Connection Diagram - Coolant Hoses
WARNING: This page is about a different car, the 2012 Audi Q5, 2011 Audi Q5, 2010 Audi Q5, and 2009 Audi Q5. 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.
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.
Vehicles without Auxiliary Heater
NOTE:
The arrows show the coolant flow direction.
- Radiator
- Change the coolant after replacing
- Coolant Pump
- Engine Coolant Temperature Sensor -G62-
- Coolant Thermostat
- Coolant Recirculation Pump -V50-
- Activated by the Recirculation Pump Relay -J160-
- Removing and installing, refer to COMPONENT GROUP "3" .
- Cylinder Head and Cylinder Block
- Change the coolant after replacing
- Coolant Shut-Off Valve
- Is activated by the Climatronic Refrigerant Shut-Off Valve -N422-
- The Climatronic Refrigerant Shut-Off Valve -N422- is activated by the Climatronic Control Module -J255-.
- Removing and installing, refer to COMPONENT GROUP "1" .
- Bleeder Hole
- Heater Core for Heater
- Removing and installing, refer to HEATER CORE, REMOVING AND INSTALLING .
- Change the coolant after replacing
- Coolant Reservoir Cap
- Checking the pressure relief valve, refer to COOLING SYSTEM, CHECKING FOR LEAKS - "Pressure Relief Valve in Cap, Checking" (See Figure).
- Coolant Expansion Tank
- Engine Oil Cooler
- Change the coolant after replacing
- After-Run Coolant Pump -V51-
- Vehicles for countries with warm climates
- Check Valve
- Check Valve
Vehicles with Parking Heater
NOTE:
The arrows show the coolant flow direction.
- Radiator
- Change the coolant after replacing
- Coolant Pump
- Engine Coolant Temperature Sensor -G62-
- Coolant Thermostat
- Parking Heater
- With Recirculation Pump -V55-
- Removing and installing, refer to COMPONENT GROUP "3"
.
For vehicles with a "parking heater", the Recirculation Pump -V55- assumes the function of the Coolant Recirculation Pump -V50- (the Water Pump -V36-).
- Cylinder Head and Cylinder Block
- Change the coolant after replacing
- Climatronic Refrigerant Shut-Off Valve -N422-
- Removing and installing, refer to COMPONENT GROUP "1" .
- Bleeder Hole
- Heater Core for Heater
- Removing and installing, refer to HEATER CORE, REMOVING AND INSTALLING .
- Change the coolant after replacing
- Coolant Reservoir Cap
- Checking the pressure relief valve, refer to COOLING SYSTEM, CHECKING FOR LEAKS - "Pressure Relief Valve in Cap, Checking" (See Figure).
- Coolant Expansion Tank
- Engine Oil Cooler
- Change the coolant after replacing
- After-Run Coolant Pump -V51-
- Vehicles for countries with warm climates
- Check Valve
- Check Valve