2011 Lexus IS F Owners Manual - Page 191

2-4. Using other driving systems PCS (Pre-Collision System)∗ When the radar sensor detects possibility of a frontal collision, the precollision system such as the brakes and seat belts are automatically engaged to lessen impact and injuries to occupants as well as vehicle damage. n Pre-collision seat belts If the pre-collision sensor detects that a collision is unavoidable, the precollision system will retract the seat belt before the collision occurs. The same will happen if the driver makes an emergency braking or loses control of the vehicle. (→P. 62) However, the system will not operate in the event of skidding when the VSC system are disabled. 2 When driving n Pre-collision brake assist When there is a high possibility of a frontal collision, the system applies greater braking force in relation to how strongly the brake pedal is depressed. n Pre-collision braking When there is a high possibility of a frontal collision, the system warns the driver using a warning light, warning display and buzzer. If the system determines that a collision is unavoidable, the brakes are automatically applied to reduce the collision speed. The pre-collision braking function can be turned on and off using the satellite switch. Radar sensor Detects vehicles or other obstacles on or near the road ahead and determines whether a collision is imminent based on the position, speed, and heading of the obstacles. Grille cover Radar sensor ∗: If equipped 193