2011 Lexus IS 350 User Guide - Page 209
2011 Lexus IS 350 Manual
Page 209 highlights
2-4. Using other driving systems n The pre-collision system is operational when l Pre-collision seat belt (type A) • Vehicle speed is above 3 mph (5 km/h). • The speed at which your vehicle is approaching the obstacle or oncoming vehicle exceeds 18 to 24 mph (30 to 40 km/h). • The front occupants are wearing a seat belt. l Pre-collision seat belts (type B) • Vehicle speed exceeds 18 mph (30 km/h). • The system detects sudden braking or skidding. • The front occupants are wearing a seat belt. l Pre-collision brake Assist • Vehicle speed is above 18 mph (30 km/h). • The speed at which your vehicle is approaching the obstacle or the vehicle is greater than 18 to 24 mph (30 to 40 km/h). • The brake pedal is depressed. l Pre-collision braking: • The pre-collision braking function is activated. • Vehicle speed is above 9 mph (1 5 km/h). • The relative speed difference between your vehicle and another vehicle that is forward of your vehicle, or the speed at which your vehicle is approaching an obstacle is greater than 9 mph (1 5 km/h). n Situations in which the pre-collision system does not function properly The system may not function effectively in situations such as the following: l On roads with sharp bends or uneven surfaces l On slippery roads such as those covered with ice or snow l If a vehicle suddenly moves in front of your vehicle, such as at an intersection l If a vehicle suddenly cuts in front of your vehicle, such as when overtaking l In inclement weather such as heavy rain, fog, snow or sand storms l When your vehicle is skidding with the VSC system off 216