Toyota Prius 2011 Manual page 229

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Automatic cancelation of constant speed control

The cruise control will stop maintaining the vehicle speed in the following sit-

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.

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

Radar sensor and grille cover

Warning lights, messages and buzzers for dynamic radar cruise con-

Warning lights, messages and buzzers are used to indicate a system mal-

function or to inform the driver of the need for caution while driving. 

Approximately 160 ft. (50 m)

Approximately 130 ft. (40 m)

Approximately 100 ft. (30 m)

Always keep the sensor and grille cover

clean to ensure that the vehicle-to-vehi-

cle 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 can-

celed if an obstruction is detected.

2-4. Using other driving systems

Vehicle-to-vehicle distance