Lexus GX470 2004 Owner's Manual page 424

D The indicator light comes on when the system is on while
driving.
NOTICE
Make sure that the center differential lock indicator light
goes off before normal driving.
"VSC TRAC" warning light
This light warns that when there is a problem somewhere in the
following.
D Vehicle stability control system
D Active traction control system
D Downhill assist control system
D Hill-start assist control system
STARTING AND DRIVING
When the system is normal and the ignition key is turned to
"ON", the warning light will come on and will go off after a few
seconds. It is not a malfunction that the warning light may stay
on for 60 seconds after the ignition key is turned to the "ON"
position.
Depressing the brake pedal repeatedly may turn on the light.
It is normal if they go out after a few seconds.
If the light comes on while driving, the vehicle stability control
system does not work. However, as normal braking operates
when being applied, there is no problem to continue your
driving.
In the following cases, contact your Lexus dealer:
D The warning light does not come on after the ignition key is
turned to "ON".
D The warning light remains on after the ignition key is turned
to "ON".
D The warning light comes on while driving.
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