COMMENTS ON TROUBLE SYMPTOM
Any of the followings are suspected: bad weather (heavy rain, snow, icing), unfavorable road condition, ambient environment, or vehicle condition (heavy load, wheel alignment, tire punctuation), blocked FCM/LDW/AHB-ECU sensor or its surroundings (cracks, contamination, icing, fog on the windshield or the sensor), a faulty FCM/LDW/AHB-ECU.