Lexus LS460 Owner's Manual page 301

Conditions that may trigger the system even if there is no danger of a collision
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In any of the following situations where the frontal area of the radar sensor is inter-
rupted, the radar sensor may detect possibility of a frontal collision and the system
may be activated.
When passing by an oncoming vehicle in a curve or a turn to the right or the left.
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When rapidly approaching an obstacle ahead (e.g. preceding vehicle, toll gate bar-
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rier, etc.)
When there is a structural object (billboard, low ceiling, fluorescent light, etc.)
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above the uphill road ahead
When driving on a narrow road or through under a low overhead structure (bridge,
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tunnel, fly-under, etc.)
When driving on an uneven road surface
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When there is a metal object, bump, or protrusion on the road surface
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When vehicle front part is raised or lowered depending on loading conditions
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When the direction of radar sensor is misaligned by strong impact applied on an
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area around the radar sensor, etc.
When there is an obstacle (guard rail, etc.) by the roadside at the entrance to a
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curve
When the front of your vehicle is pointing upwards (caused by putting a heavy load
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in the trunk etc.)
When driving through an area filled with steam or smoke
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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 may 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.
Obstacles not detected
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The radar sensor cannot detect plastic obstacles such as traffic cones. There may
also be occasions when the sensor cannot detect pedestrians, animals, bicycles,
motorcycles, trees, or snowdrifts.
A camera sensor cannot detect obstacles in the following situations:
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A camera sensor is directly receiving intense light, such as sunlight.
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Visibility is poor because of bad weather or other reasons.
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The sensor temperature is extremely high.
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The headlights are not turned on in darkness such as at night or in a tunnel.
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LS460/LS460L_U (OM50G04U)
4-5. Using the driving support systems
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