S-Class (W140) 1991-1999: 300 SD, S 350TD, 300 SE 2.8, S280, 300 SE 3.2, 300 SEL 3.2, S320, S320L, 400 SE, S420, 400 SEL, S420L, 500 SE, S500, 500 SEL, S500L, 600 SE, S600, 600 SEL, S600L, 500 SEC, 600 SEC

Help - I need brake advice!!!

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Old 05-21-2007, 05:05 PM
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2015 CLS400
Question Help - I need brake advice!!!

I bot a 1999 S500 in Jan. The car is in excellent condition except one thing - The brakes squeak really really bad when I go into reverse. I'm really frustrated with this and its embarrassing when I'm parking. I took the car for inspection at a local independent MBZ mechanic and was told that the pads and rotors are in good shape and that the squeaking was normal because of the metal MBZ used for the rotors that year. Is this true? What should I do? Replace the rotors/pads? If so, any suggestions for a good replacement?
Old 05-21-2007, 05:53 PM
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1993 300SEL/S320
From memory there is some kind of coating that you should put on either the pads and the rotors when they are installed to stop this, perhaps consult another mechanic or a brake shop, sorry I can't be of more help.
Old 05-21-2007, 10:30 PM
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'08 ML320 CDI, '05 ML350(totaled by a soccer mom in a Tahoe), '98 C230 W202, '67 BMW 1800Ti
Brake Quiet, Synthetic Brake Grease, or Stop Squeal

If I understand what you were describing correctly. Any of these products can be found at your local parts store.
Read the instructions VERY CAREFULLY!
It should be applied to the rear of the pads that come in contact with the calipers/pistons NOT the rotors!
The squeal you hear is actually the pads vibrating against the pistons and calipers. These products act as a buffer to stop or muffle the vibration.


Old 05-22-2007, 06:36 AM
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99' SL500, 16' i3, 14' Passat TDI SEL
Originally Posted by dpc004
If I understand what you were describing correctly. Any of these products can be found at your local parts store.
Read the instructions VERY CAREFULLY!
It should be applied to the rear of the pads that come in contact with the calipers/pistons NOT the rotors!
The squeal you hear is actually the pads vibrating against the pistons and calipers. These products act as a buffer to stop or muffle the vibration.


+1
Old 05-22-2007, 11:15 AM
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Thanks for the suggestions

I'll stop by Kragens or Autozone today and try to find these products. I'll let you know if they work.
Old 05-30-2007, 06:35 PM
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If I understand what you were describing correctly. Any of these products can be found at your local parts store.
Read the instructions VERY CAREFULLY!
It should be applied to the rear of the pads that come in contact with the calipers/pistons NOT the rotors!
The squeal you hear is actually the pads vibrating against the pistons and calipers. These products act as a buffer to stop or muffle the vibration.
+2
Old 03-04-2018, 09:02 AM
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S420
Not to sound dumb but what are, "Any of these products can be found at your local parts store."? I don't know what to ask for.

I have a 1999 S420 and my brakes squeal badly at very slow speeds, like right before the car comes to a complete stop. I get the nastiest looks from other drivers but more importantly, it bothers me. My Mech has already checked it out and say my pads and rotors are in great shape, no need to replace or service either. Other than this and a vacuum assist trunk issue, the car is in very good shape but I can't even enjoy the Sunday drive to church because of this. What a shame.

Thanks in advance.
Old 03-04-2018, 01:47 PM
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s320
I use ceramics,I order on ebay.Stock pads create so much dust.
Old 03-05-2018, 12:25 PM
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I never use a brake paste,however anti rattle clips do wear out,from heat.

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