Lexus IS220d 2012 Manual page 245


When a billboard or other metallic structure appears to be in the vehi-
cle's direct line of travel due to driving on a hill.

When an extreme change in vehicle height occurs

When the axis of the radar is out of adjustment

When passing through certain toll gates

When driving on a bridge.
When the system is activated in the situations described above there is also a
possibility 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.

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 inter-
section

If a vehicle suddenly cuts in front of your vehicle, such as when overtak-
ing

In inclement weather such as heavy rain, fog, snow or sand storms

When your vehicle is skidding with the VSC system off

When an extreme change in vehicle height occurs

When the axis of the radar is out of adjustment

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.
IS250/220d/200d_EE
2-4. Using other driving systems
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233