Automatic Active Trac Reactivation; Automatic Active Trac, Vsc And Trailer Sway Control Reactivation; If The Brake System Overheats; Vgrs Is Disabled In The Following Situations - Lexus LX 570 2016 Service Manual

Automatic Active TRAC reactivation

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If only the Active TRAC system is turned off, the Active TRAC system will turn on when
vehicle speed increases.

Automatic Active TRAC, VSC and Trailer Sway Control reactivation

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If the Active TRAC, VSC and Trailer Sway Control are turned off, the systems will not
turn on even when vehicle speed increases.

If the brake system overheats

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The brake system may overheat. In this case, a buzzer will sound, and the TRAC OFF
indicator will flash, and Active TRAC and hill-start assist control will be temporarily inop-
erable. In this event, stop the vehicle immediately in a safe place, and allow the brake sys-
tem to cool down sufficiently until the TRAC OFF indicator goes off. (There is no
problem with continuing normal driving.)
Sounds and vibrations caused by the Multi Terrain ABS, brake assist, Active TRAC,
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VSC, Trailer Sway Control, hill-start assist control and VGRS
A sound may be heard from the engine compartment when the engine is started or just
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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 operating.
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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 Multi Terrain ABS is activated.
• The brake pedal may move down slightly after the Multi Terrain ABS is activated.
Hill-start assist control is operational when
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The shift lever is in D or S.
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The brake pedal is not depressed.
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VGRS is disabled in the following situations

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During stopping or the steering wheel has been moved for a long time while driving at
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lower speeds.
After the engine is restarted at less than -22°F (-30°C).
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If you disconnect the battery with the steering wheel turned, the center position of the
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steering wheel could be slightly and temporary changed. To initialize the VGRS, drive
for a short while.
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4-5. Using the driving support systems
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