What are the causes of the automatic driving light switching failure in the Volkswagen Tharu?
2 Answers
Introduction to the causes of the automatic driving light switching failure in the Volkswagen Tharu: Fault in the settings: It can be restored. Fuse has blown: It needs to be replaced. For a blown fuse, generally, both sides will not light up. If only one side is not working, it is probably not a fuse issue. A fuse, also known as a current fuse, is defined by the IEC127 standard as a "fusible link." Its main function is overload protection. When a fuse is correctly installed in a circuit, it will melt and cut off the current when the current abnormally rises to a certain level and heat, thereby protecting the safe operation of the circuit. Fault in the lighting harness: Inspection and troubleshooting are required.
As a veteran driver who has owned the Volkswagen Tharu for several years, I can tell you that automatic headlight switching failures are quite common, likely due to issues with the light sensor. The sensor is located behind the windshield, and if it gets covered in dust or fogged up, it won't detect accurately, preventing the lights from turning on automatically. Another possibility is a malfunction in the control module—if the car's computer system freezes or has a software glitch, the switching function may stop working. Sometimes, loose wiring connections or blown fuses can completely interrupt signal transmission. I recommend regularly checking while driving, such as wiping the sensor surface with a soft cloth after parking, and avoiding hard impacts to prevent damage. If the problem occurs frequently, it's best to visit a 4S店 for a computer diagnosis. Don't underestimate this issue—if the lights don't turn on automatically at night, it poses a significant visibility risk. In short, avoid DIY fixes and rely on professional inspections for reliability.
