My 08 C300 only has 1600 miles, but right now i can sometimes hear a weird noise, pretty harsh, when i am using the brake. Especially when i am in low speed.

Do you guys know what is wrong with my car?? Thx..

 

Might help if you try to explain the noise a bit...

 

rock stuck between the rotar and pads?

dirt build up?

try to pressure wash at the coin op and see if u notice it adter

 

Twice ,I have had a small pebble ,1/8 inch in size, stuck between the disc guard & the disc. It was very noisy until removed.,I had to remove the wheel to do so.

 

It seems like there is a small rock between the brake disk and something else..

 

Did u get rid of it by yourself or you serviced your car??

 

I removed the wheel myself , saw the problem with the aid of a torch & simply flicked the little stone out from between the disc guard plate & the disc with a thin screwdriver. Good luck.

 

That's good that you fixed it...but there is a known issue regarding the parking brake clip. This morning on my way to work I heard this LOUD rubbing noise coming from the left rear wheel. It was 6:15AM and 13 degrees outside, so I didn't do much of an inspection...but there didn't appear to be anything wrong with the tire. I called my dealer and they said to bring it in this afternoon. The guy there is VERY thorough..and checked MB's database and found the following TSB information.

Hopefully it will be helpful to others:

DTB
Date:
November 18, 2008
Order No.:
P-B-42.20/101a
Supersedes:
P-B-42.20/101 dated Nov. 5, 2008
Group:
42
Revision History
Revision
Date
Purpose
a
11/18/08
Warranty Information Updated
-
11/5/08
Initial issue
SUBJECT:
Model 204.054/056/077/081
Squeaking/Grinding Noise from Rear Axle Area When Driving Without Brake Application
If you receive customer reports in the above model vehicles of a metal-to-metal squeaking/grinding noise from the area of rear axle when driving without brake application, perform the following.
Note: The cause may be the result of the stator clip that is fitted to stator support of the parking brake shoes. This clip prevents the brake shoes from contacting the aluminum wheel carrier. If the clip is installed incorrectly, it can move from the stator towards the brake disc and make contact. Witness marks can generally be seen on the stator clip when contact is present.
Replace the clip and slide it on only far enough so that the side tabs ( are flush with the stator towards the brake disc


Parts Information
Qty.
Part Name
Part Number
2
Plug stator support
A204 357 02 89
Note: The following allowable labor operations should be used when submitting a warranty claim for this repair. This information has been generated on November 18, 2008. Please refer to Netstar �� Star TekInfo �� Star Time for the most current labor time allowance.
In Case of Warranty
Operation: Wheels – two, R&R (40-1590)
Brake pads – rear, R&R/replace if required (wheels removed) (42-2851)
Brake discs – rear , $&R/replace if required (brake pads removed) (42-2881)
Parking brake shoes (with rear wheels removed), adjust (42-1302)
Damage Code
Operation Number
Time (hrs.)
Model Indicator (s)
35470 36
40 1590
0.3 hrs.
CA, CB, CC, CD
42 2851
0.5 hrs.
CA, CB, CC, CD
42 2881
0.7 hrs.
0.9 hrs.
CA, CB, CC
CD
42 1302
0.3 hrs.
CA, CB, CC, CD
P-B-42.20/101a (November 18, 2008)