Brakes making noises when backing out
Thread Starter
Junior Member
Joined: Sep 2010
Posts: 29
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From: Frisco, TX
c350
Brakes making noises when backing out
I have a very annoying issue. When I am in reverse and I apply the brakes, my calibers are making noises. This only happens in reverse. Brakes are quiet when coming to a stop going forward. Does anybody else have this problem? My SA said it is normal which is BS. I have owned plenty of cars and non of them have this problem. Oh, the noise is like a grinding noise.
MBWorld Fanatic!
Joined: Mar 2008
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From: 1 hours drive north of Sydney Australia
2007 W204 220CDI Classic Sedan
My brakes make a " grinding " noise at times when the car is almost stationary .I have put it down to having the brakes partially on & the pad is vibrating slightly against the disc . I can vary the noise by the amount of brake pressure. I do not see it as a problem in my case as other cars have done it but you should persue it with your dealer if you are concerned.
It could be that your discs are slightly glazed or the pads need a little installation lubricant .
It could be that your discs are slightly glazed or the pads need a little installation lubricant .
MBWorld Fanatic!
Joined: Sep 2009
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From: Dix Hills, New York
2012 C250 Coupe
Well, there are two grinding noises it could be. Is the grinding noise "felt" in the car, as slight vibrations/shaking. This can be due to some air being absorbed into the system, and getting varying pressure at calipers under very slow speeds. Its really not much of a big deal, but you should probably do a brake fluid flush.
The other way this sound can be made is if you haven't driven the car for a little while and the rotors have oxidized. You will be able to see they will be visually rusted. And then after your drive, they will be nice and shiny. This grinding noise when backing up is made because it is the first time the pad is coming into contact with the rust and clearing it off. The best way is to gain a little speed in reverse and go hard on the brakes.
The other way this sound can be made is if you haven't driven the car for a little while and the rotors have oxidized. You will be able to see they will be visually rusted. And then after your drive, they will be nice and shiny. This grinding noise when backing up is made because it is the first time the pad is coming into contact with the rust and clearing it off. The best way is to gain a little speed in reverse and go hard on the brakes.
Thread Starter
Junior Member
Joined: Sep 2010
Posts: 29
Likes: 0
From: Frisco, TX
c350
Well, there are two grinding noises it could be. Is the grinding noise "felt" in the car, as slight vibrations/shaking. This can be due to some air being absorbed into the system, and getting varying pressure at calipers under very slow speeds. Its really not much of a big deal, but you should probably do a brake fluid flush.
The other way this sound can be made is if you haven't driven the car for a little while and the rotors have oxidized. You will be able to see they will be visually rusted. And then after your drive, they will be nice and shiny. This grinding noise when backing up is made because it is the first time the pad is coming into contact with the rust and clearing it off. The best way is to gain a little speed in reverse and go hard on the brakes.
The other way this sound can be made is if you haven't driven the car for a little while and the rotors have oxidized. You will be able to see they will be visually rusted. And then after your drive, they will be nice and shiny. This grinding noise when backing up is made because it is the first time the pad is coming into contact with the rust and clearing it off. The best way is to gain a little speed in reverse and go hard on the brakes.
No, the noise can't be felt. I can vary how loud the noise is by how hard i push down on the brake so it has to do with the calibers if i would have to guess. Let me check the rotors for rust the next time i back out.
