Toyota AVENSIS Manual page 273

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Conditions in which the function may not operate correctly
In the following situations, the front sensor may be unable to recognize lane
markers causing the lane departure warning function to operate incorrectly.
However, this does not indicate a malfunction.
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When driving through an area, such as a tollbooth, a crossing or before a
ticket checkpoint
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When driving on a sharp curve
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When lane markers are extremely narrow or extremely wide
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When the vehicle leans to one side an unusual amount due to a heavy load
or improper tire inflation pressure
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When the following distance between your vehicle and the vehicle ahead is
extremely short
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When the lane markers are yellow (These may be more difficult for the sys-
tem to recognize compared to white markers.)
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When the lane markers are broken, Botts' dots (raised pavement markers)
or stones
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When the lane markers are on a curb etc.
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When lane markers are obscured or partially obscured by sand, dirt, etc.
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When there are shadows on the road running parallel with lane markers, or
if a shadow covers the lane markers
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When driving on a particularly bright road surface, such as concrete
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When driving on a road surface that is bright due to reflected light
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When driving in a location where the light level changes rapidly, such as the
entrance to or exit from a tunnel
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When sunlight or the headlights of oncoming vehicles are shining directly
into the camera lens
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When driving on roads that are branching or merging
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When driving on a road surface that is wet due to rain, previous rainfall,
standing water, etc.
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When the vehicle experiences strong up-and-down motion such as when
driving on an extremely rough road or on a seam in the pavement
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When headlight brightness at nighttime is reduced due to dirt on the lenses,
or when the headlights are misaligned
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When driving on winding roads or roads that are uneven
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When driving on rough or unpaved roads
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When the windshield is dirty, or if raindrops, condensation or ice are adher-
ing to the windshield.
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When the heater is blowing to the feet, the upper part of the windshield may
get fogged up and have a negative effect.
●
When cleaning the inside of the windshield, touching the lens or getting
glass cleaner on the lens may have a negative effect.
4-5. Toyota Safety Sense
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