Coolant Hose Connection Diagram
WARNING: This page is about a different car, the 2012 Audi S5, 2011 Audi S5, and 2010 Audi S5. However, it is still accessible from the selected car via links, so may be relevant.
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.
Danger of personal injury due to the coolant fan turning 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.
Vehicles without Auxiliary Heater
- Front Charge Air Cooling Circuit Radiator
- Change coolant after replacing
- Radiator
- Vehicles with dual clutch transmission: With integrated ATF cooler
- Change coolant after replacing
- Coolant Temperature Sensor -G62-
- Coolant Thermostat
- Coolant pump
- Charge Air Cooler on the Right Side
- inside the compressor housing
- change coolant after replacing
- Coolant Switch-Off Valve
- is controlled by the auxiliary heater exhaust gas sensor -N422-
- The auxiliary heater exhaust gas sensor -N422- is controlled by the Climatronic control module -J255-.
- Removing and installing, refer to COOLANT SHUT-OFF VALVE -N82- /CLIMATRONIC COOLANT SHUT-OFF VALVE -N422- LOCATION, ACTIVATION AND FUNCTION
- Bleeder Screw
- Cylinder Head Bank 1 (right)
- change coolant after replacing
- Heat Exchanger for Heater Unit
- Removing and installing, refer to the appropriate Service Information
- change coolant after replacing
- Bleeder Hole
- Cylinder Head Bank 2 (left)
- change coolant after replacing
- Bleeder Screw
- Left Charge Air Cooler
- Inside the compressor housing
- Change coolant after replacing
- Coolant Reservoir Cap
- Pressure relief valve, checking. Refer to PRESSURE RELIEF VALVE IN CAP, CHECKING
- Coolant Reservoir
- Engine Oil Cooler
- After-Run Coolant Pump -V51-
- Depending on country
- Non-Return Valve
- In the coolant hose
- Charge Air Coolant Pump -V188-
- Left Charge Air Cooling Circuit Radiator
- change coolant after replacing
- Non-Return Valve
- In the coolant hose
- Non-Return Valve
- In the coolant hose