A horn that no longer works can potentially become dangerous and must be fixed as soon as possible. You should certainly always, on your Mercedes Benz GL Class, be able to report your presence thanks to this vital tool. It may simply be damaged and have a unusual sound on your Mercedes Benz GL Class, but in any case it is a problem that you must remedy. The aim of this article is to accompany you step by step in this action because you will realise that you can do it yourself without going to the garage for your Mercedes Benz GL Class.
First, start by examining where the failure came from. Based on this you will find out what repairs to do.
We will lead you step by step through the different tests:


Try honking the horn with the cover open. If you hear a sound, but much less strong than usual, it means that some tubes are damaged but some still work. indeed, on your Mercedes Benz GL Class there are several trumpets that carry sound.
Step two, try to locate the horn. You will find it close to 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 Mercedes Benz GL Class.

Horn cables unplugged on my Mercedes Benz GL Class

Once the horn is identified, we will attempt 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 must unscrew. Then tidy 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 Mercedes Benz GL Class! If nothing changes, let’s go a little further in the tests and explanations.
You are confronted with several solutions at this stage.

Faulty horn horn on my Mercedes Benz GL Class

You could buy another tube to change the damaged ones if you have been able to identify them on your Mercedes Benz GL Class thanks to the noise.

Fuse blown

it is advisable to also check the fuses. To find this fuse box, we invite you to look at our previous article on the subject:
“Where to find the fuse box on a Mercedes Benz GL Class”
You should also look in your vehicle owner’s manual for the fuse references of the horn fuse that you must identify precisely.
Once the fuse is identified, you can dispose of it using a pair of pliers. To verify if it is burned, look at the metal part. If this one is blown, your fuse has blown on your Mercedes Benz GL Class. It must therefore be replaced. If it looks new, it should not be questioned.
You can come across this fuse in any car shop or garage. Test the horn again after the fuse has been replaced. Is your horn working again? Congratulations! If this still doesn’t work for your Mercedes Benz GL Class, examine your dashboard and specifically your airbag indicator light. If this one is on, there may be a link. Actually, it can have an influence on the rotating switch, a part that acts as a relay between the steering wheel and the horn. Nevertheless, for an airbag indicator problem on your Mercedes Benz GL Class, it’s a good idea to go to a professional as it is more challenging to manage alone.


Here are the different causes that could have an impact on your Mercedes Benz GL Class’s horn. Trumpets, fuses, rotating switch, airbag. Precisely identifying 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 further questions about the Mercedes Benz GL Class, do not hesitate to consult our Mercedes Benz GL Class category.