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:
Keeping the Key Safe
Replacing a Smart Key may be costly.
We advise you to keep a spare Smart Key and the key-number plate in a safe place.
If you record the key number in more than one place, do not record it in a way ...
Other settings
Used for changing settings for Lexus Insider and XM Sports and Stocks.
1. Push the “SETUP” button.
2. Touch “Other”.
On this screen, the following functions can be performed.
...
AFS (Adaptive Front-lighting System) (if equipped)
AFS (Adaptive Front-lighting System) secures excellent visibility at inter- sections
and on curves by automatically adjusting the direction of the light axis of the
headlights according to vehicle ...
