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Rattling in front end

Tiny
ABOEA
  • MEMBER
  • 2013 MERCEDES BENZ GLK
  • 115,000 MILES
When driving on a bumpy road I hear this distinct rattling noise but if I gently apply the brake pedal while still moving the noise stops. If I release the pedal it continues. Shops have done a visual inspection and saw nothing loose. Please advise of what this possibly could be.
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Wednesday, July 7th, 2021 AT 12:30 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

If you apply the brakes and the noise stops, it sounds brake-related. If you look at the pic below, I circled a caliper pad spring. Make sure they are all present, fully attached, and not broken.

Let me know what you find.

Joe
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Wednesday, July 7th, 2021 AT 10:30 PM
Tiny
ABOEA
  • MEMBER
  • 2 POSTS
Is this the pic of the front caliper?
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Friday, July 9th, 2021 AT 5:12 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

That pic is a Mercedes front caliper, but I'm not sure what model you have. I know it's a GLK, but is it a 250 Bluetec, a 350, or a 350 4matic?

Let me know.

Joe
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Friday, July 9th, 2021 AT 9:28 PM

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