GLC63s, GLC63, GLC43 AMG SUV and Coupe (X253, C253) 2015 - Present

Anyone know what’s making this sound?

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Old Aug 25, 2019 | 02:53 PM
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DaLaaNi Bombina's Avatar
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2019 Mercedes-AMG GLC 43 Coupe
Exclamation Anyone know what’s making this sound?

Hello,

I took my vehicle into the dealer last Tuesday to have the oil topped off because it had been reduced to below the minimum line on the dipstick. Everything was fine until the following morning when it started to make a funny noise (akin to a playing card caught in a bicycle wheel’s spokes). The noise went away this weekend (I left the vehicle in Comfort mode) but when I placed it into Sport+ and put the hammer down then switched into Eco mode, the sound came back.

I’m not a car person and this is my first Mercedes so any help is appreciated. I will take it to the dealership tomorrow but I would like to know what’s causing the issue. The valet manager where I park on weekdays believes it to be a loose belt, and my saleswoman believes it to be something loose hitting a fan.

Thanks.
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Old Aug 25, 2019 | 02:54 PM
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2019 Mercedes-AMG GLC 43 Coupe
Ugh, having trouble uploading video.
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Old Aug 25, 2019 | 04:00 PM
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Old Aug 26, 2019 | 12:15 AM
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2020 GLE
Originally Posted by DaLaaNi Bombina
Could something be vibrating against something else? With the car running try pressing on all the parts and panels to see if it stops. Maybe you can isolate it to a certain panel.
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Old Aug 26, 2019 | 03:29 AM
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GLC 43
Check this thread - sounds like the same issue :https://mbworld.org/forums/glc43-glc...und-glc43.html
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Old Aug 26, 2019 | 01:55 PM
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Originally Posted by tinman831
Could something be vibrating against something else? With the car running try pressing on all the parts and panels to see if it stops. Maybe you can isolate it to a certain panel.
I took off the engine cover and found the paper stating to use Mobil 1 oil sitting underneath. I removed it, wiped everything down with a moist paper towel (I hate dust), then revved the engine to holy hell via all the nodes the truck has (Eco, Comfort, etc).

It’s not making the noise anymore so I’m assuming the paper was the culprit (since the noise sounded like a playing card caught in a fan). I’ve also noticed my coolant reservoir is loose and jiggly, so if the noise should ever come back, then I’ll have to assume it’s that instead.
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Old Aug 26, 2019 | 01:58 PM
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Originally Posted by viper43
Check this thread - sounds like the same issue :https://mbworld.org/forums/glc43-glc...und-glc43.html
Thanks, I’ll look into it.
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Old Aug 26, 2019 | 01:58 PM
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Old Aug 26, 2019 | 06:55 PM
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2018 GLC43
Originally Posted by DaLaaNi Bombina
Hello,

I took my vehicle into the dealer last Tuesday to have the oil topped off because it had been reduced to below the minimum line on the dipstick. Everything was fine until the following morning when it started to make a funny noise (akin to a playing card caught in a bicycle wheel’s spokes). The noise went away this weekend (I left the vehicle in Comfort mode) but when I placed it into Sport+ and put the hammer down then switched into Eco mode, the sound came back.

I’m not a car person and this is my first Mercedes so any help is appreciated. I will take it to the dealership tomorrow but I would like to know what’s causing the issue. The valet manager where I park on weekdays believes it to be a loose belt, and my saleswoman believes it to be something loose hitting a fan.

Thanks.
Sounds like a heat shield vibration
Personally I would check all the heat shields
Very annoying
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