Due to the size and material used on the brakes of these vehicles, the brakes may start to squeak around the 50 percent wear point. The brake rotor surfaces become uneven, causing a lip to form at the outer edge of the rotor. Because of this, the rotors are usually replaced when the pads are worn (pad life varies depending on driving style and terrain).
Squeaking/Worn Brake Pads May Require Rotor Replacement Also on Mercedes-Benz C320
Average mileage: 125,000 (85,000–200,000)
8 people reported this problem
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Viewing 1 - 3 of 3 problem details
brakes year old and already squealing, mechanic tried to replace the brake indicator but didn't last long
2001 Mercedes-Benz C320 200,000 mi, Visitor
Whilst braking at low speeds, there is a lot of screeching from the front brakes. Has been going on since I purchased the car but since it was at low speeds I did not worry until now as they were getting worse, both noise and braking. On inspection the rotors looked glazed but the lip on the edge of the rotor was not of a sufficient height to cause concern. I initially removed the pads, as they had 3/4 remaining life, and roughened them up to see if I could reclaim their use. Unfortunately within about 20kms they were screeching their head off again due to the glazed rotors :( I purchased two new Zimmerman Rotors and a new set of Jurid pads. I also torqued the wheel nuts to 110nm to ensure that the rotors were not distorted under tension. To ensure that the pads and rotors bedded in correctly (gently accelerating and then braking slowly so as not to generate too much friction) I did 0-40kph then slowed down to about 8kph and repeated about five times. I then did 60 down to 20 a couple of times. Then did 80 to 60 a couple of times. I then got out onto the highway when there where not a lot of people around and did 100 to 60 a few more times and then drove normally. Absolutely quiet and smooth braking. A few days later some roos jumped out in front of the car and on applying the brakes they pulled the car up better than since I had bought the car and better than most other vehicles I have driven with ABS. Smooth, controlled braking with even braking distribution over both rotors. Very happy with the outcome :)
2004 Mercedes-Benz C320 90,000 mi, Visitor
squeking brake noise