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:
SRS airbags
The SRS airbags inflate when the vehicle is subjected to certain types of
severe impacts that may cause significant injury to the occupants. They work together
with the seat belts to help reduce t ...
Vehicle Service History
When you have your vehicle serviced at a Lexus dealership, your service information
is recorded in the Lexus National Service History database.
This is the first database of its kind in the automot ...
Maintenance requirements
To ensure safe and economical driving, day-to-day care and regular maintenance
are essential. It is the owner’s responsibility to perform regular checks. Lexus
recommends performing the followin ...
