Lexus CT200h Operating Manual page 242

242
4-5. Using the driving support systems
WARNING
Cautions regarding the assist contents of the system
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By means of alarms and brake control, the pre-collision system is intended to assist the
driver in avoiding collisions through the process of LOOK-JUDGE-ACT. There are
limits to the degree of assistance the system can provide, so please keep in mind the
following important points.
Assisting the driver in watching the road
●
The pre-collision system is only able to detect obstacles directly in front of the vehicle,
and only within a limited range. It is not a mechanism that allows careless or inatten-
tive driving, and it is not a system that can assist the driver in low-visibility conditions. It
is still necessary for the driver to pay close attention to the vehicle' s surroundings.
Assisting the driver in making correct judgement
●
When attempting to estimate the possibility of a collision, the only data available to
the pre-collision system is that from obstacles it has detected directly in front of the
vehicle. Therefore, it is absolutely necessary for the driver to remain vigilant and to
determine whether or not there is a possibility of collision in any given situation.
Assisting the driver in taking action
●
The pre-collision system' s braking assist feature is designed to help reduce the sever-
ity of a collision, and so only acts when the system has judged that a collision is
unavoidable. This system by itself is not capable of automatically avoiding a collision
or bringing the vehicle to a stop safely. For this reason, when encountering a danger-
ous situation the driver must take direct and immediate action in order to ensure the
safety of all involved.
When the sensor may not be correctly detecting the vehicle ahead
■
Apply the brakes as necessary in any of the following situations.
When water or snow thrown up by the surrounding vehicles hinders the functioning
●
of the sensor
When your vehicle is pointing upwards (caused by a heavy load in the luggage com-
●
partment etc.)
Vehicles that cut in suddenly
●
Vehicles with small rear ends (trailers with no load on board etc.)
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Motorcycles traveling in the same lane
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Handling the radar sensor
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Observe the following to ensure the pre-collision system can function effectively:
Keep the sensor and front grille cover clean at all times.
●
Clean the sensor and front grille cover with a soft cloth so you do not mark or dam-
age them.
Do not subject the sensor or surrounding area to a strong impact.
●
If the sensor moves even slightly off position, the system may become inaccurate or
malfunction. If the sensor or surrounding area is subject to a strong impact, always
have the area inspected and adjusted by your Lexus dealer.
Do not disassemble the sensor.
●
Do not attach accessories or stickers to the sensor, grille cover or surrounding area.
●
Do not modify or paint the sensor and grille cover.
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CT200h_OM_OM76174U_(U)
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