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Home >> Audi >> 2016 >> S6 Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 598 (3.0L - Cooling System - Engine Code(S): CCBA, CGXC & CTUB (Sedan)) >> 19 Cooling System >> Coolant System/Coolant >> Connection Diagram - Coolant Hoses

Connection Diagram - Coolant Hoses

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WARNING:

Risk of scalding due to hot steam and hot coolant.

  • The coolant system is under pressure when the engine is warm.
  • Cover the coolant reservoir cap with a cloth and then open it slowly to release the pressure.

There is a risk of injury if the radiator fan turns on by itself.

  • Disconnect the connectors before working near the fan shroud.
NOTE:

Secure all hose connections with hose clamps of the same type as those equipped by the factory.

The arrows on the coolant pipes and ends of coolant hoses must align.

NOTE:

Blue = large coolant circuit.

Red = small coolant circuit.

Orange = coolant circuit for the charge air cooler.

Brown = heating circuit.

The arrows show the coolant flow direction.

A5 through MY 2011, A4 through MY 2012 without Parking Heater 

Fig 1: A5 through MY 2011, A4 through MY 2012 without Parking Heater Components Location
GWWA19-10867Courtesy of AUDI OF AMERICA, LLC
  1. Front Charge Air Cooling Circuit Radiator
    • Change the coolant after replacing
  2. Radiator
    • Vehicles with a S tronic transmission: with integrated ATF cooler
    • Change the coolant after replacing
  3. Engine Coolant Temperature Sensor -G62-
  4. Coolant Thermostat
  5. Coolant Pump
  6. Right Charge Air Cooler
    • Inside the supercharger housing
    • Change the coolant after replacing
  7. Coolant Shut-Off Valve
  8. Bleed Screw
  9. Cylinder Head Bank 1 (Right)
    • Change the coolant after replacing
  10. Heater Core for Heater
  11. Bleeder Hole
  12. Cylinder Head Bank 2 (Left)
    • Change the coolant after replacing
  13. Bleeder Screw
  14. Left Charge Air Cooler
    • Inside the compressor housing
    • Change the coolant after replacing
  15. Coolant Reservoir Cap
  16. Coolant Expansion Tank
  17. Engine Oil Cooler
  18. After-Run Coolant Pump -V51-
    • Market-specific
  19. Check Valve
    • Inside the coolant hose
  20. Charge Air Cooling Pump -V188-
  21. Left Charge Air Cooling Circuit Radiator
    • Change the coolant after replacing
  22. Check Valve
    • Inside the coolant hose
  23. Check Valve
    • Inside the coolant hose

A5 through MY 2011, A4 through MY 2012 with Parking Heater 

Fig 2: A5 Through MY 2011, A4 Through MY 2012 With Parking Heater Components Location
GWWA19-10868Courtesy of AUDI OF AMERICA, LLC
  1. Front Charge Air Cooling Circuit Radiator
    • Change the coolant after replacing
  2. Radiator
    • Vehicles with a S tronic transmission: with integrated ATF cooler
    • Change the coolant after replacing
  3. Engine Coolant Temperature Sensor -G62-
  4. Parking Heater
  5. Coolant Thermostat
  6. Coolant Pump
  7. Right Charge Air Cooler
    • Inside the compressor housing
    • Change the coolant after replacing
  8. Bleeder Screw
  9. Climatronic Refrigerant Shut-Off Valve -N422-
  10. Cylinder Head Bank 1 (Right)
    • Change the coolant after replacing
  11. Heater Core for Heater
  12. Bleeder Hole
  13. Cylinder Head Bank 2 (Left)
    • Change the coolant after replacing
  14. Bleeder Screw
  15. Left Charge Air Cooler
    • Inside the compressor housing
    • Change the coolant after replacing
  16. Coolant Reservoir Cap
  17. Coolant Expansion Tank
  18. Engine Oil Cooler
  19. After-Run Coolant Pump -V51-
    • Market-specific
  20. Check Valve
    • Inside the coolant hose
  21. Charge Air Cooling Pump -V188-
  22. Left Charge Air Cooling Circuit Radiator
    • Change the coolant after replacing
  23. Check Valve
    • Inside the coolant hose
  24. Check Valve
    • Inside the coolant hose

A5 from MY 2012, A4 from MY 2013 without Parking Heater 

Fig 3: A5 From MY 2012, A4 From MY 2013 Without Parking Heater Components Locations
GWWA19-11658Courtesy of AUDI OF AMERICA, LLC
  1. Front Charge Air Cooling Circuit Radiator
    • Change the coolant after replacing
  2. Radiator
    • With ATF cooler
    • Change the coolant after replacing
  3. Engine Coolant Temperature Sensor -G62-
  4. Coolant Thermostat
  5. Coolant Pump
  6. Right Charge Air Cooler
    • Inside the compressor housing
    • Change the coolant after replacing
  7. Bleed Screw
  8. Cylinder Head
    • Cylinder bank 1 (right)
    • Change the coolant after replacing
  9. Bleed Screw
  10. Heater Core for Heater
  11. Coolant Recirculation Pump -V50-
  12. Engine Temperature Control Sensor -G694-
  13. Cylinder Head
    • Cylinder bank 2 (left)
    • Change the coolant after replacing
  14. Bleeder Screw
  15. Left Charge Air Cooler
    • Inside the compressor housing
    • Change the coolant after replacing
  16. Cap
  17. Coolant Expansion Tank
  18. Engine Oil Cooler
    • Change the coolant after replacing
  19. Check Valve
    • Inside the coolant hose
  20. Check Valve
    • Inside the coolant hose
  21. Check Valve
    • Inside the coolant hose
  22. Left Charge Air Cooling Circuit Radiator
    • Equipment may differ depending on version
    • Change the coolant after replacing
  23. Charge Air Cooling Pump -V188-

A5 from MY 2012, A4 from MY 2013 with Parking Heater 

Fig 4: A5 From MY 2012, A4 From MY 2013 With Parking Heater Components Location
GWWA19-11659Courtesy of AUDI OF AMERICA, LLC
  1. Front Charge Air Cooling Circuit Radiator
    • Change the coolant after replacing
  2. Radiator
    • with ATF cooler
    • Change the coolant after replacing
  3. Engine Coolant Temperature Sensor -G62-
  4. Coolant Thermostat
  5. Parking Heater
  6. Coolant Pump
  7. Right Charge Air Cooler
    • Inside the compressor housing
    • Change the coolant after replacing
  8. Bleed Screw
  9. Cylinder Head
    • Cylinder bank 1 (right)
    • Change the coolant after replacing
  10. Heater Coolant Shut-Off Valve -N279-
  11. Bleeder Screw
  12. Heater Core for Heater
  13. Engine Temperature Control Sensor -G694-
  14. Cylinder Head
    • Cylinder bank 2 (left)
    • Change the coolant after replacing
  15. Bleeder Screw
  16. Left Charge Air Cooler
    • Inside the supercharger housing
    • Change the coolant after replacing
  17. Cap
  18. Coolant Expansion Tank
  19. Engine Oil Cooler
    • Change the coolant after replacing
  20. Check Valve
    • Inside the coolant hose
  21. Check Valve
    • Inside the coolant hose
  22. Check Valve
    • Inside the coolant hose
  23. Left Charge Air Cooling Circuit Radiator
    • Equipment may differ depending on version
    • Change the coolant after replacing
  24. Charge Air Cooling Pump -V188-