What's the reason for the automatic driving light malfunction in the Passat?

[OBriella]

There are many reasons that may cause the vehicle's warning light to illuminate. It is recommended to record a video when the light comes on and show it to the repair technicians at the 4S shop. Introduction to vehicle lights: Vehicle lights refer to the lamps on a vehicle, serving as tools for road illumination during nighttime driving and as signaling devices for various driving indications. Vehicle lights are generally categorized into headlights, taillights, turn signals, etc. Common light signals: When the traffic light turns green and the car in front doesn't move: flash the headlights once. When encountering strong lights at night that dazzle the eyes: flash the headlights twice as a reminder, and turn on hazard lights to express dissatisfaction. When another vehicle wants to change lanes: flash the headlights once to indicate "agreement", or flash continuously to indicate "refusal". If a neighboring vehicle has a problem: flash the headlights three times. If the following vehicle is too close: intermittently illuminate the brake lights.