Lexus IS250 U Owner's Manual page 203

Radar sensor and grille cover
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Always keep the sensor and grille cover clean to ensure that the vehicle-to-vehicle dis-
tance control operates properly. (Some obstructions, such as snow, ice and plastic
objects, cannot be detected by the obstruction sensor.)
Dynamic radar cruise control is canceled if an obstruction is detected.
Grille cover
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Radar sensor
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Operation guide display
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When the dynamic radar cruise control switch is operated, a guidance display is shown
on the meters for a few seconds as to how to operate the dynamic radar cruise control
switch or distance switch. (P. 89)
Warning messages and buzzers for dynamic radar cruise control
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Warning messages and buzzers are used to indicate a system malfunction or to inform
the driver of the need for caution while driving. (P. 476)
IS350/250_U (OM53C50U)
4-5. Using the driving support systems
203
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