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:
Additional Coverage
After your roadside assistance coverage expires, you may join a motor club created
exclusively for Lexus owners. Benefits include roadside assistance coverage, a trip-planning
service and discount ...
Changing other settings
Setting the display mode
Pushing “SIZE” changes the display modes sequentially as follows:
Normal “Wide 1” “Wide 2”
Adjusting the screen
Push “DISPLAY”.
Select the desired b ...
Taking out the tool box
Remove the cover.
Take out the tool box.
...
