2010 Toyota Yaris Owners Manual - Page 558

2-4. Using other driving systems To disable TRAC and/or VSC If the vehicle gets stuck in fresh snow or mud, TRAC or VSC 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. n TRAC OFF mode Press the VSC OFF switch briefly. The TRAC OFF indicator will come on. The system is in TRAC off and VSC on mode. Push the switch again to turn the system back on. 140