2013 Toyota Sequoia Owners Manual - Page 233
2013 Toyota Sequoia Manual
Page 233 highlights
2-4. Using other driving systems To disable VSC, Trailer Sway Control and/or A-TRAC (4H mode on 4WD models) If the vehicle gets stuck in fresh snow or mud, VSC, Trailer Sway Control and/or A-TRAC may reduce power from the engine to the wheels. You may need to turn the system off to enable you to rock the vehicle in order to free it.