2009 Lexus LS 600h Owners Manual - Page 231

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 any of the drive wheels from spinning when starting the vehicle or accelerating on slippery roads n Hill-start assist control Prevents the vehicle from rolling backward 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 VGRS (Variable Gear Ratio Steering) Adjusts the wheel turning angle in accordance with the vehicle speed and steering wheel movement n Active stabilizer suspension system (if equipped) Reduces sway when cornering according to steering wheel movement and the selected suspension damping mode, in order to maintain a stable vehicle posture 233