Hill-Start Assist Control (Hac) - Toyota Sienna Quick Reference Manual

VSC/TRAC OFF switch
VSC OFF button
The VSC OFF switch can be used to help free a stuck vehicle in surroundings like
mud, dirt or snow. While the vehicle is stopped, press switch to disable the TRAC
system.
To disable both VSC and TRAC systems, press and hold the switch for at least 3
seconds.
Refer to the Owner's Manual for limitations and more information.

Hill-start Assist Control (HAC)

Brake
pedal
HAC helps prevent rolling backwards on an incline. To engage, push the brake
pedal farther down while at a complete stop until a beep sounds and slip indicator
illuminates. HAC holds for approximately 2 seconds after releasing brake pedal.
Refer to the Owner's Manual for more details.
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