Why my car low beam works but not high beam?

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. ... However, if the relay goes bad, you won't be able to switch between high and low beams.

1. What would cause high beams not to work?
2. How do I know if my high beam relay is bad?
3. Is there a fuse for high beam headlights?
4. Why are my high beams not bright?
5. Is high beam and low beam the same bulb?
6. How do you check a headlight relay?
7. How do I know if my headlight sensor is bad?
8. Which bulb is the high beam?
9. Why are my low beam lights so dim?
10. Is low beam same as headlight?
11. How high should my low beams be?
12. When should you use high beams?

What would cause high beams not to 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.

How do I know if my high beam relay is bad?

Headlights doors don't give way:

This is one of the first and most common signs that your relay is bad. When the doors of your headlights do not give way or open, it is because the relays are not producing enough power to even open the headlight door.

Is there a fuse for high beam headlights?

Blown High Beam Fuse

Fuses protect the wiring from circuit problems, such as short circuits. A fuse protects the wiring from damage, in case too much current is being drawn through the high beam circuit.

Why are my high beams not bright?

The most common reasons why headlights don't get bright enough are that they either a lack of voltage in the circuit, the wrong size bulb, or the lens of the headlight is oxidized or faded. ... If that is fine then the lens on the headlamp may be faulty. These things would need to be checked.

Is high beam and low beam the same bulb?

High beams are distinguished from low beams by their brighter light. They are sometimes referred to as “main beam” headlights. These terms are synonymous, and the term used depends entirely on the region. High beams point straight ahead, while low beams are angled down towards the road.

How do you check a headlight relay?

Open the hood, locate the fuse box with the headlight relay or relays, and open it. Put your ear close to the relay and listen. Alternately, you can wedge the handle of a long screwdriver into your ear, and touch the screwdriver point to the relay. You can hear the relay click though the screwdriver like a stethoscope.

How do I know if my headlight sensor is bad?

Sensor failure results in the headlights illuminating during broad daylight when not needing to be on, or the ambient light sensor could have worn out. Whichever the case, either replace the entire windshield, or replace the headlight sensors.

Which bulb is the high beam?

H1 bulbs are used to power the brighter, high-beam, headlight that illuminates the surroundings over a long range. H7 bulbs, on the other hand, turn on when the car is being used in the regular, low-beam setting. They light up a narrower and shorter range, which is adequate for daily driving.

Why are my low beam lights so dim?

Over time, your lenses can become oxidized—leading to a foggy, cloudy, or yellowed lens appearance. The opaque shade caused by oxidation does not let as much light pass through as clear lenses. This will leave your headlights looking dim, even if you have brand-new bulbs.

Is low beam same as headlight?

Low beams are the 'normal' lights your car headlights emit and are used when driving at night or in a dim or dark setting such an indoor parking lot. Low beams have a short-range focus and are sometimes referred to as 'dipped beam'. ... They are a way for other drivers to see you.

How high should my low beams be?

The top of the low beam shining on the wall should be at or slightly below the height of the center of the headlight lens for most vehicles. You should expect the light pattern to be higher on the right side (passenger side) to illuminate road signs and lower on the driver's side to prevent blinding other drivers.

When should you use high beams?

High beam headlights should be used at night, whenever you're unable to see enough of the road ahead to drive safely. Low visibility at night can be scary for even the most experienced drivers.