2010 Lexus GS 450h Owners Manual - Page 218

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2-4. Using other driving systems

GS_HV_U (OM30C81U)

June 30, 2011 9:20 am

CAUTION

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If the hill-start assist control does not operate effectively

Do not overly rely on the hill-start assist control. The hill-start assist control may not

operate effectively on steep inclines and roads covered in ice.

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When the Enhanced VSC is activated

The slip indicator light flashes and a warning buzzer sounds. Always drive carefully.

Reckless driving may cause an accident. Exercise particular care when the indica-

tor light flashes and a buzzer sounds.

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When TRAC and Enhanced VSC are off

Be especially careful and drive at a speed appropriate to the road conditions. As

these are systems to ensure vehicle stability and driving force, do not turn off TRAC

and Enhanced VSC unless necessary.

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Replacing tires

Make sure that all tires are of the same size, brand, tread pattern and total load

capacity. In addition, make sure that the tires are inflated to the specified tire pres-

sure level.

The ABS and Enhanced VSC will not function correctly if different tires are fitted on

the vehicle.

Contact your Lexus dealer for further information when replacing tires or wheels.

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Handling of tires and suspension

Using tires with any kind of problem or modifying the suspension will affect the driv-

ing assist systems, and may cause the system to malfunction.