Quick Answer: Why Is One Headlight Not Working?

Why is my left headlight not working?

If the bulb still doesn’t light up, there is a fault in the wiring harness or a corroded bulb socket and it’s time to call your mechanic for expert assistance.

The likely cause is a fuse, headlight relay, headlight switch, dimmer switch or a wiring fault.

About the only cause that is an easy fix is a blown fuse..

How do you fix low beam headlights not working?

4 Steps to Fix a Low Beam Headlight BulbFind the blown out bulb. … Buy the replacement bulb. … Get your tools ready. … Disconnect the negative terminal on the battery. … Remove the trim pieces. … Find the headlight holder. … Disconnect the cables from the headlight. … Remove the headlight bulb from the bulb housing.

Why are my high beams not working?

By far the most common reason your brights will stop working is from a blown fuse or a bad relay. … Or, it could be a bad relay. If the headlight relay has failed, it may not respond when you attempt to switch the high beams on. Replacing the relay should restore the system and get your high beams working once again.

Why do my low beams not work but high beams do?

2. Headlight Fuse or Relay is Bad. 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.

How much does it cost to fix headlight wires?

It can cost you $100 per hour. The reason behind the problem may be a faulty headlight switch. Often times, if the headlight works only on high beam or low beam, the dimmer switch may have broken. The average cost of replacing the headlight switch or the dimmer switch is in the range of $150-$250.

Is there a fuse for each headlight?

The first, and easiest, component to check is the headlight fuse. Depending on how your headlight circuit is set up, there may be one fuse or multiple fuses for the headlights. If you find a blown fuse, then replacing it may fix the problem. … You should find battery voltage on both sides of the fuse.

How do you troubleshoot headlights?

Headlight Fuse Keeps Blowing OutUnplug the light, pull the switch, and see if the fuse blows. … Make sure you have purchased the correct wattage of bulb.Ensure that you do not have a faulty or damaged bulb.Check and see if your high beam bulb is the issue. … Check all wired connections and look for any exposed wiring.

What are the symptoms of a bad headlight relay?

Symptoms of a Bad or Failing Headlight Closure RelayHeadlight doors don’t open. One of the first symptoms of a failed headlight closure relay is headlight doors that don’t open. … Headlight doors stuck open. … Headlight doors operate erratically and open or close on their own.