Toyota 2013 Yaris Owner's Manual page 184

2-4. Using other driving systems
CAUTION
■
TRAC may not operate effectively when
Directional control and power may not be achievable while driving on slip-
pery road surfaces, even if the TRAC system is operating.
Be especially careful and drive the vehicle in conditions where stability and
power may be lost.
■
When the VSC is activated
The slip indicator flashes. Always drive carefully. Reckless driving may
cause an accident. Exercise particular care when the indicator light flashes.
■
When the TRAC/VSC systems are turned off
Be especially careful and drive at a speed appropriate to the road condi-
tions. Do not turn the TRAC/VSC systems off unless necessary, as these are
the systems to ensure vehicle stability and driving force by automatically
controlling braking and engine outputs.
■
Replacing tires
Observe the following precautions.
Failure to do so may cause the ABS, VSC and TRAC systems not to function
correctly.
●
Make sure that all tires are of the specified size, brand, tread pattern and
total load capacity.
●
Do not use tires of noticeably different wear level.
●
Make sure that the tires are inflated to the recommended tire inflation
pressure level. (→P. 351)
Contact your Toyota dealer for further information when replacing tires or
wheels.
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Handling of tires and the suspension
Using tires with any kind of problem or modifying the suspension will affect
the driving assist systems, and may cause a system to malfunction.
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