TOYOTA 2010 Prius User Manual
Page 277
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2-4. Using other driving systems
2
Wh
en drivin
g
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Obstacles not detected
The sensor cannot detect plastic obstacles such as pylons. There may also
be occasions when the radar sensor cannot detect pedestrians, animals,
bicycles, motorcycles, trees, or snowdrifts.
■
The pre-collision system is operational when
●
Pre-collision seat belts:
• Vehicle speed is above 3 mph (5 km/h).
• The relative speed difference between your vehicle and another vehi-
cle that is ahead of your vehicle, or the speed at which your vehicle is
approaching an obstacle is greater than 18 mph (30 km/h).
• The front occupants are wearing a seat belt.
●
Pre-collision brake assist:
• Vehicle speed is above 18 mph (30 km/h).
• The relative speed difference between your vehicle and another vehi-
cle that is ahead of your vehicle, or the speed at which your vehicle is
approaching an obstacle is greater than 18 mph (30 km/h).
• The brake pedal is depressed.
●
Pre-collision braking:
• The pre-collision braking off button is not pressed.
• Vehicle speed is above 9 mph (15 km/h).
• The relative speed difference between your vehicle and another vehi-
cle that is ahead of your vehicle, or the speed at which your vehicle is
approaching an obstacle is greater than 9 mph (15 km/h).