Pre-Collision System - Toyota Prius 2011 Manual

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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 auto-

matically engaged to lessen impact and injuries to occupants as

well as vehicle damage.

Pre-collision seat belts

If the pre-collision sensor detects that a collision is unavoidable,

the pre-collision system will retract the seat belt before the colli-

sion occurs.

The same will happen if the driver makes an emergency braking

or loses control of the vehicle. (P. 86)

However, when the VSC is disabled, the system will not operate

in the event of skidding.

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.

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. Pre-collision braking can be disabled using the pre-colli-

sion braking off switch.

: If equipped