Automatic High Beam System: Notes

External factors	Detail
Weather	Too bad weather such as fog, snow, heavy rain
Windshield glass	Dirt, condensation, icing on the windshield Cracks or breakage around the FCM/LDW/AHB sensor detection portion
Preceding vehicle or oncoming vehicle	No exterior lights of a preceding vehicle or oncoming vehicle is turned on Only right or left exterior lights are turned on, or the vehicle is a motorbike. There is any light source, which is similar to vehicle exterior lights A preceding vehicle is equipped with a reflection plate
Road conditions	On too steep gradients The vehicle is driven on a winding road or around a tight bend Driving on poor surface such as cobbled There is too bright a luminous body in front of the vehicle (e.g. reflective traffic sign, an electric noticeboard, a delineator).
Vehicle condition	The vehicle is inclined due to overload, flat tire, or towing, etc.
System	The temperature in the FCM/LDW/AHB is 100°C (212°F) or more, or -40 °C (104°F) or less. The system can detect no illumination or light source as the camera in the FCM/LDW/AHB is hindered by an object. FCM/LDW/AHB-ECU