I had to turn the “ESC” off in my wife’s car the other day to get it up the driveway.
http://justgivemethedamnmanual.com/toyota/toyota-highlander-owners-manuals/
I am not sure what year yours is, but there is a “TRAC OFF” button on the 2007 model, located to the right of the steering wheel on the dash.
SD- that site you linked has a hilarious name "just give me the damn manual" lol