Lexus LS460 User Manual page 259

Automatic cancelation of constant speed control
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The cruise control will stop maintaining the vehicle speed in the following situations:
Actual vehicle speed is more than approximately 10 mph (16 km/h) below the set
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vehicle speed.
At this time, the memorized set speed is not retained.
Actual vehicle speed falls below approximately 25 mph (40 km/h).
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VSC is activated.
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TRAC is activated for a period of time.
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When the VSC or TRAC system is turned off by pressing the VSC OFF switch.
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When the LKA (Lane-Keeping Assist) will be activated
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Using the radar cruise control in vehicle-to-vehicle distance control mode, lane
keeping assistance control is activated.
Radar sensor and grille cover
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Always keep the sensor and grille cover clean to ensure that the vehicle-to-vehicle
distance control operates properly. (Some obstructions, such as snow, ice and plastic
objects, cannot be detected by the obstruction sensor.)
Dynamic radar cruise control with full-speed range is canceled if an obstruction is
detected.
Grille cover
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Radar sensor
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Warning messages and buzzers for dynamic radar cruise control with full-speed
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range
Warning messages and buzzers are used to indicate a system malfunction or to
inform the driver of the need for caution while driving. (P. 808)
LS460/LS460L_U (OM50D48U)
4-5. Using the driving support systems
259
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