What should I do if my car headlights don t turn on? What to do if the headlights of the car are not

There are many reasons why car headlights do not light up, including: burned-out bulbs, heated wires, damaged relays or combination switches, open wires, short circuits, open circuits, damaged fuses and poor line contact. First of all, you should check whether the fuse is good, because the headlight suddenly does not come on, and most of the cases it is caused by the blown out of the bulb fuse.

Introduction to car headlights:

Car headlights, also known as car headlights, car LED daytime running lights, as the eyes of the car, are not only related to the external image of a car owner, but also closely related to safe driving at night or in bad weather conditions. The use and maintenance of car lights cannot be ignored.

If the headlight is damaged, it is usually replaced with a similar fixture. Some cars are equipped with high-intensity discharge headlamp HIDs, which generate a high-density light source through high-voltage arcing emissions generated by their pre-engineered electronic systems. Note that ordinary quartz-halogen bulbs cannot be used here.

If the headlights are not lit, you need to check the headlights for cracks, because although surface cracks will not affect the lighting performance of the headlights, moisture will seep into the lamps along the cracks, which will inevitably reduce the service life of the bulbs. The calibration of the headlight direction should also be included in the list of maintenance items, because in order to ensure maximum safety for the driver, the headlights must be able to provide good forward illumination for the moving vehicle.

If the bulb turns on when the lights are turned on, it may be that the line connection is poor or there is an open circuit short circuit, and the short circuit is easy to burn out the bulb. If the bulb burns out frequently, check that the voltage regulator of the generator is too high. The headlights of the car suddenly do not light up, and it needs to be dealt with in time, so it is recommended to go to a regular professional repair shop or 4S shop for maintenance, which is more secure.

First of all, see whether the fuse is burned out.

Turn on the headlight switch, the high and low beams are not on, first check whether the fuse is blown out in the fuse box, and then check whether there is any fault between the car light switch and the dimming switch.

When using a screw to lap the live wire of the dimmer switch with the far-beam and low-beam binding posts respectively, the following situations are divided:

1. The lights are on, indicating that the dimmer switch is faulty;

2. If the high beam is bright and the low beam is not bright when lapping - connecting, the fault is between the dimmer switch and the headlight or between the low beam.

3. If the high beam of the headlight is not on, you should check whether the high beam indicator is on, if it is on, it means that the fault is between the wiring board and the headlight, if it is not on, it means that there is a fault between the wiring board and the dimmer switch.

4. If only one headlight is on and the other is not, it may be that the filament is burned or the wiring is broken, or the iron is poor (the brightness of the headlight is weak).

Car light bulbs are often burned.

I don't know if there are any riders who will burn out the bulbs regardless of the size of the lamps in the process of using the car. There are several reasons for this:

1. The voltage regulator is faulty and the voltage is too high;

2. Poor contact of battery wires, resulting in too high no-load voltage of the generator;

3. There is a short circuit between the generator armature and the magnetic field coil.

If you turn on the light switch and the bulb burns out immediately, you should check whether there is a short circuit between the charging lines. If the bulb is burned out frequently, check whether the voltage of the generator voltage regulator is adjusted too high.

The brake light is not on.

When driving the brake, the brake light of the car does not light up, and the main reasons are: the filament is burned, the tie is poor, the brake light switch is out of order or there is an open circuit in the line.

To check, remove the brake bulb and check the filament. If the filament is intact, you can use a screwdriver or wire to scrape the terminal post of the brake light live wire with the lap iron while stepping on the brake pedal

1. If there is fire, the brake light is not on, indicating that the iron is poor;

2. If there is no fire, it means that the brake light switch may be out of order or the circuit is open.

Check whether the fuse is blown out: the lights are bright to indicate that the dimmer switch has fallen, if the lap wire, the high beam and low beam are not bright, and the fault is between the dimmer switch and the headlight or between the low beam;

Check if the bulb of the car light is burned: the cause is that the voltage regulator is faulty or the voltage is too high, there is a short circuit between the generator armature and the magnetic field coil;

Check whether the brake light is on: the main reasons are broken filament, poor tie iron, brake light switch failure or open circuit in the line;

Check whether the car tail light is on: The reason is that the tail light filament is burned out or the tail light is badly hooked.

If the headlights of the car are not on, you can go to the repair shop to fix it, and you go to the repair union to check it for you.

If the headlights of the car are not lit, the first thing to check is whether there is a possibility of leakage in the wiring of the car, and then it is necessary to check whether the headlights are damaged, resulting in no light, and then solve the problem after troubleshooting step by step.

Check the bulbs. Line. Fuse. Light switch.

Hello, you can follow the steps to detect:

1. Change the bulb first and try it (open the front cover, there is generally a screw cover on the side of the lamp body, and replace the bulb.) If it is inconvenient, only remove the lamp in order to, but before you have to remove the bumper, it is more troublesome).

2. Whether the wiring harness of the test body is loosely plugged into the headlights.

3. Check the insurance.

4. Check whether there is a circuit problem and try it with a table. Basically, the above points can solve most of the problems, if it still doesn't work, it is recommended that you go to the 4S store.

The treatment method for the headlights not to light up is: 1. Check whether the fuse is good; 2. Check whether the voltage of the generator voltage regulator is too high. The reasons why the headlights don't light up are:

1. The bulb of the lamp is burned out; 2. Poor contact of the lamp with iron; 3. The lamp relay or combination switch is damaged; 4. Short circuit and open circuit of the power cord of the lamp; 5. The headlight fuse is damaged. The maintenance methods of the headlights are: 1. Regularly check the sealing of the headlights, and find that the sealing ring between the light distribution mirror and the reflector is damaged, which needs to be replaced in time; 2. Clean the mirror regularly, it needs to be replaced when it turns black and the luminosity decreases; 3. Clean the dust and stains on the bulb regularly.

The car headlights are not on, you don't need to ask me, this must be this light is broken, you are not on, right you see that the headlights are not on, you don't want to repair it yourself, it is really not bright, you go to the auto repair department, ask him to repair it, you repair it yourself, and then repair it.

If it's just a headlight that doesn't light up, it should be a faulty headlight or a poor contact with the headlight connector. If the headlights on both sides are not on, you need to check the fuse, relay switch, etc.

It is better to ask about the car repair station.

Find a repair shop to see if it's a wiring problem or a light bulb problem, and fix it.

Just change to a new one, or you can try to shoot a few times, maybe you can get better.

There are two common faults of automobile headlights and their corresponding elimination. The headlight does not light up, and the fault phenomenon turns on the switch, and all the lights are not on. 2. Cause of failure: () The power cord is disconnected or grounded before the light is turned on.

What to do if the headlights of the car are not on

When the front light is not working, the bulb usually burns out. In this case, you just need to replace it with a new bulb. If the headlights still don't light up after replacing the new bulb, it means that the other parts of the car have a blue cavity problem.

In this case, please go to the repair shop or 4S shop in time to ask professionals to check and repair to prevent the vehicle from being used normally at night.

There are many reasons why car headlights do not light up, in addition to the burnt out of the bulb, including damage to the light control switch, falling off the connection wire, lack of power in the car battery, etc. This will be explained in detail below.

1.The light control switch is damaged

If the light control switch is broken, turning on the headlights will definitely not respond. If the headlights do not light up due to damage to the light control switch, it is relatively simple to repair, but the cover needs to be replaced with a new set of light control switches.

2.The cable is off:

If the car is constantly bumpy on the road, it may also be due to the vibration of the car that causes the headlight connection cable to fall off. In this case, simply reinstall the headlamp's cables.

3.The car battery is dead:

If the car is idle for a long time or for a long time after parking, the battery can easily lose power. At this time, the car will experience symptoms such as dimming of the headlights and difficulty starting. In this case, it is enough to charge the battery in time.

If the instrument indicator is not lit, first check the power supply fuse of the dashboard, and replace it if it is blown. Disassemble the dashboard, the lights are generally at the back of the dashboard, replace the lights that are not lit, and generally the individual lights are not lit to indicate that there is no problem with the fuse and wire, the main reasons are as follows

1. The lamp of the dashboard is damaged and needs to be replaced in time;

2. If the power supply line of the dashboard is broken, there is an open circuit or short circuit, which will also cause the car dashboard to not light up;

3. If the power supply fuse of the car dashboard is broken, there will naturally be no power supply, and the dashboard will not light up.

Precautions in the use of the car dashboard:

1. When the indicator light is on, the odometer should be observed immediately, if the cumulative mileage reaches or exceeds l00,000km, the timing toothed belt must be replaced, otherwise the timing toothed belt may break, so that the engine can not work normally.

2. After replacing the new timing toothed belt, it is necessary to open the rubber plug outside the reset switch on the mileage dial, and press the reset switch inside with a small round bar to extinguish the indicator light of the timing toothed belt.

3. After replacing the new timing toothed belt, remove the odometer and adjust all the readings on the odometer to the 0 position.