Toyota Lexusc Owner's Handbook Manual page 523

STARTING AND DRIVING
When the traction control system is operating, the following
conditions occur:
D The system controls the spinning of the 4 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.
functioning properly.
The slip indicator light comes on for a few seconds when the
ignition key is turned to "ON". If the indicator light does not
come on when the ignition is turned on, contact your Lexus
dealer.
504
This indicates the system is
"VSC" warning light
This light warns that there is a problem somewhere in the
vehicle stability control system or traction control system.
The light will come on when the ignition key is turned to "ON"
and will go off after a few seconds.
If the light comes on while driving, the vehicle stability control
system and traction control system do not work. However, as
conventional braking operates when applied, there is no
problem to continue your driving.