Klank or Cracking Noise when pressing and releasing the Breaks - Kia Niro Forum
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post #1 of 21 (permalink) Old 02-03-2019, 02:10 PM Thread Starter
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Klank or Cracking Noise when pressing and releasing the Breaks

HI does anybody hear hearing and Klank or Cracking noise whenever you go on a full stop and go again. its like metal noise, like the break pads hitting the rotors. thank you
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post #2 of 21 (permalink) Old 02-04-2019, 04:45 AM
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depends what is the noise you hear... your description is not enough... maybe an audio recording would help


at very low speed a cracking noise when you brake can be normal (sound of pads on the disk) but without hearing your noise nobody will be of much help
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post #3 of 21 (permalink) Old 02-04-2019, 08:22 AM
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HI does anybody hear hearing and Klank or Cracking noise whenever you go on a full stop and go again. its like metal noise, like the break pads hitting the rotors. thank you
I have heard an occasional grumble from the brakes when either stopping or taking off. I assume it's just a vibration in the pads or calipers as the car comes to a stop or perhaps the pads don't retract quickly enough on startup and so there is some grinding. Doesn't happen all the time for me.

Jim
Southern Maryland
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post #4 of 21 (permalink) Old 02-04-2019, 11:17 AM
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It might be the relay closing and opening if the sound seems "internal" to the car.


Your brake pedal doesn't just push on the brakes, it also turns on/off the brake lights and turns on/off the regen feature of the hybrid system. Relays would control that.
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post #5 of 21 (permalink) Old 02-04-2019, 11:26 AM
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It might be the relay closing and opening if the sound seems "internal" to the car.


Your brake pedal doesn't just push on the brakes, it also turns on/off the brake lights and turns on/off the regen feature of the hybrid system. Relays would control that.
The sound I've noticed is definitely not a relay opening or closing, it's more of a groan. I'd say it lasts around a second or so when just starting to roll. In fact the more I think about it I think it's most common when starting off slowly. If I release the brake gradually, like in a parking lot where I need to creep forward or backward, it feels like the car starts to apply power before the brakes are released which causes the noise. It could also be something in the rear suspension that either loads or unloads as the car starts to move with the brakes still engaged.

It makes sense the car would start to apply power as the brakes are being release to prevent it rolling. I'm not particularly concerned about the noise, it's just something I've noticed sometimes.

Jim
Southern Maryland
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post #6 of 21 (permalink) Old 02-04-2019, 12:02 PM
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If I understand correctly your noise description i've had it on my renault scenic automatic for the 6 years I owned it, I have it on my subaru forester (CVT) from 2016 and I have this same noise on my 1 month old niro.
I trigger this easily as i have to go down my steep garage ramp at walking speed...so no regenerative braking: full pads against disk at very low speed : classical noise
not saying it is the noise you hear but the way you describe it , it is similar
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post #7 of 21 (permalink) Old 02-04-2019, 11:24 PM
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I've only heard a kind of whisper noise, nothing that could be described as a "klank or cracking noise". If you hear this sound when decelerating,I'd be inclined to get it checked out - it might indicate something loose or broken in the brake hardware, and that could become dangerous. If you hear this sound when accelerating from a stop, it might be related to the hill-stop-assist logic that is designed to hold the brakes momentarily when you are stopped on a steep hill. If you think that's what it is, you might ask yourself if you maybe have a habit of pushing significantly harder on the brake pedal than is necessary when you are fully stopped. Try using a light touch and see if you still hear that sound, or not.

2018 Niro PHEV Gravity Blue
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post #8 of 21 (permalink) Old 02-05-2019, 04:25 AM
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by the way if it is the same noise as me, you can reproduce it even in N in a steep ramp... no motor engaged no ICE no nothing just brakes... stop and release slowly the brakes and when the car goes push a little harder... do like if you wanted to go forward just one or 2 inches.
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post #9 of 21 (permalink) Old 02-05-2019, 06:28 AM
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the exact noise I alwais have had on my cars for the last 10 years
if you have the same I would no worry


on the niro:



Last edited by nounounounou; 02-05-2019 at 06:36 AM.
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post #10 of 21 (permalink) Old 02-05-2019, 09:00 AM
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Originally Posted by jmurphEV View Post
The sound I've noticed is definitely not a relay opening or closing, it's more of a groan. I'd say it lasts around a second or so when just starting to roll. In fact the more I think about it I think it's most common when starting off slowly. If I release the brake gradually, like in a parking lot where I need to creep forward or backward, it feels like the car starts to apply power before the brakes are released which causes the noise. It could also be something in the rear suspension that either loads or unloads as the car starts to move with the brakes still engaged.

It makes sense the car would start to apply power as the brakes are being release to prevent it rolling. I'm not particularly concerned about the noise, it's just something I've noticed sometimes.

OK, so the sound is external. Here's what I have noticed about my Niros brakes. When the Niro sits for a short time, like overnight or in the parking lot at work, and there is a lot of moisture in the air (rain or heavy humidity) I get a noise that sounds like a grinding for a second when I start moving. I always assumed that it was surface rust being cleaned off the rotors by the disc brake pads. It only happens in wet conditions, thats why I figured it was rust.


Does yours act like that or is it something different?
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