suby01

Thanks Egonvdv!

Does anyone know if there any TSB for the W213 that mentions the runout issue or brake judder at this time? I searched but could not find any other info. I really need to be prepared when going to the dealer as they will always try to not cover anything under warranty as was similar issue with map navigation updates.
They said it is not free, and I went back home. Only to discover on here that yes it is complimentary with new cars.

Egonvdv

the issue IS addressed by mercedes in a bulletin.

it's mentioned here : https://mbworld.org/forums/e-class-w...ins-213-a.html

or download from my OneDrive: https://1drv.ms/b/s!Ags7nPJiHj1Ig4VjdsOw-DjXLvrWHg

vic viper

Hubs has been replaced as a fix on some vehicles.

suby01

Took my car to the dealer, currently less than 10k miles and explained to the dealer that brakes judder under light braking. A few hours later I got a call that the car was all set and I got a complimentary set of AMG rotors and pads. Naturally I thanked the service rep for good service. And said out of curiosity what could have caused this? I then got a stern reply that made me chuckle quietly. "it is the way that the car is being driven, we saw that there was a lot of hard braking, your driving style caused the issue" I replied so it had nothing to do with the rotor run out? He was very surprised that I knew what that was, and hesitated and replied. No.
With that being said I am currently happy with my brand new front brake setup.

vic viper

It has nothing to do with your driving style and makes me curious how they were able to tell that you had been braking hard.

ua549

Isn't that kind of data stored in one of the controllers?

vic viper

Number of brakes yes, but brake power no.

ua549

I'm surprised because AFAIK there is an accelerometer chip in the car because of the AMG performance readouts. It would seem to be a simple process to record maximum g-force acceleration/deceleration numbers.

Mbracer26

the brakes and discs that they changed on mine started vibrating again on light breaking, but not as bad as before where the whole car juddered. After one or two weeks of the discs being changed

vic viper

It is always controversial to record and log data, this is usually kept at a minimum.

Cerave

[del]

Camaroguy72

I believe these are a thin sheet steel hub vs a traditional hub , making these rotors very sensitive as it is. If installed incorrectly or someone puts an impact on it when rotating your tires , may cause problems.

powerstop makes a brake kit for around $350 for front and rear rotors and pads which are conventional design for these cars.

Mike__S

Best source for information is Stoptech website. Steve Ruiz (retired now) wrote several articles still on their website that are worth a read.
Here is an overview of the design compromise ALL car brake systems have, and I include Carbon/Carbon as compromised because of their hideous cost.

The issue is OEM low noise, low dust pads. (Plus some environmental concerns for metallic (copper) impregnated or semi-metalic pads.)
These low noise, low dust OEM pads have a good initial bite and a very narrow heat band of efficient operation, but please the average customer with good initial bite, no dust and very little squeaking.
All brake pads work not on the rotor but on a very thin film of pad deposition, that is physics speaking,
So when a lot of heat goes into a relatively cold pad of this OEM type they become "gummy" and are VERY prone to a build up of pad deposition on one area of the rotor when you pull off the freeway or descend long hill and then stop at a light for 30 seconds or a minute, Once this uneven pad deposition occurs the pedal will pulse as the brakes heat up into their operating temperature.

Ceramic pads are better in that they have a higher temp range yet not too much dust, but when stone cold can require more pedal pressure and may squeak first thing when cold, but they seldom have deposition problems that causes pedal pulsation.
Semi-metalic (copper metal impregnated pads ) are very good at higher temps, but abrade the rotors (higher rotor wear) when below operating temperature, (some formulations (racing pads) will literally eat road car rotors and not stop properly when cold as in scary not stop properly) They usually squeak when stone cold first poke in the morning and/or dust up the wheels quickly.

OEM Mercedes always have clean wheels, but often have brake pedal pulsing if not actual shaking of the entire chassis if pad deposition is severe.

Solution is harder, ceramic pads and for some drivers even semi-metallic pad sets.
The service manager may or may not know these technical factors. (My dealership will often offer ceramic pads to owners when they know you know, don't ask how I found this out, ha-ha)

crazy00c230k

Scrolled too far down in a C63 thread and accidentally responded to the "related thread" apologies.

fergs1

I have a similar issue with a 2017 W213 AMG line, it has the bigger brakes. I have noticed with cruise control, if it is set at say 50MPH and you overide it with the accelarator and get up to 60 to overtake something, when you take your foot back off the accelerator the crusie control slams on the anchors - surely it should do this using engine braking / cruise down to setpoint? this lead footed braking during cruise control is probably a contributing factor.

Nowadays i find myself using the gearshift paddles to get the car to slow down with a combination of light braking to avoid the juddering. I have had many cars in my time but none that warped the disks at such low mileage (mid 40K miles)? these are fairly massive ventilated cross drilled disks for a saloon car, i would have thought they would dissipate heat very easily. it makes me think that what Mike S is saying makes more sense.

I asked the dealer here in N Ireland to measure the run out - I got a blank look as you dont get to speak to the mechanic directly so not sure it is warped at all.

JTK44

I always try to use the shift paddles when possible to slow my car down, for example exiting an off ramp from an interstate:

Keep in mind the transmission is warranted for 4 years, 50,000 miles: Brake pad replacement is at your cost!

janchee

I had this exact issue at 33k miles. MB wouldn’t do any goodwill and wouldn’t even warranty the discs and pads if I didn’t buy four new alloys at £3k+

(Late 2016, AMG Line S213 220d)

Agree with others that the HOLD function and Distronic features seem to be the culprit.

Service bulletin for W213 without AMG

LI42.10-P-066910 AUG17 – 213 without AMG juddering/shuddering of the brakes at the front axle can be felt when braking, check the wheel assembly components – disc brake & brake pad condition, wheel imbalance, suspension & steering parts, and wheel hub contact surface. If none of the components are visibly or measurably damaged replace brake pads.

With AMG:

Service Campaign 2019110002 DEC19 – 213 with B06 replace front left & right brake pads, disks, and calibers no further details given. Need to have dealer check VMI to see if VIN is included. (attached)