How to Check the Led Headlight If It Do not Work?

April 22, 2022
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The technology of headlights is not complicated, but your headlights are likely to stop working suddenly. For drivers who drive at night, the problem of headlights can cause serious trouble. If you suddenly encounter problems on the road, you need to pay attention and first determine the actual cause of headlamp failure.

The troubleshooting method of headlights will completely depend on the specific problem you face. First, check whether one or two headlights do not work, or whether the low beam or high beam of the headlight stops working.

First, determine the exact problem. They are just dark or do not work at all. It is difficult to see them at night. There is water in them and so on. If they stop working completely, either the bulb burns out or there is a serious electrical problem. Electrical problems can be very expensive and require a lot of manpower to solve, but in fact, this problem rarely occurs. So start by looking at the light bulb.

You can also unscrew the bulb at the rear of the headlamp lens of the latest models. After removing the bulb, check it correctly. Will it burn out? Does it melt, blacken or discolor? If so, you need to replace it with a new one.

You can buy replacement bulbs from your local car store. Insert this or more new bulbs and make sure you don't touch the glass part of the bulb with bare fingers.

Grease from our bare fingers can cause bulbs to wear out faster and even explode. After installing the bulb, you need to try the lamp. If it still doesn't light up, you have an electrical problem or any other serious problem. You should consult your local mechanic for this.

If only high beam or low beam lamps do not work, there may be a problem with the bulb. The reason may be that the bulb is burnt out, or there may be a problem with the relay or switch of the high beam lamp.

In most cases, both low beam and high beam stop working, and there may be some faults in the control switch of bulb or high beam or relay. In this case, you need to replace the switch, relay or bulb itself.

If you find that only one headlamp is not working properly, it may be the reason why the relevant components or wires are not working properly. This is a very common problem of HID headlights.

If both headlights don't work, there must be a problem with the grounding and power supply, or the old bulb is burnt out. Two bulbs usually don't burn out at the same time. But according to the rules, you need to check it first. Check the grounding and power system. If you find any problems or need to replace the bulb, please repair it. There may be a wiring problem.

If water enters your lens due to cracks, leaks or any holes in the car lens, the headlights may stop working. You can remove the lens with a new plastic lens and carefully drill a small hole in the bottom of the lens.

Be careful not to hit the light bulb. Just let the water run out and repair it correctly with silica gel. Look for water. You can also reseal the car lens with high-quality silicone around the lens. If the problem persists, it is best to change the lens.

High beam inoperative

Blow bulb

This is the most common corrective problem.

High beam fuse blown

Fuses usually protect the wiring of the lamp from any damage, and extreme current can flow through the circuit of the high beam lamp. The short circuit may be the cause of the blown fuse.

Relay problem

The switch does not directly control the bulb of the headlamp, but the relay does this. The switch of the headlight can supply power to the relay, so as to supply power to the headlight. This can protect the car's headlights, which can protect the high current of the high beam.

Hid generator failure

This is common in HID or xenon headlights.

Other reasons include incorrect headlight bulbs, headlight switch problems, etc.

Low beam inoperative

There may be faulty fuse, bulb, relay near battery, connector connected to headlamp bulb socket, etc. If the low beam does not have the proper current, it may stop working. If you let the vehicle stand for a long time to make the energy system sustainable, sometimes the battery will have problems. If you want to know more about the durability of headlights and the inability of cars to drive.

How to solve the problem:

For these problems, you usually have two solutions; You can call the mechanic or do it yourself. It's easy to fix wire problems or burned bulbs without any professional support. However, there are few serious problems that require you to contact the mechanic, because the problem can be solved only by using some main tools and important equipment. If one of your headlights is working, but the other stops working, the problem may be that the bulb is burned out. You need to replace the bulb of the headlight to solve the problem.

The best way to check whether your hid headlamp capsule is in poor condition; You need to carefully remove the bulb first. Replace the working bulb with another inoperative bulb. If even the good bulb of the headlamp cannot work or cannot be turned on, it indicates that there is a serious problem with the socket, which should be solved by professional technicians. If both headlights stop working, the problem may be in the wire, fuse or socket, but not in the bulb.

These are just the simple and most important steps you can follow to understand the headlights problem and the right way to solve it.

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