Transaxle/Transmission Cooling

Transaxle Cooling

Motor Electronics Cooling System (MECS)

The vehicle uses a pump driven cooling system, referred to as the Motor Electronics Cooling System (MECS) pump, to transfer heat generated by the Electronically Controlled Continuously Variable Transmission (eCVT) and the Hybrid Electric Vehicle (HEV) DC/DC converter to the atmosphere. The system uses a coolant-to-air radiator design.

The MECS (Motor Electronics Cooling System) pump is an electric pump that runs any time the ignition is in the ON position. Unlike traditional cooling systems, there is no thermostat in the MECS (Motor Electronics Cooling System) , so coolant flow should be continuous and considerably less than traditional powertrain cooling systems.

The flow direction is from the DC/DC converter to the MECS (Motor Electronics Cooling System) pump through the eCVT (Electronically Controlled Continuously Variable Transmission) , then through the MECS (Motor Electronics Cooling System) cooler from the LH to RH side of the vehicle back to the DC/DC converter.

The MECS (Motor Electronics Cooling System) cooling pump will make an audible noise if it is running and a slight vibration may be felt by touch.

The MECS (Motor Electronics Cooling System) cooling system has a coolant expansion tank mounted on top of the transaxle.