2010 Lexus IS F Owners Manual - Page 773

184

2-4. Using other driving systems

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Sounds and vibrations caused by the ABS, brake assist, VSC, TRAC and hill-start

assist control systems

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A sound may be heard from the engine compartment 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.

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Any of the following conditions may occur when the above systems are operat-

ing. 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 the ABS is activated.

°

The brake pedal may move down slightly after the ABS is activated.

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Hill-start assist control is operational when

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The shift lever is in the D or M position.

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The brake pedal is not depressed.

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EPS operation sound

When the steering wheel operates, a motor sound (whirring sound) may be heard.

This does not indicate a malfunction.

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Reduced effectiveness of EPS

The effectiveness of EPS is reduced to prevent the system from overheating when

there is frequent steering input over an extended period of time. The steering wheel

may feel heavy as a result. Should this occur, refrain from excessive steering input or

stop the vehicle and turn the engine OFF. The system should return to normal within

10 minutes.

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Automatic deactivation of “Sport” mode

When the “ENGINE START STOP” switch is turned OFF after driving in “Sport”

mode, the mode is automatically deactivated.

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If the slip indicator comes on

It may indicate a malfunction in the VSC, TRAC or hill-start assist control system.

Contact your Lexus dealer.