Lexus GS430 User Manual page 449

G31038
"Slip indicator light
Leave the system on during the ordinary driving so that it
can operate when needed.
You may hear a sound in the engine compartment for a few
seconds just after the vehicle begins to move. This means that
the traction control system is in the self−check mode, but does
not indicate a malfunction.
When the traction control system is operating, the following
conditions occur:
D The system controls the spinning of the drive wheels. At this
time, the slip indicator light blinks.
D You may feel vibration or noise in your vehicle, caused by
operation of the brakes. This indicates the system is
functioning properly.
GS430—The slip indicator light comes on when the engine
switch is selected in "IG−ON" mode. The light goes off when
the engine is started.
STARTING AND DRIVING
GS300—The slip indicator light comes on for a few seconds
when the engine switch is selected in "IG−ON" mode.
If the indicator light does not come on when the engine switch
is selected in "IG−ON" mode, contact your Lexus dealer.
Traction control off mode
(two−wheel drive models only)
G31008
If your wheels get stuck in a ditch when you are driving on
a severe off road and sand, turn off the traction control
system. This system that controls engine performance
interferes with the process of freeing your wheels.
To turn off: Push "TRAC OFF" switch.
The slip indicator light will come on.
The vehicle stability control system is always activated even if
the traction control system is turned off.
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