Transmission Cooler: Description and Operation: Overview

Transmission Cooling

OVERVIEW
The AW F21 automatic transmission uses an external fluid cooler to reduce the temperature of the transmission fluid.
In standard climate markets a plate type cooler is used and uses engine coolant to reduce the transmission fluid temperature.
In hot climate markets, an auxiliary transmission fluid cooler is used in addition to the plate type cooler used on standard climate vehicles. This provides additional cooling for the higher ambient temperatures experienced in these countries.