Pre-Collision System - Lexus RX450h Owners Book

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2-4. Using other driving systems

Pre-Collision System

When the radar sensor detects an unavoidable frontal collision, safety sys-

tems such as the brakes and seat belts are automatically engaged in an

attempt to lessen vehicle damage.

Pre-collision seat belts (front seat belts only)

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

collision 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. 92)

However, the system will not operate in the event of skidding when the

TRAC/VSC systems are disabled.

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

Radar sensor

The radar sensor detects vehicles

or other obstacles on or near the

road ahead and determines

whether a collision is imminent

based on the position, speed, and

heading of the obstacles.

: If equipped

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