GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

2007 GL Braking Problem

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Old 09-19-2013, 09:58 AM
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2007 GL450
2007 GL Braking Problem

Changed my brakes a while back and about a month later I started to notice a clicking noise whenever I started to brake. There is a single click noise when I brake. It is definitely from outside of the car and is pretty loud. I have checked over my brakes and everything is solid. Wondering if anyone else has run into this before, thinking I may have a bad bushing somewhere and getting some metal on metal or something. Happens at any speed and doesn't seem to change regardless of how hard I stop. More of an annoyance than anything, but help would be appreciated.
Old 09-19-2013, 11:38 AM
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2007 W211 E350 4Matic / 2008 X164 GL320 CDI
What brand brakes?

Did you use new pins, bushings clips?
Old 09-19-2013, 12:13 PM
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Check to see if a stone has lodged in the caliper. I've seen it happen. Otherwise clicking is usually a scored rotor.
Old 09-19-2013, 12:21 PM
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Brake pads are Wagner ThermoQuiet. I don't think it is a scored rotor as it is a single click, no more, no less. And like I said, only happened about a month after the brake change so I am not sure if that has anything to do with it or if it is just coincidence.
Old 09-19-2013, 01:42 PM
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Did they come with new rubber bushings and clip?

Did you change the pins?

Did you lube the pins and where the pads contact the caliper bracket?
Old 09-19-2013, 02:03 PM
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No to the new rubber bushings and clip. I don't know what pins you are referring to, it has been a while. I always lube pads and ensure good contact, went back to look and that is not an issue.
Old 09-19-2013, 05:04 PM
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2007 W211 E350 4Matic / 2008 X164 GL320 CDI
Wondering if the bushings or clip arte a little worn?

My Centric pads came with new parts. (Bushings and Clips)

The pins are the two bolts that you have to remove to get the caliper off.

They are available replacement parts. I cleaned mine and reused them.
Old 09-20-2013, 07:49 AM
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When I get a chance in the next couple weeks I will look for wear on these parts to see if that is it. It is actually quite loud and I am thinking it is maybe a worn out bushing somewhere else in the suspension that is hitting metal on metal when I stop. Forgot to mention that it seems to only happen when stopping going forward.

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