2013 Toyota Sequoia Owners Manual - Page 231

2-4. Using other driving systems When VSC/Trailer Sway Control/TRAC/A-TRAC are operating If the vehicle is in danger of slipping, or if the rear wheels (2WD models) or all wheels (4WD models) spin, the slip indicator flashes to indicate that VSC/Trailer Sway Control/TRAC/ A-TRAC have been engaged. To disable VSC, Trailer Sway Control and/or TRAC (2WD models and 2WD mode on 4WD models) If the vehicle gets stuck in fresh snow or mud, VSC, Trailer Sway Control and/or 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.