Lexus 2013 IS250 Owner's Manual page 279

Disabling pre-crash safety system
1
Enabled
2
Disabled
The pre-crash safety system warning
light comes on when pre-crash
safety system is disabled.
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.
IS250_EE(OM53B11E)
4-5. Using the driving support systems
277
4