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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> Fuel Supply >> 20 Fuel Supply >> Fuel Delivery Unit/Fuel Level Sensor >> Overview - Fuel Delivery Unit/Fuel Level Sensor >> Overview - Fuel Delivery Unit/Fuel Level Sensor, All TDI Vehicles

Overview - Fuel Delivery Unit/Fuel Level Sensor, All TDI Vehicles

Fig 1: Exploded View Of Fuel Delivery Unit/Fuel Level Sensor, All TDI Vehicles
GWWA20-11528Courtesy of AUDI OF AMERICA, LLC
  1. Fuel Level Sensor
  2. Fuel Supply Line
    • To the fuel filter
    • Clipped to the fuel tank
    • Do not kink
    • To disconnect, press the release button on the connecting piece
    • Connector Couplings, Separating and Connecting. Refer to CONNECTOR COUPLINGS, DISCONNECTING .
  3. Fuel Return Line
    • From the engine
    • Clipped to the fuel tank
    • Do not kink
    • Press the release button on the connecting piece to remove from the sealing flange
    • Connector Couplings, Separating and Connecting. Refer to CONNECTOR COUPLINGS, DISCONNECTING .
  4. Connector
    • For Fuel Pump Control Module -J538-
    • Make sure it is attached securely
  5. Fuel Pump Control Module -J538-
  6. Sealing Flange Cover
  7. Bolt
    • 1.5 Nm
    • Quantity: 3
  8. Fuel Line to Parking Heater Metering Pump
  9. Connector
    • Country/equipment versions
    • To the metering pump for the parking heater
    • Make sure it is attached securely
  10. Locking Ring
    • 110 Nm
    • Loosen and tighten using the Wrench - Fuel Sending Unit :T10202 
  11. Gasket
    • Replace after removing
    • Install dry
  12. Wiring Harness
    • For Transfer Fuel Pump -G6-, Fuel Gauge Sensor -G- and Fuel Gauge Sensor 2 -G169-
    • Make sure it is attached securely
  13. Fuel Delivery Unit