What to Do If the Horn Keeps Sounding?

[DelMason]

The horn switch and relay may fail to separate after prolonged use, causing the car horn to keep sounding. In this case, you can remove the main airbag on the steering wheel to check the condition of the contacts. Locate the horn relay in the engine compartment fuse box and check whether the relay is properly closing and opening.

[OSavannah]

I remember one time when I was driving, the horn suddenly started blaring nonstop, which was incredibly annoying. I immediately pulled over and turned off the engine, but it kept honking. Scared, I quickly popped the hood, found the battery, and used a wrench to disconnect the negative terminal to finally silence it. Later at the repair shop, they discovered that the steering wheel button had been stuck due to spilled drink residue. The mechanic cleaned it, and the problem was fixed. Actually, common causes are just a few: stuck buttons, wiring short circuits, or a stuck relay. If you encounter this situation, stay calm—first, cut the power to prevent draining the battery. If you can't handle it yourself, call a professional. Also, be careful not to place small objects near the steering wheel area to avoid them falling in and jamming the buttons. If you've modified anything like an anti-theft device, pay extra attention to wiring issues.

[LeBradley]

As someone who works on cars all day, I've encountered too many cases of horns blaring non-stop. The first thing the car owner should do is immediately stop the vehicle and disconnect the negative terminal of the battery, otherwise the battery could be drained in half an hour. Common causes include stuck buttons, short circuits in wiring, stuck relay contacts, or alarm system malfunctions. You can do some basic troubleshooting yourself: check if there's any debris stuck in the steering wheel buttons and try tapping to see if it resets; then inspect the horn relay in the fuse box by removing it; finally, examine the wiring for any damage. But never forcibly pry the buttons, as this can easily damage the airbag clock spring. I've seen cases where people forcibly cut the horn wires, resulting in a short circuit that fried the ECU. My recommendation is to have the car towed for professional repair after disconnecting the battery, as specialized equipment is needed to accurately locate wiring faults.

[MacMolly]

Last time when I was driving my kid to school, the horn suddenly started blaring uncontrollably, which made me so nervous that my hands were shaking. I quickly pulled over and turned off the engine, but the sound still didn't stop. Fortunately, I remembered my husband mentioning to disconnect the battery. Later, the mechanic said a small card from the air vent had slipped into the steering wheel and got stuck on the button contacts. This kind of mechanical jam is the most common cause, followed by aging wires causing a short circuit. The solution is simple: disconnect the battery to silence the horn immediately, then check around the buttons for any foreign objects and clean them out. If that doesn't work, you'll need to visit an auto repair shop—they have specialized tools to dismantle the steering wheel for inspection. The key is not to drive while the horn is blaring, as it's both disturbing to others and dangerous. It's important to keep the car interior tidy, especially avoiding placing small items near the steering wheel.