Where is the headlight relay?

Find the headlight relay closure: Usually, it is under the hood of the car. The point where your fuse panel is most likely located. On the other hand, it may also be located inside the cab of the car, this would be the case if your car comes with an interior fuse box.

Is there a headlight relay?

All relays, including your headlight closure relay, are used to keep high amperage and voltage systems away from the driver as a safety measure. Used in “flip-up” lights, which fold out of the body of the vehicle, headlight closure relays are essential for headlight operation.

How do you check a headlight relay?

How Can I Test a Headlight Relay?

1. Turn on Your Lights. Turn on your lights.
2. Listen for the Click. Open the hood, locate the fuse box with the headlight relay or relays, and open it.
3. Replace the Relay. Have an assistant turn on the headlights.
4. Multimeter Tests.

What happens when a headlight relay goes bad?

One of the most common symptoms of a faulty headlight switch is issues switching between headlight modes. If the headlight switch fails or wears out it can cause problems operating the headlights. A broken switch may only work on certain modes, or may cause them to come on and off intermittently and erratically.

What happens when a relay goes bad?

A bad ignition relay will not only cause starting problems to your vehicle, but it can also cause stalling or the vehicle, draining and damaging of the battery and the power loss in the dashboard lights.

Why do my headlights not work but my brights 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 do I know if I have a bad relay?

You want to feel and listen for any clicks. If you feel and hear clicks, the relay works on one side – the side with the energizing circuit and coil. However, if there was no sound from the horn, the relay has a problem along the contact circuit.

How can you tell if a relay fuse is bad?

Can a bad relay cause a parasitic draw?

A failed ECM power relay can also cause a battery drain or dead battery. If the relay shorts it can leave power on to the computer, even when the vehicle is turned off. This will place a parasitic drain on the battery, which will eventually cause it to go dead.