Cooling System: Notes

This vehicle is equipped with two fully independent cooling systems. One system is dedicated to cooling the engine and the other is used for the hybrid electronics. Refer to Drive Motor Generator Control Module Cooling System Description and Operation for additional hybrid cooling information.

The engine cooling system's function is to maintain an efficient engine operating temperature during all engine speeds and operating conditions. The cooling system is designed to remove approximately one-third of the heat produced by the burning of the air-fuel mixture. When the engine is cold, the coolant does not flow to the radiator until the thermostat opens. This allows the engine to warm quickly.