2011 Mercedes CL-Class Owner's Manual - Page 368

366 Display messages Display messages Possible causes/consequences and M Solutions Active Lane Keeping Assist is deactivated and temporarily inoperative if: Rthe windshield is dirty in the camera's field of vision. Rvisibility is impaired due to heavy rain, snow or fog. Rthere are no lane markings for a longer period. Rthe lane markings are worn, dark or covered, for example by dirt or snow. Active Lane Keeping Assist is operational again and the display message disappears if: Rthe dirt (e.g. slush) drops away while the vehicle is in motion. Rthe system detects that the camera is fully operational again. If the display message continues to be displayed: X On-board computer and displays Active Lane Keeping Assist Currently Unavailable See Oper. Manual Clean the windshield. Active Lane Keeping Assist Inoperative Active Blind Spot Assist Currently Unavailable See Oper. Manual Active Lane Keeping Assist is faulty. X Visit a qualified specialist workshop. Active Blind Spot Assist is temporarily inoperative if: Rthe sensors are dirty. Rits function is impaired due to heavy rain or snow. Rthe radar sensor system is outside the operating temperature range. Rthe radar sensor system is temporarily inoperative, e.g. due to electromagnetic radiation emitted by nearby TV or radio stations or other sources of electromagnetic radiation. The yellow 9 indicator lamps also light up in the exterior mirrors. Active Blind Spot Assist is operational again and the display message disappears if: Rthe dirt (e.g. slush) drops away while the vehicle is in motion. Rthe system detects that the sensors are fully available again. Rthe radar sensor system is back within the operating temperature range. If the display message continues to be displayed: X X Clean the sensors (Y page 414). Restart the engine.