Coolant Hose Connection Diagram, Vehicles With Parking Heater

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 Audi A6 Quattro, 2018 Audi A6, 2017 Audi A6 Quattro, 2017 Audi A6, and 2016 Audi A6 Quattro. 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.

Green = coolant circuit for ATF cooling.

Courtesy of AUDI OF AMERICA, LLC

Radiator
Exhaust Manifold
Turbocharger
Check Valve
Check Valve
Cylinder Head/Cylinder Block
Engine Coolant Temperature Sensor -G62-
Parking Heater
Heater Coolant Shut-Off Valve -N279-
Bleeder Hole
Heater Core For Heater
- Removing and installing. Refer to HEATER CORE, REMOVING AND INSTALLING .
Coolant Pump
Coolant Thermostat
- For the coolant circuit for ATF cooling
- For vehicles with a S tronic® transmission/automatic transmission
ATF Cooler
- For vehicles with a S tronic® transmission/automatic transmission
After-Run Coolant Pump -V51-
- For vehicles with a S tronic® transmission/automatic transmission
Restrictor
Cap
- Checking the pressure relief valve. Refer to CHECKING THE PRESSURE RELIEF VALVE IN THE VERSION 1 CAP and/or CHECKING THE PRESSURE RELIEF VALVE IN THE VERSION 2 CAP .
Coolant Expansion Tank
Check Valve
Engine Coolant Temperature Sensor on Radiator Outlet -G83-
Engine Temperature Control Actuator -N493-
Engine Oil Cooler