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Grinding noise in front (wheels or suspension)

michaelp1901michaelp1901 Member Posts: 2
edited June 2018 in Mercedes-Benz
Oddly, when the car is cold in the morning and I back out of the driveway, and put the car in drive, there is a higher pitched grinding sound that occurs as the wheels rotate forward as if grinding as the tire, or axle rotates. I have had the brakes looked at, and dirt blown out. Brakes are good, mechanic cannot find anything wrong. The sound goes away and then even after short stops on errands and restarting the sound does not come back. Appears to be only after long periods of non-use (for example over night) that this occurs. Even left with the mechanic and restarted after 1-2 hours of non-use, he cannot get the sound to reappear. ANY SUGGESTIONS for what this might be or look for or suggest to the mechanic would be appreciated.


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    kyfdxkyfdx Moderator Posts: 243,108
    I'd guess surface rust on the brake rotors.. usually accumulates overnight from humidity/dew. Once you brake a couple of times, all clean.

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    michaelp1901michaelp1901 Member Posts: 2
    I have an additional comment.... we live in AZ and the car is in the garage, dry and hot climate. (Now 100 degrees) Is it still possible to have this occur overnight in our climate
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    kyfdxkyfdx Moderator Posts: 243,108

    I have an additional comment.... we live in AZ and the car is in the garage, dry and hot climate. (Now 100 degrees) Is it still possible to have this occur overnight in our climate

    Sorry... no experience with your climate and rotor rust.

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