What are the reasons for the low beam not working in the Lavida?

[McEli]

Details of the reasons why the low beam of the Volkswagen Lavida does not work are as follows: Severely depleted battery: After the headlights are turned on, the battery needs to work in conjunction with the generator to supply power. Therefore, the brightness of the headlights is normal for about 2 hours after the car starts driving at night. After that, since the battery can no longer continue to supply power, the brightness of the headlights decreases and varies with the engine speed. Additionally, the engine cannot be started with the starter after the engine is turned off. Overheated wires: This leads to an increase in circuit resistance, resulting in a decrease in the luminous intensity of the headlights. In severe cases, the headlight circuit may short-circuit due to the melting of the wire insulation layer, and even cause the circuit to burn out or lead to a car fire accident.