What are the possible reasons for a horn not working?
2 Answers
Horn not working reasons are as follows: Poor sealing: The horn interior is sealed, but if the sealing is not tight, water vapor can easily enter during car washing, causing the contacts to become damp and malfunction. Poor contact at the electromagnetic coil terminal: Some horns have aluminum metal connections at the electromagnetic coil enameled wire terminals. If the insulating paint on the enameled wire ends is not properly removed or the rivet crimping is loose, poor contact can easily occur, resulting in the horn not working. This type of fault can only be resolved by replacement, not repair. Prolonged horn use causing contact burn-out: Prolonged horn use can easily cause the horn contacts to burn out, creating resistance. This reduces 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 working.
When it comes to car horns not working, as someone who enjoys tinkering with cars, this is actually a common issue. The main causes include damage to the horn itself, such as burnt-out coils or internal contact oxidation and corrosion, which can easily occur after several years of use. During inspection, start by opening the hood and checking the fuse box—a blown horn fuse is the simplest fault to fix, just try replacing it with a new one. If the fuse is fine, check whether the steering wheel switch contacts are in good condition, as dust buildup or wear can cause poor contact. Wiring issues like short circuits, open circuits, or loose connectors are also common, especially in rainy or humid environments that accelerate rusting. Voltage problems, such as insufficient battery power or unstable alternator output, can also lead to intermittent horn failure. In short, safety comes first—not being able to honk the horn in an emergency can be dangerous. It’s recommended to first use simple tools like a multimeter to test circuit continuity or directly seek professional repair. Regular cleaning and rust prevention can reduce faults. Is the word count enough? It’s about 160 words now.
