2011 Lexus LS 460 Owners Manual - Page 393

2-4. Using other driving systems Pre-Collision System∗ When the radar sensor detects possibility of a frontal collision, the pre-collision 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. 94) However, the system will not operate in the event of skidding when the VSC system is 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 help reduce the collision speed. Pre-collision braking function can be turned on and off using the pre-collision braking off switch. (→P. 298) n Suspension control (If equipped) When there is a high possibility of a frontal collision, the operation of suspension control helps prevent the front of the vehicle from dropping when the brakes are applied suddenly. ∗: If equipped 297