2007 Lexus GS 450h User Guide - Page 181

2-4. Using other driving systems n VDIM (Vehicle Dynamics Integrated Management) Provides integrated control of the ABS, VSC, TRAC, hill-start assist control, VGRS and EPS systems. Maintains vehicle stability when swerving on slippery road surfaces by controlling the brakes, engine output, and the movement of the front wheels. n PCS (Pre-Collision System) (if equipped) →P. 167 2 When driving When the VSC/TRAC/hill-start assist control systems are operating If the vehicle is in danger of slipping, rolling backwards when starting on an incline, or if the rear wheels spin, the slip indicator light flashes to indicate that the VSC/ TRAC/hill-start assist control systems 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. The slip indicator light flashes as well when ABS is operating. 163