2014 Cadillac ATS Owner Manual - Page 275

Driving and Operating When the System Does Not Seem to Work Properly If the LDW symbol does not appear when the system is on and the vehicle is traveling at least 56 km/h (35 mph): . 9-61 { Warning LDW does not provide a warning to help avoid a crash, unless it detects the lane markings. LDW may not detect the lane markings if the camera sensor is blocked by dirt, snow, or ice, or if the windshield is damaged. It may also not detect a lane on winding or hilly roads, or in conditions that can limit visibility such as fog, rain, or snow, or if the headlamps or windshield are not cleaned or in proper condition. Keep the windshield, headlamps, and camera sensors clean and in good repair. LDW warnings may occur due to tar marks, shadows, cracks in the road, or other road imperfections. This is normal system operation; the vehicle does not need service. When the vehicle is started, the LDW indicator on the instrument cluster will come on briefly. If LDW is on, the LDW indicator will appear green if the system detects a left or right lane marking while the vehicle is traveling at 56 km/h (35 mph) or greater. If the vehicle crosses a detected lane marking without using the turn signal in the lane departure direction, this indicator will change to amber and flash. In addition, three beeps will sound from the left or right side, or the Safety Alert Seat will pulse three times on either the left or right side of the seat, depending on the lane departure direction. The lane markings on the road may not be seen. The camera sensor may be blocked by dirt, snow, or ice. The windshield may be damaged. The weather may be limiting visibility. . . . This is normal operation; the vehicle does not need service. Clean the windshield. Lane markings may not be detected on curves, highway exit ramps, or hills; or due to poor visibility. If the LDW camera system does not seem to operate properly, cleaning the outside of the windshield in front of the camera sensor may correct the issue.