What Causes Car Headlights to Stop Working?

[VonJoy]

The reasons for car headlights not working include: burnt-out bulbs, overheated wires, damaged relays or combination switches, open/short circuits in wiring, blown fuses, and poor electrical connections. The first step should be checking whether the fuse is intact, as sudden headlight failure is most commonly caused by a blown bulb fuse. If the bulb lights up briefly when turned on but then goes out, this may indicate poor wiring connections or open/short circuits - short circuits can easily burn out bulbs. If bulbs frequently burn out, check whether the generator voltage regulator is set too high. Sudden headlight failure requires prompt attention, and it is recommended to visit a certified professional repair shop or 4S dealership for inspection.