Lexus LS 600h L 2012 Owner's Manual page 323

2-4. Using other driving systems
Conditions that may trigger the system even if there is no possibility of 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 there is a metal plate in the road in front of the vehicle on a downhill slope
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When there is a metal object such as a sign board in front of the vehicle on an
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uphill slope
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 your vehicle is skidding with the VSC system off
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When a grade separation/interchange, sign, billboard, or other structure
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appears to be directly in the vehicle's line of travel.
When climbing a steep hill causes an overhead billboard or other metallic struc-
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ture to appear directly in the vehicle's line of travel.
When an extreme change in vehicle height occurs
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When the axis of the radar is out of adjustment
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When passing through certain toll gates
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When the system is activated in the situations described above, there is also a possi-
bility 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.
Situations in which the pre-collision system does not function properly
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The system may not function effectively in situations such as the following:
On roads with sharp bends or uneven surfaces
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On slippery roads such as those covered with ice or snow
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If a vehicle suddenly moves in front of your vehicle, such as at an intersection
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If a vehicle suddenly cuts in front of your vehicle, such as when overtaking
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In inclement weather such as heavy rain, fog, snow or sand storms
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When your vehicle is skidding with the VSC system off
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When only part of your vehicle' s front end collides with, or contacts, a vehicle or
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object in a frontal collision
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