What Can It Be If The Horn Does Not Work?

Ever happened to you while driving in traffic your car horn stops to work even how much harder you try to press in this post we’ll know What can it be if the horn does not work

What Can It Be If The Horn Does Not Work?

What can it be if the horn does not work

The first thing you should do if your car’s horn stops working is to check the fuse box. It’s usually found in the engine compartment or behind the glove box. Replace the fuse in the exact location specified in the owner’s manual.

If the problem persists or the new fuse blows immediately, the problem is somewhere else in the electrical system. Check and replace the horn relay, which can also be found inside the fuse box, before looking for a broken wire.

How To Fix Broken Horn

To know what can it be if the horn does not work, first we need to check a few things which include

1. A fuse has blown.

2. Relay

3. a faulty wire

4. a faulty horn

5. Broken clock spring

Diagnosing The Horn

Before knowing what can it be if the horn does not work we first need to check the start of the problem

  1. To test the horn relay, use a multimeter. If you’re not sure how to test a relay, you can try this old trick. Locate another relay on the fuse box that is the same as the horn relay.
  2. One of the wires on your horn will be brown or black. This is the earth wire, connect a +12 volt feed line from the positive terminal of the battery to the horn. When you touch the horn terminal, the horn should beep.

 Checking The Horn With A Multimeter

What can it be if the horn does not work

  1. Set the meter to a range that can read battery voltage, such as DCV or 15V or something similar.
  2. Check your setup by reading the battery voltage directly from the terminals. It should be somewhere around 12v.
  3. Unplug the horn and insert the probes, one on each side, into the connector. Set the meter somewhere visible from the driver’s seat.
  4. Watch as you press the horn button. If the meter reads battery voltage, the problem is most likely your horn; if it does not, you most likely have a wiring problem.

Fixing The Issues

Follow these steps to fix the above issues-

Replacing Fuse-

Your car’s horn requires electricity to function. In the event of a blown fuse, the circuit is disrupted and the horn is rendered inoperable. To find the exact location of the horn fuse, consult your vehicle’s owner’s manual or the fuse box cover.

Changing Relays-

car turns off while driving

Find out where the horn relay is located in your specific model of vehicle. The information may be found in the owner’s manual for your vehicle. Relays are typically found in the engine compartment or under the steering wheel on the left side.

Hopefully, the wiring diagram will be drawn on the facing. Always disconnect the vehicle’s battery before beginning the replacement.

Faulty Connection-

What can it be if the horn does not work

Corrosion on the connector causes poor conductivity. You don’t have to replace the corroded connector; in most cases, the connector can be cleaned with WD-40. When cleaning the connector, make sure the battery is disconnected and the connector is completely dry before plugging it back in.

Faulty Horn-

What can it be if the horn does not work

Poor conductivity is caused by corrosion on the connector. The corroded connector does not have to be replaced; in most cases, it can be cleaned with WD-40. Before plugging the connector back in, make sure the battery is disconnected and the connector is completely dry.

Another cause of a non-functioning horn is a faulty horn button on your car’s steering wheel. Depending on how frequently the horn is used, the button may eventually wear out and stop working.

Fixing Clockspring

A clock spring is a device that is located directly behind your steering wheel. It keeps the airbag and horn wires connected when you turn the steering wheel.

To replace or test the clock spring, you must remove the steering wheel. Clock springs are inexpensive and can be purchased online for any make and model.

Replacing Car Horn

To replace the car horn you should follow these steps for easy replacement

Step 1: Confirm the horn assembly’s location. The horn is usually located on the radiator support or behind the vehicle’s grille.

Step 2: Remove the battery. Remove and set aside the negative battery cable.

Diagram demonstrating how to disconnect the electrical connector from the horn

Remove the electrical connector in step three. Push down on the tab and slide the electrical connector off the horn.

Step 4: Take the retaining fastener out. Using a ratchet or wrench, remove the horn’s retaining fasteners.

Step 5: Take out the horn. Pull the horn out of the vehicle after removing the electrical connector and fasteners.

Step 6: Install the new horn. Set the new horn in place.

Step 7: Screw in the fasteners. Replace the fasteners and tighten them until they are snug. Reinstall the electrical connector in step eight. Insert the new horn’s electrical connector.

Step 9: Reinstall the battery. Reconnect and tighten the negative battery cable.


There are numerous reasons what can it be if the horn does not work. When looking for the cause, always start with the most obvious cause, such as a blown fuse or a faulty relay.

In any case, it is recommended that laypeople visit a workshop because they can easily cause more damage to their vehicle.



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