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Turning off both TRAC and VSC systems
To turn the TRAC and VSC systems off, press and hold
seconds while the vehicle is stopped.
The VSC OFF indicator light will come on and the "Traction Control OFF"/
"TRAC OFF" will be shown on the multi-information display.
Press
again to turn the systems back on.
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When the message is displayed on the multi-information display show-
ing that TRAC has been disabled even if
TRAC and hill-start assist control (if equipped) cannot be operated. Contact
your Toyota dealer.
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Sounds and vibrations caused by ABS, brake assist, TRAC, VSC and
hill-start assist control (if equipped) systems
A sound may be heard from the engine compartment when the brake pedal
●
is depressed repeatedly, when the engine is started or just after the vehicle
begins to move. This sound does not indicate that a malfunction has
occurred in any of these systems.
Any of the following conditions may occur when the above systems are
●
operating. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after ABS is activated.
• The brake pedal may move down slightly after ABS is activated.
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EPS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may be
heard. This does not indicate a malfunction.
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Automatic reactivation of TRAC and VSC systems
After turning the TRAC and VSC systems off, the systems will be automati-
cally re-enabled in the following situations:
When the engine switch is turned to the "LOCK" position (vehicles without a
●
smart key system) or off (vehicles with a smart key system).
If only the TRAC system is turned off, the TRAC will turn on when vehicle
●
speed increases
If both the TRAC and VSC systems are turned off, automatic re-enabling will
not occur when vehicle speed increases.
SIENNA_OM_01999-08001_(U)
4-5. Using the driving support systems
has not been pressed
293
for more than 3
4
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Table of Contents
Troubleshooting
