Lexus LS460 Owner's Manual page 373

362
4-5. Using the driving support systems

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 intersec-
tion

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
subjected 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 sensors being unable to detect obstacles, the pre-crash safety 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
The pre-crash safety system warning light will flash and warning messages
will be displayed. (P. 826, 832)
LS460_EE (OM50D49E)