Lexus 2008 IS250 Owner's Manual page 171

VDIM (Vehicle Dynamics Integrated Management) (IS350)
n
Provides integrated control of the ABS, brake assist, TRAC, VSC, hill-start
assist control, and EPS systems.
Maintains vehicle stability when swerving on slippery road surfaces by
controlling the brakes and engine output.
PCS (Pre-Collision System) (if equipped)
n
P. 176
When the VSC/TRAC/hill-start assist control systems are operating
2-4. Using other driving systems
If the vehicle is in danger of slip-
ping, rolling backwards when
starting on an incline, or if the rear
wheels (2WD) or 4 wheels
(AWD) spin, the slip indicator light
flashes to indicate that the VSC/
TRAC/hill-start assist control sys-
tems have been engaged.
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.
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