2010 Lexus HS 250h Owners Manual - Page 236
2010 Lexus HS 250h Manual
Page 236 highlights
2-4. Using other driving systems Driver monitor sensor (if equipped) The driver monitor sensor detects the direction the driver is facing. The system determines whether the driver is facing forward. n The pre-collision system is operational when l Pre-collision warning • Vehicle speed is greater than about 9 mph (15 km/h). • The speed at which your vehicle is approaching the obstacle or oncoming vehicle is greater than about 9 mph (15 km/h). l Pre-collision seat belts (linked to brake operation) • Vehicle speed is greater than about 18 mph (30 km/h). • The system detects sudden braking or skidding. • The front occupants are wearing a seat belt. l Pre-collision seat belts (linked to the radar sensor) • Vehicle speed is greater than about 3 mph (5 km/h). • The speed at which your vehicle is approaching the obstacle or oncoming vehicle is greater than about 18 mph (30 km/h). • The front occupants are wearing a seat belt. l Pre-collision brake assist: • Vehicle speed is greater than about 18 mph (30 km/h). • The speed at which your vehicle is approaching the obstacle or the vehicle running ahead of you is greater than about 18 mph (30 km/h). • The brake pedal is depressed. 234