2009 Lexus IS F Owners Manual - Page 167

2-4. Using other driving systems Driving assist systems To help enhance driving safety and performance, the following systems operate automatically in response to various driving situations. Be aware, however, that these systems are supplementary and should not be relied upon too heavily when operating the vehicle. n ABS (Anti-lock Brake System) Helps to prevent wheel lock when the brakes are applied suddenly, or if the brakes are applied while driving on a slippery road surface. 2 n Brake assist Generates an increased level of braking force after the brake pedal is depressed, when the system detects a panic stop situation. When driving n VSC (Vehicle Stability Control) Helps the driver to control skidding when swerving suddenly or turning on slippery road surfaces. n TRAC (Traction Control) Maintains drive power and prevents the rear wheels from spinning when starting the vehicle or accelerating on slippery roads. n Hill-start assist control Prevents the vehicle from rolling backwards when starting on an incline or slippery slope. n EPS (Electric Power Steering) Employs an electric motor to reduce the amount of effort needed to turn the steering wheel. n VDIM (Vehicle Dynamics Integrated Management) 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. When the "SPORT" side of the F-sport mode total control switch is pressed, "Sport" mode is activated. (→P. 172) n PCS (Pre-Collision System) (if equipped) →P. 176 169