2015 Ford Fusion Owner Manual Printing 1 - Page 201

Driving Aids Why is the feature not available (line markings are gray) when I can see the lane markings on the road? Driving at high speeds in curves Previous feature activation happened within the last one second Ambiguous lane markings (mainly in construction zones) Rapid transition from light to dark or vice versa Sudden offset in lane markings ABS or AdvanceTrac activation Camera blockage due to dirt, grime, fog, frost or water on the windshield Driving too close to the vehicle in front of you Transitioning between no lane markings to lane markings or vice versa Standing water on the road Faint lane markings (partial yellow lane markings on concrete roads) Lane width too narrow or too wide Camera not calibrated after a windshield replacement Driving on tight roads or on uneven roads Why does the vehicle not come back into the middle of the lane always, as expected, in the Aid or Aid + Alert mode? High cross winds Large road crown Rough roads, grooves, shoulder drop-offs Heavy uneven loading of the vehicle or improper tire inflation pressure If the tires have been exchanged (including snow tires), or the suspension has been modified 198 Fusion/Mondeo (CC7), enUSA