2013 Toyota Highlander Owners Manual - Page 551

2 -4 . U sing ot he r driving syst e m s Dow nhill a ssist c ont rol syst e m (4 WD m ode ls) With the downhill assist control system, the vehicle is able to descend a steep hill, maintaining a constant low speed of about 3 mph (5 km/h) without brake pedal operation.