What would cause my headlights to stop working?
Most total headlight failures are caused by a bad component like a fuse, relay, or module. Wiring problems can also cause both headlights to stop working.
Why do my high beams work but not my headlights?
Like all electrical systems, the headlights in your vehicle have a fuse in the circuit to prevent too much electricity from reaching the bulb. There will also be a headlight relay that switches power from the low beams to the high beams. If the fuse goes bad, you likely won’t have any headlights at all.
How do you fix headlights that won’t turn on?
My Headlights Won’t Work
- Inspect the headlights to make sure the filaments are not broken.
- Check the headlight fuses in the car’s fuse box.
- Check the connectors, wiring harness and socket into which the headlight bulbs are plugged.
- Pull out the headlight relay if the headlights still do not work.
Can a fuse be partially blown?
It seems to me that the fuse in a partially blown condition is behaving like a rheostat. First, and most commonly, when too many lights or plug-in appliances draw power from the circuit, it can overload the capacity of the fuse and cause the metal ribbon inside the fuse to melt through.
Why are the headlights not turning on in my Subaru?
Bad wiring can cause a fuse to blow, but it can also manifest itself in many other ways. Even if the fuse is still intact, a problem with the wiring in your Subaru could cause the headlights not to turn on. Because the wiring is so complex, it’s best to leave these repairs to the people who really know what they’re doing.
Why are the low beams in my Subaru not working?
If the low beams in your Subaru aren’t working, it might seem like a good idea to use the high beams–but that can be dangerous, as well. If the high beams work, but the low beams don’t, there are a number of possible causes. Below, we list four of the most common ones. 4. Burned-Out Bulbs
How are the headlights connected to the headlight relay?
The headlight relay plays an important role in turning the lights on. The switch you flip to turn on the headlights isn’t directly connected to them; instead, it activates a relay. This relay then sends the necessary electricity to the lights.