2011 Lexus HS 250h Owners Manual - Page 230
2011 Lexus HS 250h Manual
Page 230 highlights
2-4. Using other driving systems NOTICE n In the following situations, the LKA will not work, or will not perform reliably: l When lane markers are interrupted or are not present, such as before a tollbooth. l When lane markers are only on one side of the road. l When driving on a sharp curve. l When lanes are extremely narrow or extremely wide. l When the vehicle leans to one side an unusual amount due to a heavy load or 2 improper tire inflation pressure. l When the following distance between your vehicle and the vehicle ahead is When driving extremely short. l When the lane markers are broken, "Botts' dots", or "Raised pavement marker". l When lane markers are obscured or partially obscured by sand, dirt, etc. l When driving on a particularly bright road surface, such as concrete. l When driving on a road surface that is bright due to reflected light. l When driving in a location where the light level changes rapidly, such as the entrance to or exit from a tunnel. l When sunlight or the headlights of oncoming vehicles are shining directly into the camera lens. l When driving on roads that are branching or merging. l When pavement lane markers are difficult to see due to rain, snow, fog, etc. l When driving on a road surface that is wet due to rain, previous rainfall, standing water, etc. l 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. l When headlight brightness is reduced due to dirt on the lenses, or when the headlights are misaligned. l When driving with a strong crosswind. 227