M-Class (W166) Produced 2012-2015

where is the horn located?

Old Nov 27, 2024 | 06:21 PM
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2015 ML400
where is the horn located?

I'm looking to do a horn up grade and need to know where the horn is physically located. I'm tired of other drivers changing lanes on top of me. I'm planning on adding a smaller (my marine standards) air horn to supplement the factory one. on my other vehicles I wire them up using the factory wiring and add a relay. I also loop the ground thru the firewall and add a switch for ground so I can flip a switch and kill the air horn and still have the factory one. comes in handy if you get pulled over and vehicle inspections.
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Old Dec 1, 2024 | 10:13 AM
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From: In the Shadow of the Tetons
2013 ML350 Bluetec
The snarky answer is as follows:
put your ear against the front grill and have someone press the horn button. There's a high tone and a low tone horn, and I bet you can see them from the front.

Last edited by rapidoxidation; Dec 1, 2024 at 10:15 AM.
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Old Dec 9, 2024 | 04:57 PM
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that is indeed a snarky useless answer. It is not visible thru the front grill or looking down with the hood open.
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Old Dec 9, 2024 | 05:12 PM
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They are behind the thing at the front....you can hear em when someone presses the steering wheel ;-)


Seriously, what are you putting in? I want to upgrade the horn on our Sprinter...its horn is a joke.

Last edited by OldManAndHisCar; Dec 9, 2024 at 05:16 PM.
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Old Dec 9, 2024 | 07:22 PM
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Originally Posted by OldManAndHisCar
They are behind the thing at the front....you can hear em when someone presses the steering wheel ;-)


Seriously, what are you putting in? I want to upgrade the horn on our Sprinter...its horn is a joke.
Two options:
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Old Dec 9, 2024 | 07:30 PM
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don't forget marine horns. I'm adding an 18" 150db horn as well as a 20" 155db horn, both driven with a small compressor and air tank.
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