Engine Cooling - INGENIUM I4 2.0L Petrol/INGENIUM I4 2.0L Petrol - PHEV (G2498298): Overview

The engine cooling system maintains the engine within an optimum temperature range under changing ambient and engine operating conditions. A pressurized expansion tank system is used which continuously separates the air from the cooling system and replenishes the system through a hose connected between the expansion tank and the thermostat. A continuous vent into the expansion tank, through a hose connected to the engine, prevents air locks from forming in the cooling system.

The engine cooling system also provides cooling for the following:

• The oil cooler
  • For additional information, Refer to: DESCRIPTION AND OPERATION .
• The engine
  • For additional information, Refer to: DESCRIPTION AND OPERATION .
• The ATF  cooler
  • For additional information, Refer to: TRANSMISSION COOLING - VEHICLES WITH: 8HP45 8-SPEED AUTOMATIC TRANSMISSION AWD .
• The charge air cooler
  • For additional information, Refer to: DESCRIPTION AND OPERATION .
• The turbocharger.
  • For additional information, Refer to: DESCRIPTION AND OPERATION .

The engine cooling system also provides heating for the following:

• The passenger compartment.
  • For additional information, refer to: HEATING AND VENTILATION (G1917570) ,

    FUEL FIRED BOOSTER HEATER (G2818275) .

The primary components of the engine cooling system are the:

• Variable coolant pump
• Electric thermostat
• Radiator
• Electric cooling fan
• Coolant expansion tank
• Engine oil cooler
• Auxiliary coolant pump
• Engine coolant degas separator
• Connecting hoses and pipes
• Charge air cooler
• Charge air coolant pump
• Charge air radiator
• ATF  cooler
• Thermostatic valve
• ATF  warming valve.

In cold climate markets, an optional block heater is available as a Retailer/Authorized Repairer fit accessory. The block heater is located in the cylinder block and is connected to a power supply though an external plug.