So I've read on FB KL pages that shifting into 4 low cools your transmission when on the trail. Last week while in Colorado on a simple up and down trail while in auto my TH transmission over temp warning came up so I hit the 4 low button and kept going. The trans temp dropped. My friend's Compass TH had a similar issue where he stated power got pulled if his trans temp went over 180 - 200. He hit the 4 low button and his trans temp also lowered and driving became normal. As far as I know there aren't any gears that physically change when in 4 low. Does the pump speed up and circulate the fluid better or what causes the cooling??