2009 Lexus GS 450h Owners Manual - Page 276

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. n Brake assist Generates an increased level of braking force after the brake pedal is depressed, when the system detects a panic stop situation. n Enhanced VSC (Enhanced Vehicle Stability Control) Helps the driver to control skidding when swerving suddenly or turning on slippery road surfaces. n TRAC (Traction Control) Helps to maintain drive power and prevents the rear wheels from spinning when starting the vehicle or accelerating on slippery roads. n Hill-start assist control Helps prevent the vehicle from rolling backwards when starting on an incline or slippery slope. It operates for approximately 5 seconds at maximum. n EPS (Electric Power Steering) Employs an electric motor to reduce the amount of effort needed to turn the steering wheel. 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. 214 GS_HV_U (OM30B44U) March 8, 2010 10:03 am