Lexus ES350, Manual, Page: 305 / 917

ES350_300h_OM_OM33A60U_(U)
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4-5. Using the driving support systems
4
Dr
iving
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When the message is displayed on the multi-information display showing that
TRAC has been disabled even if the VSC OFF switch has not been pressed
TRAC and hill-start assist control (hybrid vehicles) cannot be operated. Contact
your Lexus dealer.
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When the 12-volt battery is disconnected
The steering wheel may move from its straight forward position, but this will be cor-
rected automatically when driving.
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Sounds and vibrations caused by the ABS, brake assist, VSC and TRAC systems
●
A sound may be heard from the engine compartment when the brake pedal is
depressed repeatedly, when the engine <hybrid system> 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.
●
Any of the following conditions may occur when the above systems are 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 (gasoline vehi-
cles).
• The brake pedal may move down slightly after the ABS is activated (gasoline
vehicles).
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EPS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may be heard.
This does not indicate a malfunction.
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Automatic reactivation of TRAC and VSC systems
After turing the TRAC and VSC systems off, the systems will be automatically re-
enabled in the following situations:
●
When the “START STOP ENGINE” <“POWER”> switch is turned off
●
If only the TRAC system is turned off, the TRAC will turn on when vehicle speed
increases.
If both the TRAC and VSC systems are turned off, automatic re-enabling will not
occur when vehicle speed increases.