Lexus RX400h2006 Owner's Manual page 453

STARTING AND DRIVING
CAUTION
To avoid accidents, always keep the laser radar sensor
glass clean and never allow it to be covered with icicle
or any substance, so it can detect the vehicle in front.
(See "(k) Laser radar sensor" on page 435.)
426
CAUTION
Do not rely excessively on dynamic laser cruise control.
Observe the following precautions in order to avoid
serious injury or death:
D Under certain conditions when the vehicle in front
slows abruptly, or is stopped, the dynamic laser
cruise control may be unable to decelerate
automatically or to warn you. You must apply the
brakes manually in order to maintain a safe
vehicle−to−vehicle distance or avoid collision.
Therefore, pay careful
vehicle−to−vehicle distance, even when using the
dynamic laser cruise control.
D Do not use dynamic laser cruise control in the
following conditions:
In bad weather (such as rain, fog, snow, sandstorms
or direct sunlight, or when raindrops or snowflakes
get on the laser radar
vehicle−to−vehicle distance will not be measured
accurately.
When using the windshield wipers at high or low
speeds, the dynamic laser cruise control turns off.
On roads with heavy traffic or sharp bends, an
appropriate speed cannot be maintained and an
accident may occur.
attention to
sensor glass), the