Brake pedal noise
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Junior Member
Joined: Jun 2021
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2018 Mercedes Benz GLS 450
Brake pedal noise
2018 GLS 450 96k
Performed a routine brake flush now the pedal makes a clunk noise after releasing it. slowly releasing the pedal the noise is not there. See video. Any thoughts?
Performed a routine brake flush now the pedal makes a clunk noise after releasing it. slowly releasing the pedal the noise is not there. See video. Any thoughts?
Last edited by mike10872; Apr 19, 2023 at 04:06 PM.
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Joined: Apr 2025
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GLS 2019
2019 GLS here. I have the same problem. The dealer did an extensive "repair" a year or so ago. Replaced brake cylinder, booster, flushed the line etc. The problem came back after 10k miles. Took it back. and now they are essentially repeating the same repair (replacing cylinder, booster etc.) and expecting different results. They are saying that may be the previous parts could be defective. Only time will tell. This is the 4th time I am at the dealer for this problem. The first time they swapped all the parts, the next time they "could not find an issue". The third time, flushed the lines. Fourth time, they are swapping parts all over again. Getting tired of MB at this point.
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Joined: Dec 2019
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2019 GLS here. I have the same problem. The dealer did an extensive "repair" a year or so ago. Replaced brake cylinder, booster, flushed the line etc. The problem came back after 10k miles. Took it back. and now they are essentially repeating the same repair (replacing cylinder, booster etc.) and expecting different results. They are saying that may be the previous parts could be defective. Only time will tell. This is the 4th time I am at the dealer for this problem. The first time they swapped all the parts, the next time they "could not find an issue". The third time, flushed the lines. Fourth time, they are swapping parts all over again. Getting tired of MB at this point.
