Your car horn is integral to keeping yourself and other road users safe at the wheel. However, car horns can sometimes suffer from issues such as a lowered tone or simply the inability to sound at all. If you’re able to replace your car horn yourself you’ll often save quite a bit of money. Here’s our guide to taking the DIY approach.
Quiet car horn
- If the car horn is sounding at a low volume, then have a friend pop the hood and check it again. If it’s overly quiet, the chances are that one of the horns (many cars actually have more than one) has stopped working and will need to be replaced.
- Locate the car horn, which is usually either behind the car’s grille or on the radiator core support. The horn usually resembles a fuse, with wires coming off it. You’ll need to remove the wire connector, which you can do by pressing down on the lower end of the connector and then pulling it out.
- Remove the mounting bolt and the spade jugs, which are attached to the wiring, and give them a good clean before re-attaching all of the components.
- Ask your helper to try the horn again.
- If this doesn’t help to recover the horn, then you’ll need to actually purchase a new horn and replace it.
- The first thing to do is check your fuse box to check the specific fuse used to sound your horn (your operator’s manual will tell you which one it is).
- Remove it using a pair of needle nosed pliers or tweezers. If the metal strip inside the fuse is broken, then the fuse has failed and is no longer functional, so will need to be replaced.
- Try the horn again – if it works, problem solved.
- If the issue isn’t the fuse, then check to see if the airbag light is illuminated on the dashboard. Issues with the airbag can sometimes affect the horn, with the bag having expanded, and interfered with the clock spring.
- If the airbag light is on, then this is the one circumstance in which it’s best to take your car to a technician. Replacing the airbag to stop it hindering the horn is a more complicated task.