2012 Lexus IS F Owners Manual - Page 205

205

2-4. Using other driving systems

2

■

The pre-collision system is operational when

●

Pre-collision seat belts (type A):

°

Vehicle speed is above 4 mph (5 km/h).

° The speed at which your vehicle is approaching the obstacle or oncoming

vehicle exceeds about 19 mph (30 km/h).

°

The front occupants are wearing a seat belt.

●

Pre-collision seat belts (type B):

°

Vehicle speed exceeds 19 mph (30 km/h).

°

The system detects sudden braking or skidding.

°

The front occupants are wearing a seat belt.

●

Pre-collision brake assist

°

Vehicle speed is above 19 mph (30 km/h).

°

The speed at which your vehicle is approaching the obstacle or the vehicle is

greater than 19 to 25 mph (30 to 40 km/h).

°

The brake pedal is depressed.

●

Pre-collision braking

°

The pre-collision braking function is activated.

°

Vehicle speed is above 10 mph (15 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 10 mph (15 km/h).

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Conditions that may trigger the system even if there is no possibility of collision

●

When there is an object by the roadside at the entrance to a curve

●

When passing an oncoming vehicle on a curve

●

When driving over a narrow iron bridge

●

When there is a metal object on the road surface

●

When driving on an uneven road surface

●

When passing an oncoming vehicle on a left-turn

●

When your vehicle rapidly closes on the vehicle in front

●

When a grade separation/interchange, sign, billboard, or other structure

appears to be directly in the vehicle's line of travel.

●

When an overhead billboard or other metallic structure appears to be in the

vehicle’s direct line of travel due to driving on a hill.