Toyota Prius 2018, Owner'S Manual

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4-5. Using the driving support systems
4
Drivin
g
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Dynamic radar cruise control with full-speed range can be set when
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The shift position is in D.
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Vehicle speed is at or above approximately 30 mph (50 km/h).
However, when a preceding vehicle is detected, the dynamic radar cruise
control with full-speed range can be set even if the vehicle speed is below
approximately 30 mph (50 km/h).
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Accelerating after setting the vehicle speed
The vehicle can accelerate by operating the accelerator pedal. After acceler-
ating, the set speed resumes. However, during vehicle-to-vehicle distance
control mode, the vehicle speed may decrease below the set speed in order
to maintain the distance to the preceding vehicle.
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When the vehicle stops while follow-up cruising
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Pushing the lever up while the vehicle ahead stops will resume follow-up
cruising if the vehicle ahead starts off within approximately 3 seconds after
the switch is pressed.
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If the vehicle ahead starts off within 3 seconds after your vehicle stops, fol-
low-up cruising will be resumed.
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Automatic cancelation of vehicle-to-vehicle distance control mode
Vehicle-to-vehicle distance control mode is automatically canceled in the fol-
lowing situations.
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Actual vehicle speed falls at or below approximately 25 mph (40 km/h) when
there are no vehicles ahead.
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The preceding vehicle leaves the lane when your vehicle is following at a
vehicle speed at or below approximately 25 mph (40 km/h). Otherwise, the
sensor can not properly detect the vehicle.
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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.
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The sensor cannot detect correctly because it is covered in some way.
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Pre-collision braking is activated.
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Intelligent Clearance Sonar is operated. (if equipped)
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The parking brake is operated.
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The vehicle is stopped by system control on a steep incline.