Lexus rx450h 2015 Owner's Manual page 279

Disabling pre-collision braking
Radar sensor
2-4. Using other driving systems
Pre-collision braking disabled
Pre-collision braking enabled
The pre-collision system warning
light turn on when pre-collision
braking is disabled.
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.
I n f o r ma t i o n P r o v i d e d b y :
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