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4-5. Using the driving support systems
IS350/300/200t_U (OM53D18U)
■ Obstacles not detected
The sensor cannot detect plastic obstacles such as traffic cones. There may also be occa-
sions when the sensor cannot detect pedestrians, animals, bicycles, motorcycles, trees,
or snowdrifts.
■ Situations in which the pre-collision system does not function properly
The system may not function effectively in situations such as the following:
● On roads with sharp bends or uneven surfaces
● If a vehicle suddenly moves in front of your vehicle, such as at an intersection
● If a vehicle suddenly cuts in front of your vehicle, such as when overtaking
● In inclement weather such as heavy rain, fog, snow or sand storms
● If the vehicle is skidding when VSC is not operating
● When your vehicle is steeply inclined
● When only part of your vehicle’s front end collides with, or contacts, a vehicle or object
in a frontal collision
● When the radar sensor moves off position due to its surrounding area being subjected
to a strong impact
● When an obstacle suddenly appears in front of the vehicle due to the steering wheel
being turned sharply or another cause
■ Automatic cancelation of the pre-collision system
When a malfunction occurs due to sensor contamination, etc. that results in the sensors
being unable to detect obstacles, the pre-collision system will be automatically disabled.
In this case, the system will not activate even if there is a collision possibility.
■ When there is a malfunction in the system or if the system is temporarily unusable
The pre-collision system warning light will flash and warning messages will be displayed.
(P. 477, 486)
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