2015 Cadillac ATS Owner Manual - Page 285

9-62 Driving and Operating . approaches a detected lane marking without using a turn signal in that direction. It may also provide an LDW alert by flashing A amber as the lane marking is crossed. Additionally, there will be three beeps, or the driver seat will pulse three times, on the right or left, depending on the lane departure direction. The LKA system does not continuously steer the vehicle. If LKA does not detect active driver steering, an alert and chime may be provided. Move the steering wheel to dismiss. Roads with poor lane markings, such as two-lane roads. Fuel Use of the recommended fuel is an important part of the proper maintenance of this vehicle. When driving in the U.S. and Canada, to help keep the engine clean and maintain optimum vehicle performance, we recommend using TOP TIER Detergent Gasolines. See www.toptiergas.com for a list of TOP TIER Detergent Gasolines. If the LKA system is not functioning properly when lane markings are clearly visible, cleaning the windshield may help. LKA assistance and/or LDW alerts may occur due to tar marks, shadows, cracks in the road, temporary or construction lane markings, or other road imperfections. This is normal system operation; the vehicle does not need service. Turn LKA off if these conditions continue. When the System Does Not Seem to Work Properly The system performance may be affected by: . . Close vehicles ahead. Sudden lighting changes, such as when driving through tunnels. Banked roads. .