Toyota SIENNA 2011 Quick Reference Manual page 334

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Automatic cancelation of constant speed control
The cruise control will stop maintaining the vehicle speed in the following sit-
uations:
●
Actual vehicle speed is more than approximately 10 mph (16 km/h)
below the set vehicle speed.
At this time, the memorized set speed is not retained.
●
Vehicle speed falls below approximately 25 mph (40 km/h).
●
Enhanced VSC is activated.
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Vehicle-to-vehicle distance settings
Select a distance from the table below. Note that the distances shown corre-
spond to a vehicle speed of 50 mph (80 km/h). Vehicle-to-vehicle distance
increases/decreases in accordance with vehicle speed.
Distance options
Medium
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Radar sensor and grille cover
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 is canceled if an obstruction is detected.
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Warning lights and buzzers for dynamic radar cruise control
Warning lights and buzzers are used to indicate a system malfunction or to
inform the driver of the need for caution while driving. (→P. 681)
Long
Short
I n f o r ma t i o n P r o v i d e d b y :
2-4. Using other driving systems
Vehicle-to-vehicle distance
Approximately 160 ft. (50 m)
Approximately 130 ft. (40 m)
Approximately 100 ft. (30 m)
Grille cover
Radar sensor
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