Toyota Avalon 2008 Quick Reference Manual page 190

2-4. Using other driving systems
Sounds and vibrations caused by the ABS, brake assist, VSC and
n
TRAC
A sound may be heard from the engine compartment when the engine is
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started or just after the vehicle begins to move. This sound does not indi-
cate that a malfunction has occurred in any of these systems.
Any of the following conditions may occur when the above systems are
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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 the ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.
CAUTION
n The ABS does not operate effectively when
The limits of tire gripping performance have been exceeded.
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The vehicle hydroplanes while driving at high speed on the wet or slick
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road.
Stopping distance when the ABS is operating on the wet or slick roads
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The ABS is not designed to shorten the vehicle's stopping distance. Always
maintain a sufficient distance from the vehicle in front of you in the following
situations.
When driving on dirt, gravel or snow-covered roads
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When driving with tire chains
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When driving over bumps in the road
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When driving over roads with potholes or roads with uneven pavement
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