2009 Lexus IS F Owners Manual - Page 172

2-4. Using other driving systems CAUTION n The ABS does not operate effectively when l The limits of tire gripping performance have been exceeded. l The vehicle hydroplanes while driving at high speed on the wet or slick road. n Stopping distance when the ABS is operating will exceed that of normal condi- tions The ABS is not designed to shorten the vehicle's stopping distance. Always maintain a safe distance from the vehicle in front of you in the following situations. l When driving on dirt, gravel or snow-covered roads l When driving over bumps in the road l When driving over roads with potholes or roads with uneven roads n TRAC may not operate effectively when Directional control and power may not be achievable while driving on slippery road surfaces, even if the TRAC system is operating. Do not drive the vehicle in conditions where stability and power may be lost. n If hill-start assist control does not operate effectively The hill-start assist control may not operate effectively on steep inclines and roads covered in ice. n When the VSC is activated The slip indicator light flashes and a warning buzzer sounds. Always drive carefully. Reckless driving may cause an accident. Exercise particular care when the indicator light flashes and a buzzer sounds. n When TRAC and VSC are off Be especially careful and drive at a speed appropriate to the road conditions. As there are systems to ensure vehicle stability and driving force, do not turn off TRAC and VSC unless necessary. 174