Lexus GS450h2016, Service Manual

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GS450h_OM_OM30E99U_(U)
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4-5. Using the driving support systems
4
Dr
iving
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Turning off both TRAC/VSC systems
To turn the TRAC/VSC systems off, press and hold for more than 3 seconds while
the vehicle is stopped.
The VSC OFF indicator light will come on and the “Traction Control Turned Off” will
be shown on the multi-information display.
*
Press again to turn the systems back on.
*
: On vehicles with PCS (Pre-Collision System), pre-collision brake assist and pre-col-
lision braking steering control (performed through cooperative control of PCS
[Pre-Collision System] and LDH) (if equipped) will also be disabled. The PCS (Pre-
Collision System) warning light will come on and a message will be displayed on the
multi-information display. (

P. 406)
■
When the message is displayed on the multi-information display showing that TRAC
has been disabled even if
has not been pressed
TRAC and hill-start assist control cannot be operated. Contact your Lexus dealer.
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VGRS is disabled when
VGRS may stop operating in the following situations.
In this event, the steering wheel may move from its straight forward position, but it will
return when the system restarts.
●
The steering wheel is operated for an extended period of time while the vehicle is
stopped or is moving very slowly.
●
When force is continuously applied for a long time with the steering wheel turned as far
as it will go.
The center position of the steering wheel may change when VGRS is disabled. However,
the position will return to normal after VGRS is reactivated.
■
When the 12-volt battery is disconnected
The steering wheel may move from its straight forward position, but this will be corrected
automatically when driving.
■
Sounds and vibrations caused by the ABS, brake assist, VSC, Hill-start assist control,
TRAC and VGRS 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.
●
The brake pedal may move down slightly after the ABS is activated.