Why do automatic headlights stay on during the day?

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Automatic headlights staying on during the day is usually a sensor issue. Sensor factors: For example, headlights will automatically turn on when entering tunnels, during rainy weather, or in dimly lit areas. Automatic headlights operate based on light intensity detection, so they may also activate on cloudy days, which is normal. If the headlights remain on in bright sunlight, you should visit an authorized brand service center or local repair shop to replace the vehicle's photoresistor sensor. Usage methods and functions of automatic headlights: When using automatic headlights, keep them clean. Avoid placing too many objects on the dashboard that might block the light sensor and prevent normal operation. Regularly inspect the headlight covers to ensure there are no water droplets and protect them from impact by foreign objects. The system automatically turns the headlights on or off based on changes in light intensity. When ambient light becomes dim, the headlights will automatically turn on, and they'll turn off when light levels recover, thereby improving driving safety and preventing potential hazards.