Rattling in front end

2013 MERCEDES BENZ GLK 350
115,000 MILES
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ABOEA
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  • 2 POSTS
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.
Jul 7, 2021 at 12:30 PM
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
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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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Jul 7, 2021 at 10:30 PM
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ABOEA
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Is this the pic of the front caliper?
Jul 9, 2021 at 5:12 PM
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 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
Jul 9, 2021 at 9:28 PM