When the VSC/TRAC or Active TRAC/hill-start assist control systems are operating
If the vehicle is in danger of slip- ping or rolling backward when starting on an incline, or if any of the drive wheels spins, the slip indi- cator light flashes to indicate that the VSC/TRAC or Active TRAC/ hill-start assist control systems are operating.
A buzzer (intermittent) sounds to indicate that VSC is operating.
The stop lights and high mounted stoplight turn on when the hill-start assist control system is operating.

See also:
Vehicle interior
...
Heated steering wheel
The heated steering wheel can be used to heat the leather portion of
the steering wheel.
On/Off
The indicator light comes on
when the heater is operating.
- The heated steering wheel can be use ...
Radiator and condenser
Check the radiator and condenser and clear any foreign objects.
If either of the above parts is extremely dirty or you are not sure of their
condition, have your vehicle checked by your Lexus deale ...
