With a 4/2 Way Valve and Thermostat

With a 4/2 Way Valve and Thermostat






1 Coolant Expansion Tank

• With the cap.

• Pressure relief valve in cap, checking. Refer to => [ Pressure Relief Valve in Cap, Checking ] Testing and Inspection.

2 Cylinder Head/Cylinder Block

• Change the coolant after replacing.

3 Exhaust Gas Recirculation (EGR) Cooler

• Change the coolant after replacing.

• Assembly overview, refer to => [ Exhaust Gas Recirculation System Component Overview ] Service and Repair.

4 Auxiliary Heater

• Depending on the vehicle equipment level.

5 Recirculation Pump (V55)

• Depending on the vehicle equipment level.

6 Heater Core

• Change the coolant after replacing.

7 Transmission Oil Cooler

• Only for vehicles with a Direct Shift Gearbox (DSG(R)) or automatic transmission.

8 Engine Oil Cooler

9 Engine Pre-Heater

• Overview, refer to => [ Engine Pre-Heater Overview ] Engine Pre-Heater Overview.

• Removing and installing, refer to => [ Engine Pre-Heater ] Engine Pre-Heater.

10 Radiator

• Removing and installing, refer to => [ Radiator ] Service and Repair.

• Change the coolant after replacing.

11 4/2 Way Valve

• With the coolant thermostat.

• Removing and installing, refer to => [ 4/2 Way Valve with Thermostat ] 4/2 Way Valve with Thermostat.

12 Coolant Pump

• Removing and installing, refer to => [ Coolant Pump ] Service and Repair.