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C450 at idle - engine whine

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Jul 28, 2019 | 12:40 PM

#1

SouthFL450

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From: South Florida

C450

C450 at idle - engine whine

I’ve noticed an engine whine/humming at idle. Seems like it just started to happen the last month or so. It’s been very hot down here in south Florida so I’m not sure if it’s weather related. Anyone have any idea what this may be? Is it normal? Seems like my car didn’t do this when I purchased it 4-5 months ago.

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Old

Jul 29, 2019 | 12:03 AM

#2

zibby43

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Joined: Feb 2008

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'20 GLC300 SUV

Quote:

Originally Posted by SouthFL450

I’ve noticed an engine whine/humming at idle. Seems like it just started to happen the last month or so. It’s been very hot down here in south Florida so I’m not sure if it’s weather related. Anyone have any idea what this may be? Is it normal? Seems like my car didn’t do this when I purchased it 4-5 months ago.

My C43 was making this very noise tonight. Was a pretty hot and humid evening.

Normal.

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Old

Aug 18, 2019 | 09:50 PM

#3

tmoneyC450amg

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Joined: Jul 2015

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From: Philly and NYC

2019 E63S & 2022 X7 M50

I was just wondering the same, whether the engine whines, runs a bit too loud at idle and I have also came to a conclusion that it's normal

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