Coolant Hose Connection Diagrams

Coolant Hose Connection Diagrams

Vehicles without auxiliary heater





1 Radiator

• Removing and installing => [ Radiator ] Radiator

• Change coolant after replacing

2 Generator

3 Oil cooler

• Removing and installing => [ Oil Cooler ] Service and Repair

• Change coolant after replacing

4 Cylinder head and cylinder block

• Change coolant after replacing

5 Engine Coolant Temperature (ECT) Sensor (G62)

• Removing and installing => [ Engine Coolant Temperature Sensor ] Service and Repair

6 Throttle valve connection

7 Heater core

• Change coolant after replacing

8 Bleeder screw

• In coolant hose to heater core

9 Cap

• Pressure relief valve, checking => [ Pressure relief valve in cap,
checking ] Component Tests and General Diagnostics

10 Coolant expansion tank

11 Map Controlled Engine Cooling Thermostat (F265)

• Removing and installing => [ MAP Controlled Thermostat ] MAP Controlled Thermostat

12 Coolant pump

• Removing and installing => [ Coolant Pump ] Coolant Pump

Vehicles with auxiliary heater





1 Radiator

• Removing and installing => [ Radiator ] Radiator

• Change coolant after replacing

2 Generator

3 Oil cooler

• Removing and installing => [ Oil Cooler ] Service and Repair

• Change coolant after replacing

4 Cylinder head and cylinder block

• Change coolant after replacing

5 Engine Coolant Temperature (ECT) Sensor (G62)

• Removing and installing => [ Engine Coolant Temperature Sensor ] Service and Repair

6 Throttle valve connection

7 Heater core

• Change coolant after replacing

8 Bleeder screw

• In coolant hose to heater core

9 Cap

• Pressure relief valve, checking => [ Pressure relief valve in cap,
checking ] Component Tests and General Diagnostics

10 Coolant expansion tank

11 Auxiliary heater

12 Engine Coolant (EC) Switch-off Valve (heater) (N279)

13 Recirculation Pump (V55)

14 Map Controlled Engine Cooling Thermostat (F265)

• Removing and installing => [ MAP Controlled Thermostat ] MAP Controlled Thermostat

15 Coolant pump

• Removing and installing => [ Coolant Pump ] Coolant Pump

Vehicles with auxiliary cooler





1 Radiator

• Removing and installing => [ Radiator ] Radiator

• Change coolant after replacing

2 Auxiliary cooler

3 Coolant regulator for auxiliary cooler

4 After-run coolant pump (V51)

• Removing and installing => [ After-Run Coolant Pump ] Service and Repair

5 Generator

6 Oil cooler

• Removing and installing => [ Oil Cooler ] Service and Repair

• Change coolant after replacing

7 Cylinder head and cylinder block

• Change coolant after replacing

8 Engine Coolant Temperature (ECT) Sensor (G62)

• Removing and installing => [ Engine Coolant Temperature Sensor ] Service and Repair

9 Throttle valve connection

10 Heater core

• Change coolant after replacing

11 Bleeder screw

• In coolant hose to heater core

12 Cap

• Pressure relief valve, checking => [ Pressure relief valve in cap,
checking ] Component Tests and General Diagnostics

13 Coolant expansion tank

14 Map Controlled Engine Cooling Thermostat (F265)

• Removing and installing => [ MAP Controlled Thermostat ] MAP Controlled Thermostat

15 Coolant pump

• Removing and installing => [ Coolant Pump ] Coolant Pump