How do I know if my low beam relay is bad?
Have an assistant turn on the headlights. If you hear the relay click, you know the coil is working, but you don’t know about the contacts. If you don’t hear the click, your relay is probably bad. The safest way to test a headlight relay is to replace it with a known good one.
Why would my low beams not work?
Most total headlight failures are caused by a bad component like a fuse, relay, or module. High beam headlights don’t work or low beams don’t work. The cause: A burned out bulb, or a problem with the high beam switch or relay. The fix: Replace the bulb, switch, or relay.
Can AutoZone test a relay?
A relay can be checked with a jump cable, a voltimeter, an ohmimeter or a test light. If the terminals are accessible and the relay is not controlled by a computer, the fastest method will be a jump cable and a test light.
Why do my high beams not work?
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.
Are low beams and fog lights the same?
Are fog lights the same as low beams? No. Fog lights are a separate beam, only come on certain cars and are not required by law. Fog lights are typically found in the front bumper of a car or truck in their own separate assembly.
What causes a low beam light to stop working?
If a headlight fuse blows, it could cause the headlights to stop working. Most headlight systems are also designed with a relay that switches the power between low beam and high beam headlights.
Is it possible to fix a bad low beam headlight?
Fortunately, fixing a bad low beam is a straight forward process in the majority of vehicles that can be done by most people without just a few hand tools. If replacing your headlight bulb does not work, there may be an electrical issue in your vehicle that should be addressed by a professional. Identify a blown out bulb.
Is it safe to drive with high beams on?
No one wants to be driving along at night and have their headlights go out. In many cases, the high beams will still work when the regular headlights stop, but it’s just not safe to drive around with your high beams potentially blinding other drivers.
Do you need to replace both high and low beams?
Some vehicles use a single bulb for both high and low beams while others do not. If the high beam on the same side is also out, it may be one bulb. You do not need to purchase specific bulbs for each side, but identifying which is the blown out bulb will help you to replace it without having to start the vehicle again.