Why is the car horn not working?
2 Answers
Horn is the acoustic signal device of a car. During driving, the driver emits necessary sound signals as required and regulated to warn pedestrians and alert other vehicles, ensuring traffic safety, as well as for urging movement and transmitting signals. There are 3 main reasons why a car horn may stop working: 1. Poor sealing: If the sealing is not tight, water vapor can easily enter during car washing, causing the contacts to become damp and malfunction. 2. Poor contact at the electromagnetic coil terminal: If the insulating paint on the enameled wire end is not completely removed, or if the rivet crimping is not secure, it can easily lead to poor connection, resulting in the horn not working. This type of fault can only be resolved by replacing the horn. 3. Prolonged horn usage causing contact erosion: Keeping the horn pressed for a long time can cause the contacts to erode, creating impedance. This weakens the current passing through the electromagnetic coil, preventing it from attracting the armature to drive the diaphragm for normal vibration, leading to the horn not sounding.
Last time when I was driving, my car horn suddenly stopped working, which was really frustrating. Upon inspection, it might be a blown fuse. You can find and replace the corresponding fuse in the fuse box located under the steering wheel or in the engine compartment. Alternatively, it could be a relay issue—the small box that controls the current might be faulty, causing the horn to fail. Another common cause is aging wiring with poor contact, such as broken wires or loose connections, which require thorough troubleshooting. It might also be that the horn itself is damaged; prolonged use leading to moisture or dust buildup can cause it to fail. It's recommended to start with a simple fuse check. If that doesn't work, head to a professional repair shop immediately. Safe driving is no joke—don't risk being unable to honk in an emergency situation on the road.
