E-Class (W211) E-class (W211) Brake Squeal Issue

[Monster]

I know this is a common problem among the pre-facelift W211 E-class, ree mentioned it about his car as well. Wimmer's car seems to fine. The brakes on our E started to squeal about 6 months ago, at 1st it was not that noticeable, but now the volume has increased and it is starting to get annoying and embarrassing. We took it to service recently, they checked everything, the pads doesn't need replacing, everything works well.

Now I want to know what can we do? car is an 05 E350, has about 23k km on it, while I am at it, does anyone know how to fix the noisy wipers as well?

I am sure there are solutions on mbworld, but I trust you guys more, especially Gullwing

 

[ree]

Wow, that sounds annoying! We haven't got any brake disc or pads problems the last 40.000 km! And it never really squeal or so…

…I hope that Gullwing has a solution for this problem!!

 

[martinbo]

The most likely cause is a bad set of brake pads or pads that actually do need replacing despite what the dealer says.

 

[Monster]

The most likely cause is a bad set of brake pads or pads that actually do need replacing despite what the dealer says.

The pad wear sensors haven't been triggered yet, the car has only done about 23 000km so the pads should be ok, but the noise do suggest otherwise, some say it has something to do with the SBC system.

 

[Monster]

Wow, that sounds annoying! We haven't got any brake disc or pads problems the last 40.000 km! And it never really squeal or so…

…I hope that Gullwing has a solution for this problem!!

Your wipers are fine as well?

 

[ree]

Your wipers are fine as well?

Everything is fine at the moment. Never had wiper problems…they work fantastic since 3 1/2 years – And the car has around 135.000 km on the clock!

 

[martinbo]

Many brake pads themselves have a section of material that is designed to create a squeal when approaching a certain level of pad material wear. Your pads may not be triggering a wear sensor yet but they could be faulty.

Here's a question, have you tried replacing the pads as a first port of call with your dealer - if the squeal persists then hey presto - it's not the pads.

Noisy wiper blades typically mean premature wear. I've noticed that in hot climes rubber wipers wear out quicker than in cooler environments. My Forester's blades last a summer - hardly get used in winter - and then, just after first rain are shot. So a year is all I can expect to get from them. And I garage the car and hardly ever leave it parked in direct sunlight. Also consider the possibility of the wipers picking up fallout (industrial or tree residue) from the windscreen and this can wear the edge of the wiper causing it to judder across the screen.

 

[Monster]

Many brake pads themselves have a section of material that is designed to create a squeal when approaching a certain level of pad material wear. Your pads may not be triggering a wear sensor yet but they could be faulty.

Here's a question, have you tried replacing the pads as a first port of call with your dealer - if the squeal persists then hey presto - it's not the pads.

Noisy wiper blades typically mean premature wear. I've noticed that in hot climes rubber wipers wear out quicker than in cooler environments. My Forester's blades last a summer - hardly get used in winter - and then, just after first rain are shot. So a year is all I can expect to get from them. And I garage the car and hardly ever leave it parked in direct sunlight. Also consider the possibility of the wipers picking up fallout (industrial or tree residue) from the windscreen and this can wear the edge of the wiper causing it to judder across the screen.

Thanks for the info. I haven't changed the pads yet, might have to do so soon.

The wipers on my Liberty are still fine after 3 years, and it has always been parked outside, the E has always been kept in the garage. It is probably due to the different rubber compound, I am not sure. The ones on the E are those flexible rubber blade with no metal frame support.

 

[Gullwing]

Ok ok I am here.

Monster, you are screwed! Time for a new car. 09 E350!!!

Wipers: you can try cleaning them, use an alcohol pad and run it up and down the blade. It might help.
Mercedes claims this new style wiper blade is much better then the old style. How the hell they can think that is beyond me, these new ones chatter all the time.
Try the alcohol pad, if that doesn't work, rainX the windshield, then you don't need wipers. (My wiper hads a 6 inch chunk missing and rainX works great, for the most part). If you live in a hot climate then wipers for the most part only last a year maybe two.

Brakes: SBC sucks for brake niose. Possible solutions; remove all the pads, clean off the brake dust and junk on them. Round off the edges of the pads a little and apply "stop squeal" to the pads and anti squeal paste to the backing.
Sometimes brake pads can crack, this causes squealing. Replace the pads.

Most MB dealers do not turn rotors, MB for the most part says not to. But it can be done and MAY help, problem is the rotors are built light so there really isn't that much that can be removed before they "need to be replaced" this is also why so many rotors only last one set of pads.

MB pads do not have anything on them that is suppose to make noise when they get low, that is what the sensor is for. Cheaper cars Ford, GM, BMW have noise makers on them so you know they are getting low.

 

[ALI]

Not a big issue, its happened to most of my cars when the brakes get dusty, i think if you dust them or clean them up, your problem will be solved ...

 

[VroomVroom]

We hjad a problem with our A6, the problem was a tiny stone had got stuck between the pad and disk, luckily we got the car checked out before real damage was done, e.g dish being starched.

So I suggest you get it looked at soon at, maybe get a lock garage (not Mercedes) to take the pad off and check (just so you are not paying Mercedes garage money for a little solution)