Black plate (48,1)Cadillac STS Owner Manual - 2011How the System WorksLDW uses a camera located between the insiderearview mirror and the windshield to detect the lanemarkings.@ (Lane Departure Warning): To turn LDW on or off,press the CONFIG hard key located on the navigationradio, then press @. See “Configure Menu” in the indexof the Navigation System manual. The symbol will behighlighted when the feature is active.When the vehicle is started, the LDW symbol that islocated in the instrument panel cluster will briefly comeon to indicate that the light is operational.LDW only operates at speeds of 35 mph (56 km) orgreater. If LDW is turned on when traveling at thesespeeds, the LDW symbol will appear green if thesystem detects a left or right lane marking. This symbolwill change to amber and flash and three beeps willsound if you cross a detected lane marking withoutusing the turn signal.LDW is not currently operating and will not warn you ifthe LDW symbol does not appear.When the System Does Not Seem To WorkProperlyThe LDW symbol will not appear when the system ishaving difficulty seeing the lines on the road or if theview of the camera on the windshield is blocked withmud, dirt, snow, ice, or slush, if the windshield isdamaged, or when weather limits visibility, such aswhile driving in fog, rain, or snow conditions. This isnormal operation, the vehicle does not need service.For cleaning instructions, see Washing Your Vehicle onpage 6‑109.LDW warnings may occasionally occur due to tarmarks, shadows, cracks in the road, or other roadimperfections. This is normal system operation, thevehicle does not need service.3-48