Toyota 2015 Prius Owner's Manual page 283

Automatic cancelation of vehicle-to-vehicle distance control
■
Vehicle-to-vehicle distance control driving is automatically canceled in the
following situations:
●
Actual vehicle speed falls below approximately 25 mph (40 km/h).
●
Enhanced VSC is activated.
●
The sensor cannot operate correctly because it is covered in some way.
●
The windshield wipers are operating at high speed (when the wiper
switch is set to the high speed windshield wiper operation position).
If vehicle-to-vehicle distance control driving is automatically canceled for any
other reason, there may be a malfunction in the system. Contact your Toyota
dealer.
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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2-4. Using other driving systems
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