What are the reasons for car headlights not working?

[OSophia]

The reasons for car headlights not working include: blown headlight fuse, burnt-out headlight bulb, damaged headlight relay and combination switch, or poor contact in the headlight wiring. Car owners can visit a nearby repair shop or 4S store for a detailed inspection of the vehicle. Solutions for car headlights not working: 1. Check if the fuse is in good condition; if the fuse is damaged, replace it. 2. Wiring issues: If the wiring connections are loose or poorly connected, simply tighten the wiring connectors. 3. Overheating wires: Overheating wires can increase resistance, reducing the brightness of the headlights. In severe cases, the headlight wiring may short circuit due to the melting of the wire insulation. Allow the wires to cool down. 4. If the contacts of the headlight wiring control relay or combination switch are corroded or stuck, preventing the circuit from opening or closing, replace them.