Engine Cooling: Overview

The engine cooling system maintains the engine within an optimum temperature range under changing ambient and engine operating conditions. The system is a pressurized coolant expansion tank system with continuous bleeds to separate air from the engine coolant and to prevent the formation of air locks.

The engine cooling system also provides:

• Heating for:
  • The passenger compartment. For additional information, Refer to: HEATING AND VENTILATION and FUEL FIRED BOOSTER HEATER
• Cooling for:

• The engine For additional information, Refer to: ENGINE
• The oil cooler For additional information, Refer to: ENGINE
• Turbocharger (Vehicles With Ingenium I4 2.0L Diesel 240PS Engines) For additional information, Refer to: TURBOCHARGER
• Charge air cooler For additional information, refer to: INTAKE AIR DISTRIBUTION AND FILTERING
• The ATF  cooler - If equipped For additional information, Refer to: TRANSMISSION COOLING
• The EGR  . For additional information, refer to: ENGINE EMISSION CONTROL

The primary components of the engine cooling system are the:

• Variable coolant pump
• Radiator
• Electric cooling fan
• Coolant expansion tank
• Electric thermostat
• ATF  cooler - If equipped
• Active grille air shutter - If equipped
• Engine oil cooler
• Connecting hoses and pipes
• Charge air cooler
• Charge air coolant pump
• Charge air radiator.

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 through an external plug.

In cold climate markets, an active grille air shutter is installed to reduce aerodynamic drag and engine warm up time.