Toyota 2015 Sienna Manual page 302

302
4-5. Using the driving support systems
WARNING
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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
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functioning of the sensor
When your vehicle is pointing upwards (caused by a heavy load in the lug-
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gage 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
Observe the following to ensure the pre-collision system can function effec-
tively:
Keep the sensor and front grille clean at all times.
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Clean the sensor and front grille 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 Toy-
ota dealer.
Do not disassemble the sensor.
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Do not attach accessories or stickers to the sensor, grille or surrounding
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area.
Do not modify or paint the sensor and grille cover.
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