horn for my car
Electric air horn for car
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Replace a Spare part Horn – a defective one or if the limit of use has been already reached. Find out useful information about Horn
The sound signal faults
- mechanical damage to the horn;
- incorrectly functioning signal button, it sticks;
- jamming signal in the active position;
- damage to the wiring.
Symptoms of sound signal faults
- complete absence of sound;
- too quiet sound of a horn;
- only one of the signals works.
Causes of sound faults
- oxidation or damage to the contacts;
- blown fuses;
- relay fault;
- moisture ingress into the system;
- open contacts;
- short circuit.
Diagnostics
To test the signal, you must first determine the nature of the fault. If the cabin light becomes dim when the signal button is pressed, then there is a short circuit.
Checking the horn performance is possible by connecting a 12V light bulb instead of it. If when the horn button is pressed, it lights up, the horn itself is faulty.
It is also necessary to check the horn fuse. You need to look its location and number in the technical documentation of the vehicle.
On vehicles with airbags you need to check the correctness of the airbag packaging. Improper positioning of the airbags may interfere with understeering horn contacts. Airbag check needs to be carried out only at a service station, because the correct airbag packaging is an essential safety element.
It is also worth checking out the clock spring, because its deformity or malfunction may affect the signal quality.
Replacement and repair of the sound signal
In case of breakage or malfunction of the wiring, it must be replaced. To determine the failure spot, you can measure the wire resistance. Nevertheless, most often all the contacts are replaced at once.
An attempt to restore the horn may include clearing contacts and mechanism terminals. As a preventive measure of the contacts failure, a special lubricant must be applied to the exposed wires and contacts, that prevents oxidation.
The main signal is located near the car radiator. Replacing the horn is carried out very quickly. To do this, disconnect the fasteners and contacts and connect the new part. When using non-original parts itis also required to adjust them, which can only be done in a service shop.
Helpful tips on operation, causes of faults, troubleshooting, and service intervals