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Home >> Audi >> 2017 >> A3 Premium, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 62 (COOLING SYSTEM [4-Cylinder Direct Injection 1.8L; 2.0L 4V TFSI] -- (A3)) >> 19 Cooling System >> Coolant System/Coolant >> Connection Diagram - Coolant Hoses >> Connection Diagram - Coolant Hoses, Vehicles With Auxiliary Radiator And Transmission Fluid Cooler

Connection Diagram - Coolant Hoses, Vehicles With Auxiliary Radiator And Transmission Fluid Cooler

WARNING: This page is about a different car, the 2016 Audi A3 and 2015 Audi A3. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Blue  = large coolant circuit.

Red  = small coolant circuit.

Brown  = heating circuit.

Yellow  = transmission fluid cooling circuit.

The arrows show the coolant flow direction.

Fig 1: Connection Diagram - Coolant Hoses, Vehicles With Auxiliary Radiator And Transmission Fluid Cooler
GWWA19-11928Courtesy of AUDI OF AMERICA, LLC
  1. Radiator
    • Change the coolant after replacing
  2. Auxiliary Cooler
    • Depending on vehicle equipment
  3. Engine Coolant Temperature Sensor on Radiator Outlet -G83-
  4. Engine Temperature Control Actuator -N493-
  5. Cylinder Head/Cylinder Block
    • Change the coolant after replacing
  6. Restrictor
  7. Coolant Expansion Tank
  8. Coolant Expansion Tank Cap
  9. Check Valve
  10. Exhaust Manifold
    • Integrated in cylinder head
  11. Turbocharger
  12. Heater Core for the Heater
    • Change the coolant after replacing
  13. Restrictor
  14. Check Valve
  15. After-Run Coolant Pump -V51-
  16. Engine Coolant Temperature Sensor -G62-
  17. Coolant Shut-Off Valve -N82-
  18. Restrictor
  19. Coolant Pump
  20. Transmission Fluid Cooler
  21. Coolant Shut-Off Valve -N82-
  22. Check Valve
  23. Auxiliary Cooler
    • For transmission fluid cooling circuit