The Lane Departure Warning (LDW) is designed to alert drivers of unintended lane changes. Audible, visual and haptic warnings are triggered to restore the driver's attention in cases where the car drifts or changes lanes without using a turn signal.
Lane Departure Warning is designed to notify the driver if the vehicle is leaving the lane of travel by shaking the steering wheel and flashing a display signal. It is a supplemental assist, and does not replace the need for extreme care and attention by the driver.
Lane Departure Warning will not work under all circumstances. It functions when it is able to detect painted lane markings. It cannot function if the lane markings cannot be seen clearly, if the lines are faded, or during dusk without headlamps on, with snow, rain, sleet, dust, leaves or standing water on road, sudden changes in brightness such as shadows, tunnel exits/entrances, low sunlight angle causing reflections, multiple lane markings or criss-crossed lines, tar crack sealer and cracked or broken road surfaces. It also may not function on very rough roads, when walls, curbs or concrete barriers are close by, or if following another car too closely. Since it “sees” the lane markings using a camera in the upper windshield area, it is imperative this area be clear and free of blockage such as stickers, dirt, snow, tinting material, markings and labels. Avoid putting objects on the dashboard that may reflect light or images onto the system camera area.