Toyota LEXUS LS430 2005 Manual page 397

STARTING AND DRIVING
Precaution for pre−collision safety system
It should be noted that the pre−collision sensor may detect the
following as the objects with which your vehicle might collide,
and the pre−collision safety may operate, even though there
is no possibility of collision.
D When traveling through a curve, there is an object on the
edge of the road.
D When traveling through a curve, another vehicle is passing
from the opposite direction.
D When traveling across a narrow iron bridge.
D When there is a metallic object on the road.
D When there is a steel plate on the road at a construction site.
D When there is a bump on the road.
D When waiting to turn to the left in an intersection, and
another vehicle is passing from the opposite direction.
D If your vehicle approaches another vehicle ahead very
quickly.
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CAUTION
D Do not rely solely on the pre−collision safety system
to avoid accidents. Your safe and attentive driving
practices are still the best way to avoid accidents and
you are always responsible for the operation of the
vehicle and the safety of your passengers. When
driving, always pay attention to the surrounding
conditions and the course you are driving.
D The pre−collision sensor's collision detection
performance is limited. The sensor is able to detect
a forward object within 10 degrees on either left or
right side. If it is out of the range, or if there is no or
weak millimeter wave reflection, the sensor could not
detect the object and the system does not work
properly.
D Even if the pre−collision safety is operative in an
unavoidable collision, unless the seat belts are worn
and the brake pedal is depressed, the pre−collision
seat belts and pre−collision brake assist system will
not work.