It’s common for one headlight to quit working on one setting, either high beam or low. That’s often a sign that the bulb is burnt out. But if one or both headlights go out completely, then it’s likely there’s a problem with the headlight relay, the fuse, the module, the headlight switch, the dimmer switch, or even a wiring fault.
Common reasons for this to happen:
- Bulbs are burnt
- Fuses are blown
- Faulty relay
- Faulty ground from the light
- Faulty headlight switch
- Faulty sockets
How important is this service?
A nonworking headlight presents a safety risk. Get a thorough inspection done as soon as possible.