSECTION Pin Arrangements Heater Control Module -J65- (9AC)
| -T20p- (B) | Designation | -T16j- (A) | Designation | |
|---|---|---|---|---|
| 1 | 1 | LIN-Bus, Rear Temperature Regulator Flap Motor -V137- | ||
| 2 | Data Bus On Board Diagnostic Interface -J533- | 2 | Rear Temperature Regulator Flap Motor -V137- Left Temperature Flap Motor -V158- Left Side Vent Motor -V299- Defroster Flap Motor -V107- Right Side Vent Motor -V300- Right Temperature Flap Motor -V159- Rear air distribution door motor -V427- Fresh air door motor -V438- Recirculation Flap Motor -V113- | |
| 3 | Data Bus On Board Diagnostic Interface -J533- | 3 | Rear Temperature Regulator Flap Motor -V137- Left Temperature Flap Motor -V158- Left Side Vent Motor -V299- Defroster Flap Motor -V107- Right Side Vent Motor -V300- Right Temperature Flap Motor -V159- Rear air distribution door motor -V427- Fresh air door motor -V438- Recirculation Flap Motor -V113- | |
| 4 | LIN-Bus | 4 | Evaporator Vent Temperature Sensor -G263- | |
| 5 | 5 | Left Footwell Vent Temperature Sensor -G261- | ||
| 6 | Sunlight Photo Sensor -G107- | 6 | Right Footwell Vent Temperature Sensor -G262- | |
| 7 | Sunlight Photo Sensor -G107- | 7 | ||
| 8 | Sunlight Photo Sensor -G107- | 8 | ||
| 9 | Sunlight Photo Sensor -G107- | 9 | Left Footwell Vent Temperature Sensor -G261- Right Footwell Vent Temperature Sensor -G262- Evaporator Vent Temperature Sensor -G263- | |
| 10 | 10 | |||
| 11 | 11 | |||
| 12 | 12 | |||
| 13 | 13 | |||
| 14 | 14 | |||
| 15 | 15 | |||
| 16 | Humidity Sensor in Fresh Air Intake Duct -G657- | 16 | ||
| 17 | ||||
| 18 | ||||
| 19 | Terminal 31 | |||
| 20 | Terminal 30 |
RENDER: 1.0x
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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.