Why do BMW automatic headlights stay on during the day?

[LilyRose]

The reason why BMW automatic headlights stay on during the day is that the photosensitive sensor of the vehicle's automatic headlights has malfunctioned and cannot receive external light sources. The working principle of automatic headlights is as follows: The photosensitive sensor generates voltage signals based on changes in external light conditions, which are then fed back to the automatic headlight control module. After data analysis, the module determines whether the lights should be turned on. Automatic headlights refer to the car headlights automatically determining whether to turn on or off based on external lighting conditions. During driving, after rotating the headlight switch to the AUTO position, the car headlights will automatically turn on when encountering dimly lit areas and automatically turn off when lighting conditions improve.