Lexus ES350 Manual page 271

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
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shadow covers the lane markers
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
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entrance to or exit from a tunnel
When sunlight or the headlights of oncoming vehicles are shining directly into the
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camera lens
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
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water, etc.
When the vehicle experiences strong up-and-down motion such as when driving
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on an extremely rough road or on a seam in the pavement
When headlight brightness at nighttime is reduced due to dirt on the lenses, or
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when the headlights are misaligned
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 changing the tires
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Depending on the tires used, sufficient performance may not be maintainable.
Warning messages for LDA system
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Warning messages are used to indicate a system malfunction or to inform the driver
of the need for caution while driving. (P. 772, 779)
ES350_300h_OM_OM33A60U_(U)
4-5. Using the driving support systems
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