Why does the car horn sound automatically?

1.Loose sealing is susceptible to moisture: Although the inside of the horn is sealed, if the seal is not tight, if it enters the fog or there is water vapor in the air in the internal space when washing the car, the water vapor can easily cause the contacts to be damp and unable to work properly.

2.Poor contact of solenoid terminals: some horns inside the electromagnetic coil enameled wire terminal joint is connected by aluminum metal rivet crimping, non-reliable soldering connection, if the insulating paint on the enameled wire at the end is not clean or the rivet crimping is not reliable, it is easy to produce virtual connection faults, resulting in poor horn work.

This kind of failure is the quality of the horn, which cannot be repaired, and can only be replaced with new parts.

3.Contact ablation: If the horn is pressed for a long time, it is easy to cause the horn contact to be ablated and the impedance will be generated, the current flowing through the electromagnetic coil will be weakened, and the electromagnetic attraction will not be able to attract the armature to drive the diaphragm to vibrate normally, resulting in hoarse or even no sound.

However, when the horn is constantly pressed, if the instantaneous strong current passes through the impedance, it can still work normally, so it will be good and bad.

If it's a horn, it's because the line touched the water when you washed the car, or the humidity in the parking area was too heavy. The sensitivity of many alarms will be slightly stronger, such as for a long time, it is recommended to go back to the modification shop to change one.

1. First of all, don't be blind, find a professional repairer to help you solve it. When the car is driving, try to avoid honking for a long time, as pressing the horn too much will affect its own operation sensitivity. In the long run, it is easy to cause the problem of burning horn contacts. This is dangerous.

2. If in summer, when washing the car on a rainy day, don't let the horn get wet and get a lot of water, in case you find that the water is in, quickly deal with the wipe, and if you don't get the horn into the water, you also need to buy a new one.

3. The car horn keeps ringing, which must be caused by the power cord of the horn being energized for a long time. There are two factors that cause the horn power cord to be energized for a long time:

First, the buttons of the steering wheel are stuck in the position of long-term power-on;

Second, the horn relay contact can not be disconnected normally, long-term contact.

The car horn keeps ringing may be caused by the power cord of the horn being energized for a long time, it is recommended to go to the store and ask the master to help check it to see what the fault is. There could be two reasons for the horn to go off automatically

First, the key of the reverse disk is issued and stuck in the position of long-term power-on.

2. The contact of the horn relay cannot be disconnected normally and is in contact for a long time.

Generally, when you press the horn, don't press it very hard, some car owners develop bad habits, press it with brute force, and the horn is easy to press badly.

Check the circuit, there is a problem with the circuit. The horn suddenly rang on its own. The main cause of this problem is that the button is stuck, or the button spring is broken.

Pat the button with your hand to loosen it and lift it, if this method cannot eliminate the fault, you should disassemble it to check whether the button spring is broken, if necessary, you can replace it with a new spring. When the horn suddenly makes a continuous sound for no reason, it indicates that the live wire in the horn circuit is normal, and there is a short circuit in the iron circuit, then the horn and the iron wire can be removed, so that the horn does not make a sound, and then the meter is used to check the iron line to find out the short circuit point and eliminate the fault.

The car horn keeps ringing, which must be caused by the power cord of the horn being energized for a long time. There are two factors that cause the horn power cord to be energized for a long time:

First, the buttons of the steering wheel are stuck in the position of long-term power-on;

Second, the horn relay contact can not be disconnected normally, long-term contact.

The car horn is made by the vibration of a metal diaphragm. The automotive electric horn is composed of an iron core, a magnetic coil, a contact, an armature, a diaphragm, etc. When the driver presses the horn switch, the current passes through the coil through the contact, the coil produces a magnetic force to absorb the armature, forces the diaphragm to move, the armature moves to disconnect the contact, the current is interrupted, the coil magnetic force disappears, the diaphragm recovers its original position together with the armature under the action of its own elasticity and spring sheet, the contact closure circuit is turned on again, and the current flows through the contact through the coil to generate magnetic force, repeating the above action.

This is repeated and the diaphragm vibrates continuously, resulting in a sound sound. The soundboard is rigidly connected to the diaphragm, which makes the vibration smooth and more pleasant to the ear (i.e., the electromagnet principle).

There could be two reasons:

The first one may be caused by the quality of the speaker itself.

The second possibility is that the plug of the horn is connected or loose, and the contacts of the horn are in constant contact.

The contact point of the horn switch has a unique edge layer, and the steering wheel is disassembled and gently sanded with fine sandpaper. Due to the large vibration of the horn, it is easy to cause the plug of the special harness to be loose and poorly contacted. Clamp it with a wire clamp, and it's OK.

The horn rings by itself, that is, the line or switch line is in contact with the electricity, and the horn will sound without a switch.

It's the tactile chip inside that is loose or falling off, and it hits the switch, so it keeps calling.

Generally, when you press the horn, don't press it very hard, some people develop a very bad habit and press it with brute force, most of them are broken like this.

It may be connected to the power, or it may be malfunctioning.

The wire touched the wire, so it rang by itself.

The solution to the car horn that keeps ringing is missing:

1. When our car horn keeps ringing or has failed, don't blindly repair it yourself, find a professional repairer to help you solve it.

2. During the driving of the car, try to avoid pressing the horn for a long time, which will easily lead to the problem of burning the horn contact in the long run.

3. When washing the finger car on a rainy day, try to prevent the horn from being wet and a large amount of water from entering.

The car horn kept ringing, and the search must have been caused by the power cord of the horn being energized for a long time. There are two factors that cause the horn power cord to be energized for a long time:

First, the buttons of the steering wheel are stuck in the position of long-term power-on;

Second, the horn relay contact can not be disconnected normally, long-term contact.

Summary. If the vehicle will sound when driving autonomously, it may be that there is a problem with your module, there may be a problem with this anti-theft module, or there may be a problem with the body module.

Why does the car horn sound automatically?

Dear, this question is up to me, it takes a little time to type, please be patient, thank you!

Hello friend, if this car horn will sound automatically, the general reason is that this horn will automatically sound due to the trigger of this entry into this burglar alarm. If you look at the parking position, is there something distracting? Or stop next to this high-voltage transformer.

In general, if there is interference, it will cause your vehicle to alarm for no reason, causing the horn to sound.

Is it on the move?

If the vehicle will sound when driving autonomously, it may be that there is a problem with your module, there may be a problem with this anti-theft module, or there may be a problem with the body module.

But changing modules is too expensive.

Is there a better way.

This is better if you don't have a friend like this module, if there is a problem, this one must be replaced. If you don't replace it, this won't solve the problem.

Ok thank you!

Okay, you're welcome.