2013 Cadillac ATS Owner Manual - Page 148

5-38 Instruments and Controls This can occur under the following conditions: . Object Detection System Messages 24 GHz RADARS OFF This message displays when driving in certain areas where there may be radar interference. Adaptive Cruise Control (ACC), Forward Collision Alert (FCA), and the Active Emergency Braking System may not work or may not work as well. The vehicle does not need service. FRONT CAMERA BLOCKED CLEAN WINDSHIELD This message displays when the camera is blocked. Cleaning the outside of the windshield behind the rearview mirror may correct the issue. The Lane Departure Warning system will not operate. Forward Collision Alert (FCA) may not work or may not work as well. The radar is not clean. Keep the radar sensors free of mud, dirt, snow, ice, and slush. Clean the entire front and/or rear of the vehicle. For cleaning instructions, see Exterior Care on page 10‑81. Heavy rain or snow is interfering with the radar object detection or camera performance. . AUTOMATIC COLLISION PREP UNAVAILABLE This message displays when the Active Emergency Braking System has been unavailable for some time. The Active Emergency Braking System does not need service. This message may also be displayed if there is a problem with the StabiliTrak system. LANE DEPARTURE WARNING UNAVAILABLE This message displays when attempting to activate the Lane Departure Warning (LDW) system when it is temporarily unavailable. The LDW system does not need service. This message could be due to the camera being blocked. Cleaning the outside of the windshield behind the rearview mirror may correct the issue. FORWARD COLLISION ALERT OFF This message displays when the Forward Collision Alert has been turned off.