Lexus GS430 User Manual page 429

CAUTION
Certain conditions make vehicle detection difficult or
impossible.
D As this system operates by detecting primarily the
reflected wave from the rear end of the vehicle ahead,
the distance cannot be accurately detected in the
following cases, resulting
vehicle−to−vehicle distance.
♦ The rear section of the vehicle ahead is extremely
small such as an unloaded trailer.
♦ The vehicle ahead or other vehicles around you
are flinging up water or snow.
♦ Heavy luggage which is loaded in your trunk or on
top of your rear seats is raising up the nose of your
vehicle.
D The millimeter wave radar sensor automatically
detects dirt if it is sticking to the front of the sensor
or cover of your vehicle, and if detected, a message
appears on the multi−information display. However,
if the sensor or cover is covered with a metallic vinyl
bag, icicle, snowflakes, etc., dirt may not be detected,
resulting in improper vehicle−to−vehicle distance.
Continue driving with due care to the vehicle ahead.
If dirt is detected, the dynamic radar cruise control
function is automatically cancelled. Always keep the
sensor and cover clean.
Dynamic radar cruise control should not be used in the
following conditions, to avoid death or serious injury.
D In bad weather (such as rain, fog, snow, sandstorms,
or when raindrops or snowflakes get in the millimeter
wave
vehicle−to−vehicle distance will not be measured
accurately.
in improper
If the wipers are operated at high speed (including the
high speed operation with the wiper lever in the
"AUTO" position), dynamic radar cruise control is
automatically cancelled. (In the case of the low speed
operation and intermittent wiper operation, it is not
cancelled.)
automatically cancelled when the measurement is
extremely unstable due to bad weather.
D On the roads in heavy traffic or at sharp bends:
As an appropriate speed cannot be maintained, death
or serious injury could result.
D On slippery road surfaces (icy or snow−covered road
surfaces):
The tires will race and you will be unable to control.
STARTING AND DRIVING
radar sensor or the cover),
Dynamic radar cruise control is
the
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