Horn Too Quiet - 2019 GLA45

Ok well it sound like the high tone horn is located on the drivers side and isn’t the easiest to get to. Seems weird a horn would fail correct I guess the only other thing it could be is corroded or lose connections

Topendz said:

it could be is corroded or lose connections

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As @Wayne says "there are no perfect electrical connections; just some better than others." So yes, most likely the connection. All the best with your further troubleshooting/repair.

I have something like this. Mine, one of the horns does not sound right .. sometimes. My theory is that its installed upturned and it fills with water at carwash.

Anyone know if there is an easy way to get to the horns?

Topendz said:

Anyone know if there is an easy way to get to the horns?

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You can try to access them through the hole where the star is in the grille if you don’t have distronic (adaptive cruise control). Grasp the star firmly and rotate it counterclockwise. Same process to reinstall. You may be able to access the backside if you remove the air intake as well.
space will be limited and the job very cumbersome. I’d be concerned about injury since you can’t see where you’re reaching. Best to just take the bumper off carefully or get a trusted mechanic to take care of it. Hope you can get it fixed!

Thanks my Mercedes emblem isn’t one that turns to release unfortunately. I hope you don’t have to remove the whole front bumper to get to the horns lol

Topendz said:

Thanks my Mercedes emblem isn’t one that turns to release unfortunately. I hope you don’t have to remove the whole front bumper to get to the horns lol

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Unfortunately you will. You can remove the flat star too, but if you have distronic it won’t do you any good because you can’t reach back there with the radar in the way. Unplugging the radar could result in error messages or a need to recalibrate the system, costing more money and time than removing the bumper.

This is one of those instances where the “easy” way isn’t the fast, cheap or easy way at all.

Thanks everyone my awesome dealer had agreed to replace the horn under warranty

Sometimes the hardest part of a job is getting started. Don't sweat the small stuff, as a friend was once fond of telling me.