Lexus 2013 IS250 Owner's Manual page 248

246
4-5. Using the driving support systems

When driving on a road surface that is bright due to reflected light

When driving in a location where the light level changes rapidly, such as the
entrance to or exit from a tunnel

When sunlight or the headlights of oncoming vehicles are shining directly into
the camera lens

When driving on roads that are branching or merging

When driving on a road surface that is wet due to rain, previous rainfall, stand-
ing water, etc.

When the vehicle experiences strong up-and-down motion such as when driv-
ing 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
when the headlights are misaligned

When driving on winding roads or roads that are uneven

When driving on rough or unpaved roads

When changing the tires
Depending on the tires used, sufficient performance may not be maintainable.

Warning messages for the LDA system
Warning messages are used to indicate a system malfunction or to inform the
driver of the need for caution while driving. (P. 485)
IS250_EE(OM53B11E)