Lexus RX450H Manual page 325

2-4. Using other driving systems
Disabling pre-crash braking
Radar sensor
302
RX450h_EE
Pre-crash braking disabled
Pre-crash braking enabled
The pre-crash safety system
warning light turns on when
pre-crash braking is disabled.
The radar sensor detects vehi-
cles or other obstacles on or
near the road ahead and deter-
mines whether a collision is
imminent based on the position,
speed, and heading of the obsta-
cles.