Lexus 2008 IS250 Owner's Manual page 173

Automatic reactivation of TRAC and VSC
n
Turning the "ENGINE START STOP" switch OFF after turning off the TRAC and
VSC systems will automatically re-enable them.
Automatic TRAC reactivation
n
If only the TRAC system is turned off, the TRAC system will turn on when vehicle
speed increases.
Automatic TRAC and VSC reactivation
n
If the TRAC and VSC systems are turned off, the systems will not turn on even when
vehicle speed increases.
Sounds and vibrations caused by the ABS, brake assist, VSC, TRAC and hill-start
n
assist control systems
A sound may be heard from the engine compartment when the engine is
l
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 operat-
l
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.
2-4. Using other driving systems
2
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