Transmission Cooling
WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
Vehicles equipped with automatic transmissions have a transmission auxiliary fluid cooler which is mounted between the radiator and the A/C condenser. In operation, transmission fluid travels from the transmission to the auxiliary transmission fluid cooler then back to the transmission. The transmission auxiliary fluid cooler transfers heat from the transmission fluid to the outside air.