What's up everyone. I'm a proud owner of a new 13 Tundra double cab Louisiana Edition. It's my first new vehicle and quite an upgrade from the 2000 s10 I traded for the tundra. I do have a ? Though. When I press the TRAC button the auto-LSD light comes on. If I hold the button down the TRAC OFF and auto-LSD light comes on. Could someone explain exactly what is turning on and off. And if I wanted to maybe do some donuts in a field or something what to turn off? Thanks in advance!