Toyota 2014 Sienna Manual page 343

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Conditions that may trigger the system even if there is no possibility of
a collision
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When there is an object by the roadside at the entrance to a curve
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When passing an oncoming vehicle on a curve
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When driving over a narrow iron bridge
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When there is a metal object on the road surface
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When driving on an uneven road surface
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When passing an oncoming vehicle on a left-turn
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When your vehicle rapidly closes on the vehicle in front
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When a grade separation/interchange, sign, billboard, or other structure
appears to be directly in the vehicle's line of travel
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When climbing a steep hill or going down a downhill slope causes an
overhead billboard or other metallic structure to appear directly in the
vehicle's line of travel
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When there are excessive changes in the vehicle height (when it tilts for-
wards or backwards)
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When passing through an electronic toll collection gate (only in countries
with electronic toll collection)
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When the axis of the radar is out of adjustment
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When passing through the overpass
When the system is activated in the situations described above, there is also
a possibility that the seat belts will retract quickly and the brakes will be
applied with a force greater than normal. When the seat belt is locked in the
retracted position, stop the vehicle in a safe place, release the seat belt and
refasten it.
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Obstacles not detected
The sensor cannot detect plastic obstacles such as traffic cones. There may
also be occasions when the radar sensor cannot detect pedestrians, ani-
mals, bicycles, motorcycles, trees, or snowdrifts.
SIENNA_OM_OM45483U_(U)
2-4. Using other driving systems
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