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)QUICK LOOKUPSELECTRICAL COMPONENT LOCATIONSCOMPONENT LOCATIONS: CONTROL MODULES IN MIDDLE PART OF VEHICLECOMPONENT LOCATIONS: CONTROL MODULES IN MIDDLE PART OF VEHICLEDATA BUS ON BOARD DIAGNOSTIC INTERFACE -J533- COMPONENT LOCATION AND CONNECTOR END VIEWDATA BUS ON BOARD DIAGNOSTIC INTERFACE -J533-, WITHOUT EMERGENCY CALL FUNCTION (IW0), THROUGH JUNE 2019NOTES
2025 Audi A4 Quattro Prestige
Data Bus On Board Diagnostic Interface -J533-, WITHOUT EMERGENCY CALL FUNCTION (IW0), THROUGH JUNE 2019: Notes
2025 Audi A4 Quattro PrestigeSECTION Notes
Component Location
Near rear seat bench.
Fig 1: Data Bus On Board Diagnostic Interface -J533- Component Location And Connector End View (Without Emergency Call Function (IW0), Through June 2019)
- 1 - Data Bus On Board Diagnostic Interface -J533-
- A - 54-Pin Connector -T54-, black
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.