Pre-Collision System; Pre-Collision Seat Belts (Front Seat Belts Only); Pre-Collision Brake Assist; Pre-Collision Braking - Lexus 2015 RX350 Owner's Manual

2-4. Using other driving systems

Pre-Collision System

When the radar sensor detects the possibility of a frontal collision, the pre-
collision system such as the brakes and seat belts are automatically
engaged to lessen impact as well as vehicle damage.
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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. 85)
However, the system will not operate in the event of skidding when the
VSC system is disabled.
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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. The system may not warn the driver using a warning light,
warning display and buzzer when the system detects and judges braking
operations.
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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 dis-
abled using the pre-collision braking off switch.
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I n f o r ma t i o n P r o v i d e d b y :
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: If equipped