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post #1 of 34 (permalink) Old 09-09-2019, 08:40 AM Thread Starter
 
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A grinding happened when braking

Today I made a turn and came to stop sign in a short distance when it happened. When I hit the brakes my car, it didn't stop fully, moved a tiny bit forward and made this heavy grinding/noise. Scared me when it happened. I had experienced this noise couple times before when I hit the brakes in the snow. I know you feel it when the car shifts speeds so maybe related to this. Is this something I need to look into?

I have a 2015 pure
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post #2 of 34 (permalink) Old 09-09-2019, 08:45 AM
 
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Originally Posted by japy24 View Post
Today I made a turn and came to stop sign in a short distance when it happened. When I hit the brakes my car, it didn't stop fully, moved a tiny bit forward and made this heavy grinding/noise. Scared me when it happened. I had experienced this noise couple times before when I hit the brakes in the snow. I know you feel it when the car shifts speeds so maybe related to this. Is this something I need to look into?

I have a 2015 pure
Get your brakes checked asap!
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post #3 of 34 (permalink) Old 09-09-2019, 11:13 AM
 
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Yup! It sounds as if your pads have done about all that they're going to do for you...
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post #4 of 34 (permalink) Old 09-09-2019, 01:16 PM Thread Starter
 
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You guys know how an estimate of how much this would cost?


Thanks
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post #5 of 34 (permalink) Old 09-09-2019, 01:38 PM
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It also could be that the rotors are rusted from sitting after being out in the rain. It doesn't take long for rust to form. If that's the case, then a bit of driving and using the brakes will clean them right up. Happened to me a few weeks ago.

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post #6 of 34 (permalink) Old 09-09-2019, 02:06 PM
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It also could be that the rotors are rusted from sitting after being out in the rain. It doesn't take long for rust to form.
How many miles on your MY15 pure?

They can rust to the point that they lock up such that you would think the E-brake is stuck. Apply more pressure on the accelerator and the car will "launch" as it breaks the rust lock.

Ask me how I know - MY09 B'bus required that treatment Sunday in a rather precarious parking situation.
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post #7 of 34 (permalink) Old 09-09-2019, 02:47 PM
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If it was my car, I sure wouldn't just throw new pads and rotors at it unless you are at or near the minimum specs. I assume it's 2 mm for pads like all Mercedes are. Rotors I'd have to look up. Rusty rotors are going to happen in wet weather whether they are brand new or older. Just need the pads to "sand" the rust off.

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post #8 of 34 (permalink) Old 09-09-2019, 03:05 PM
 
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Originally Posted by japy24 View Post
You guys know how an estimate of how much this would cost?Thanks
I just had new rotors and pads put up front on mine
(MY2016 Prime)
The parts cost $234.00
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post #9 of 34 (permalink) Old 09-09-2019, 04:19 PM
 
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...Squeal noise after rain and sitting overnight comes from the drums not the disks....
....try it..if you see surface flash rust on your disks drive the car and the stop by using the hand brake only...the squeal noise is deafening...after a few pulls no more squeal...now hit the pedal and the pads will stop the car with no noise...
...now... the OP is talking about heavy grinding/noise and feeling it when shifting gears....if you can feel it and hear grinding it comes from the absence of pad material ...

Jetfuel...next..
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post #10 of 34 (permalink) Old 09-09-2019, 04:59 PM
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How many miles on your 2015?
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