Lexus LS 460 2017 Manual page 375

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Situations in which the pre-crash safety 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 an extreme change in vehicle height occurs
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 sub-
jected to a strong impact
If an obstacle in front of the vehicle is small
When the system judges that the driver performed a collision avoidance operation
via the accelerator pedal, brake pedal, or steering wheel
Automatic cancelation of the pre-crash safety system
When a malfunction occurs due to sensor contamination, etc. that results in the sen-
sors being unable to detect obstacles, the pre-crash safety system will be automati-
cally disabled. In this case, the system will not activate even if there is a collision
possibility.
When there is a malfunction in the system
The pre-crash safety system warning light will flash and warning messages will be
displayed. (P. 607, 614)
4-5. Using the driving support systems
375
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