[koukmobile]

Hello Community,

I have a serious problem with my 2019 GLC 2020 D 4matic.

I bought this car new from the dealer.

The car is already a years old and when I am driving longer than 20 minutes, some times the brake makes weird noise like hissing or like pumping air out of the brake pedal.

I am uploading a video on youtube for reference.

I have taken it to the dealer but the pedal did not do this noise at that time so they said they could not investigate it further. They did some tests they said and pumped air out fo the system (the booster I think) and told me to come back if the problem appears again.

Anybody has any similar issues? If so what did your dealer say and which part was the faulty one?

I have read online that the problem is the booster or the master brake cylinder but with no reference to this model or the action that has to be take.

I am looking for any information on this subject.

Thank you in advance to anyone who looked into this topic.

KR
koukmobile

 

[ianrandom]

Hey welcome. There's a forum section for your car. Found by scrolling down the main forum index.

 

[koukmobile]

Hey welcome. There's a forum section for your car. Found by scrolling down the main forum index.

Hi Moderator.

Thank you for the information.

I thought that since this is a brake issue I should post it in the Safety topic. I also think this might not affect only my model and could be an issue that other models have too.

KR