My 2013 GLK is making a very loud piercing sound

11-27-2017 | 02:10 PM

#1

tjanine21

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2013 GLK Mercedes

My 2013 GLK is making a very loud piercing sound

2013 GLK Mercedes after being driven for about 20 miles makes a loud piercing sound.

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11-27-2017 | 02:18 PM

#2

Racin_fool

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Joined: Feb 2007

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From: Dallas, TX

2008 E63 wagon (1 of 62)

did you recently do an oil change and perhaps add a bit too much oil?

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11-27-2017 | 05:11 PM

#3

Gt. Dane

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Joined: Aug 2012

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GLK250 BT

Quote:

Originally Posted by tjanine21

2013 GLK Mercedes after being driven for about 20 miles makes a loud piercing sound.

Does it change when brakes are applied? Might be worn pads, or a rock between pad and rotor.

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11-27-2017 | 06:02 PM

#4

tjanine21

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2013 GLK Mercedes

2013 GLK piercing sound

Quote:

Originally Posted by Gt. Dane

Does it change when brakes are applied? Might be worn pads, or a rock between pad and rotor.

Im due for an oil change. It’s only when accelerating not applying brakes.

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11-27-2017 | 06:03 PM

#5

tjanine21

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2013 GLK Mercedes

2013 GLK

Quote:

Originally Posted by Gt. Dane

Does it change when brakes are applied? Might be worn pads, or a rock between pad and rotor.

Does not happen when applying brakes. I hear the noise when accelerating.

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11-28-2017 | 07:38 PM

#6

Mmr1

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Joined: Sep 2015

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2013 glk 350

Maybe it’s the brake wear indicator .

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11-29-2017 | 10:24 AM

#7

bop11

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Joined: Aug 2011

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From: Philly area

350 GLK, C280

Only happens when accelerating? Probably the belt idler or belt itself.

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