What are the reasons for a car horn suddenly not working?
2 Answers
The reason for a car horn suddenly not working is contact erosion. If the horn is pressed for a long time, it can easily cause the horn contacts to erode, resulting in a certain impedance that weakens the current flowing through the electromagnetic coil (reducing the electromagnetic attraction). At this point, it will definitely be unable to attract the armature to drive the diaphragm to vibrate normally, leading to a hoarse sound from the horn or even the possibility of it not working at all. The horn is the sound signal device of a car. During the driving process, the driver can emit necessary sound signals as needed and according to regulations to warn pedestrians and alert other vehicles, ensuring traffic safety. It is also used for urging movement and transmitting signals.
A couple of days ago, my car horn suddenly went mute, which really puzzled me. This is usually caused by a blown fuse—those little protectors of the circuit—once they go, there's no sound at all. Another possibility is an issue with the steering wheel buttons, like water damage or wear leading to poor contact, resulting in no response when pressed. It could also be that the horn itself has aged or been damaged by water and stopped working. My car is getting older, and I often run into these minor issues. If you usually pay attention to dust prevention and check the wiring—like seeing if the wire connections are loose or gently tapping the horn body—sometimes it might work for a few honks. It's best to have a professional inspect the electrical system during regular maintenance to avoid any hazards on the road.
