cls55 engine whine

chris-durham

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Apr 2, 2015
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North East England
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2005 CLS55 AMG
hello,

The cls is developing quite a loud engine whine. Its not the normal one that last for 10 seconds when the car is cold then disappears. This is in addition to that one. I've tried to capture it in a video to demonstrate,its very loud to be fair.

I was planning on removing all the drive belts to narrow down the source of the noise

Why do I have a funny suspicion its engine oil pump or gearbox oil pump.

Untitled by chris pollin, on Flickr
 

merc85

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Harwich
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s211 e55k
Just a thought, It could be Supercharger whine? I did a oil change on my S/c you shoulda seen the state of the old oil
 

andy27168

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1997 C230K, 1999 C43/55 AMG
Hi,
I have the same on my CLS55, I thought it could of been my power steering pump, but reading on the American forums the consensus of opinion is that it is the gearbox fluid pump and it is pretty much normal.
Though I have my doubts but have never much worried about it after I read it is such a common complaint.
 

KillerHERTZ

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CLS63 AMG
Sounds exactly the same as mine...
 

E55BOF

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All I get from the Flickr links is pictures; no audio.
 

E55BOF

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Where should the sound play icon appear? I have no sound after a full minute.
 

Amo

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Jan 31, 2010
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London
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CLS 55 AMG
That is quiet loud but i dont think its anything to worry about.
 

John

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I wish.
Sounds normal to me i.e. the usual oil pump and V8 rumble.
 

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