A horn that no longer works can potentially become dangerous and must be repaired as soon as possible. You should certainly always, on your Nissan Altima, be able to report your presence thanks to this vital device. It may well simply be affected and have a unusual sound on your Nissan Altima, but nevertheless it is a problem that you must remedy. The objective of this article is to go along with you step by step in this action because you will realise that you can do it yourself without going to the garage for your Nissan Altima.
First, start by examining where the failure came from. Based on this you will know what repairs to do.
We will guide you step by step through the different tests:


Try honking the horn with the cover open. If you hear a sound, but much weaker than usual, it means that some tubes are damaged but some still work. indeed, on your Nissan Altima there are several trumpets that carry sound.
Step two, try to track down the horn. You will find it nearby the radiator at the front of your car, near the grille. The grille is the small grille at the front of vehicles that allows air to enter while protecting the parts of your Nissan Altima.

Horn cables unplugged on my Nissan Altima

Once the horn is identified, we will try to disconnect and reconnect the connecting wires in order to perform a new test. To do this, take the two connected wires, pull them out by their ends towards you. There should also be a horn fixing bolt that you need to unscrew. Then clean it all up with a brush or something, then reconnect it all. Try honking your horn again. Does it work?
You have found the solution for your Nissan Altima! If nothing changes, let’s go a little further in the tests and explanations.
You are faced with several solutions at this stage.

Faulty horn horn on my Nissan Altima

You could buy another tube to change the defective ones if you have been able to identify them on your Nissan Altima thanks to the noise.

Fuse blown

you might want to also check the fuses. To find this fuse box, we invite you to visit our previous article on the subject:
“Where to find the fuse box on a Nissan Altima”
You should also look in your vehicle owner’s manual for the fuse references of the horn fuse that you must determine precisely.
Once the fuse is identified, you can remove it using a pair of pliers. To find out if it is burned, look at the metal part. If this one is blown, your fuse has blown on your Nissan Altima. It must as a consequence be replaced. If it looks new, it should not be questioned.
You can get this fuse in any car shop or garage. Test the horn again after the fuse has been exchanged. Is your horn working again? Congratulations! If this still doesn’t work for your Nissan Altima, check your dashboard and specifically your airbag indicator light. If this one is on, there may be a link. Actually, it can have an impact on the rotating switch, a part that acts as a relay between the steering wheel and the horn. Having said that, for an airbag indicator problem on your Nissan Altima, it is recommended to go to a professional as it is more complicated to manage alone.


Here are the different causes that could have an impact on your Nissan Altima’s horn. Trumpets, fuses, rotating switch, airbag. Precisely determining the fault will help you to solve it. Be vigilant to replace the fuse with an identical fuse of the same intensity.

If you have any additional questions about the Nissan Altima, do not hesitate to consult our Nissan Altima category.