Lexus ES350 Manual page 315

CAUTION
Limitations of the pre-collision system
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Do not overly rely on the pre-collision system. Always drive safely, taking care to
observe your surroundings and checking for any obstacles or other road hazards.
Failure to do so may cause an accident resulting in death or serious injury.
When the sensor may not be correctly detecting the vehicle ahead
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Apply the brakes as necessary in any of the following situations.
When water or snow thrown up by the surrounding vehicles hinders the function-
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ing of the sensor
When your vehicle is pointing upwards (caused by a heavy load in the luggage
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compartment etc.)
Vehicles that cut in suddenly
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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.
Otherwise, the system may not function correctly and could result in an accident.
Keep the sensor and grille cover clean at all times.
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Clean the sensor and grille cover with a soft cloth so you do not mark or damage
them.
Do not subject the sensor or surrounding area to a strong impact.
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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.
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Do not attach accessories or stickers to the sensor, grille cover or surrounding
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area.
Do not modify or paint the sensor and grille cover.
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Do not replace them with non-genuine parts.
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ES350_300h_OM_OM33A60U_(U)
4-5. Using the driving support systems
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