Kia K900: The LDWS may not warn you even if the vehicle leaves the lane, or may warn you even if the vehicle does not leave the lane when

• The lane can't be visible due to snow, rain, stain, a puddle or other environmental conditions.
• The brightness of the outside changes suddenly such as tunnel enter/exit.
• Not turning on the headlight at night or in the tunnel, or light level is low.
• Difficult to distinguish the color of the lane from the road.
• Driving on a steep grade or a curve.
• Light such as street light, sunlight or oncoming vehicle light reflects from water on the road.
• The lens or windshield is stained with foreign matter.
• The sensor cannot detect the lane because of fog, heavy rain or heavy snow.
• The surrounding of the inside rear view mirror temperature is high due to a direct ray of light.
• The lane is very wide or narrow.
• The lane line is damaged or indistinct.
• The windshield is fogged by humid air in the vehicle.
• The shadow is on the lane line by a median strip.
• The sensor cannot distinguish the lane from the road due to the dust.
• There is a mark similar to a lane line.
• There is a boundary structure.
• The distance from vehicle ahead is very short or the vehicle ahead drives hiding the lane line.
• The vehicle vibrates heavily due to road conditions.
• The lane number increases or decreases or the lane lines are crossing.
• Putting something on the dashboard.
• Driving with the sun in front of you.
• Driving in areas under construction.
• The lane line is more than two in either side (Left/Right)