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 ALLROAD PREMIUM PLUSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEFUEL DELIVERYFUEL SUPPLY SYSTEM
2025 Audi A4 allroad Premium Plus
Fuel Supply System
2025 Audi A4 allroad Premium PlusSECTION Fuel Supply System
- 20 Fuel Supply System
- Fuel Tank
- Overview - Fuel Tank
- Overview - Fuel Tank, TFSI Fwd Vehicles Rest Of World Market Version (Not For North AMERICA Market)
- Overview - Fuel Tank, TFSI AWD Vehicles Rest Of World Market Version (Not For North AMERICA Market)
- Overview - Fuel Tank, TFSI Vehicles With Fwd/AWD North AMERICAN And China Market-Specific Version
- Overview - Fuel Tank, TDI Vehicles Rest Of World Market Version (Not For North AMERICA Market) [DETA, DEUA, DEUB, CZHA, DESA, DEUC, CRTC, CSWB, CVKB, CVNA, CYMC, CYRB, CYRC, DETB, DBPA, CWNA, CWPB, DCPC, CWGD, DEMA, DHDA, DDWA, DECA, DEZB, DEZE, DCPE, DKNA, DLVA, DLVB, DKUA, DKUB, DKWA, DKYA, DLHB, DFBA, DEWB, CVKC, DDWB, DEMB, DMSA, DMSB, DMTA, DPAA, DTAA, DTAB, DMGA, DTNA, DTNB, DTPA, DMKC, DTKA, DTGA, DTGB, DECC]
- Overview - Fuel Tank, TDI Vehicles With AWD North AMERICAN Market-Specific Version (Not For North AMERICA Market)
- Fuel Tank, Draining
- Fuel Tank, Removing And Installing
- MISFUELING Guard, Removing And Installing (Not For North AMERICA Market)
- MISFUELING Guard, Deactivating (Not For North AMERICA Market)
- Overview - Fuel Tank
- Fuel Delivery Unit/Fuel Level Sensor
- Overview - Fuel Delivery Unit/Fuel Level Sensor
- Overview - Fuel Delivery Unit/Fuel Level Sensor, TFSI Vehicles Rest Of World Market-Specific Version (Not For North AMERICA Market)
- Overview - Fuel Delivery Unit/Fuel Level Sensor, TFSI Vehicles North AMERICAN Market-Specific Version
- Overview - Fuel Delivery Unit/Fuel Level Sensor, All TDI Vehicles (Not For North AMERICA Market)
- Fuel Delivery Unit/Fuel Level Sensor, Removing And Installing
- Fuel Line To Metering Pump, Bleeding
- Fuel Level Sensor -G-, REMOVING AND INSTALLING
- Overview - Fuel Delivery Unit/Fuel Level Sensor
- Connector Couplings
- EVAP System
- Connection Diagram - EVAP System
- Overview - EVAP System
- EVAP Canister, Removing And Installing
- Fuel Tank Pressure Sensor -G400-, REMOVING AND INSTALLING
- Fuel Tank Leak Detection Control Module -J909-, REMOVING AND INSTALLING
- Fuel Tank Leak Detection Function
- Fuel System, Checking For Leaks, North AMERICA, KOREA And China Market-Specific Version
- Fuel Filter (Not For North AMERICA Market)
- Accelerator Mechanism
- Fuel Pump
- Fuel Tank
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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.