Brand new car makes whining noise when stopping

818M3 · 09-13-2018, 01:18 PM

Just drove off the dealer lot on my way home and noticed a whining noise as i come to a stop. No noise when I accelerate. Only happens around 10 to 15 mph as I come to a complete stop with my foot on the brake. It sounds like a whining motor slowing down in speed. It's a DCT transmission. Thanks

Aaaaaaaaa · 09-13-2018, 01:23 PM

Whining sound at low speed https://f80.bimmerpost.com/forums/sh....php?t=1532549

818M3 · 09-13-2018, 01:26 PM

Mine sounds different and only happens at a very slow speed as I come to a stop.

xfactor · 09-13-2018, 02:25 PM

1. brakes?
2. LSD (diff)
3. Idler pully
4. wife/gf?

SpaceCowboy · 09-13-2018, 02:26 PM

The only whining I routinely get is from the passengers!.....well and sometimes from the driver too.

818M3 · 09-13-2018, 05:26 PM

It can possible be a serious issue? Differential or transmission? The car has 9 miles on it. Lol

heckyeahbro69 · 09-13-2018, 05:34 PM

Brand new brakes make a whining noise while coming to a stop due to the cross hatch pattern on the rotors. Once that wears off the noise will stop.

shay2nak · 09-14-2018, 03:01 PM

I had the noise also when new. Pretty cool sound actually. Doesn't do it any longer. Only happened as i came to a stop. IIRC, no sound if I the car slow down on its own.

It can't be the link posted.. That's something else. So must be the brake rotor thing.

zillymc · 10-03-2018, 12:00 AM

I noticed this on my brand new 2018 F80, it's at idle at a light, need to double check whether its only if its when I'm in gear or not (6MT). The other post linked here says he mentioned to dealer and they said it was idler pulley and it was replaced and now a non-issue.

Definitely going to point this out at my break-in service if mine is still doing this.

ntg44 · 10-03-2018, 07:51 AM

OP, I had the exact same sound with mine brand new. Strange whine/noise as you are approaching a stop. Don't know where I read about it, but I'm pretty sure it's the rear diff. At the 1200 mile service they replace the rear diff fluid, and that sound went away completely after the service for me, so I'm fairly confident that's what it was.

s4awd · 10-09-2018, 02:23 PM

Same. Did it when new when braking. After 200 miles, it slowly went away

SakhirM4 · 10-09-2018, 02:30 PM

Quote:

Originally Posted by Railgun

You guys do know that there's regenerative braking on this platform right? The sound you hear is exactly that. Over time it fades, at least, it did on mine.

The link schmee posted is not the issue in question.

Thanks for the education. I didn't know that

09-13-2018, 01:18 PM	#1
818M3 Captain 330 Rep 921 Posts Drives: Geo Metro Join Date: Feb 2009 Location: 626 iTrader: (4)	Brand new car makes whining noise when stopping Just drove off the dealer lot on my way home and noticed a whining noise as i come to a stop. No noise when I accelerate. Only happens around 10 to 15 mph as I come to a complete stop with my foot on the brake. It sounds like a whining motor slowing down in speed. It's a DCT transmission. Thanks
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09-13-2018, 01:23 PM	#2
Aaaaaaaaa Banned 7559 Rep 5,056 Posts Drives: The other M3 Join Date: Oct 2014 Location: So Cal iTrader: (0)	Whining sound at low speed https://f80.bimmerpost.com/forums/sh....php?t=1532549
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09-13-2018, 01:26 PM	#3
818M3 Captain 330 Rep 921 Posts Drives: Geo Metro Join Date: Feb 2009 Location: 626 iTrader: (4)	Mine sounds different and only happens at a very slow speed as I come to a stop.
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09-13-2018, 02:25 PM	#4
xfactor First Lieutenant 152 Rep 328 Posts Drives: 18 M4 6MT ZCP (AY) Join Date: Jul 2011 Location: Toronto iTrader: (0)	1. brakes? 2. LSD (diff) 3. Idler pully 4. wife/gf? __________________ Wife: X6M Mistress: S1000RR Last edited by xfactor; 09-13-2018 at 02:26 PM.. Reason: Not turbo
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09-13-2018, 02:26 PM	#5
SpaceCowboy Private 23 Rep 74 Posts Drives: 2016 F80 M3 in white with CS Join Date: Aug 2017 Location: Fort Collins, Co. iTrader: (0)	The only whining I routinely get is from the passengers!.....well and sometimes from the driver too.
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09-13-2018, 05:26 PM	#6
818M3 Captain 330 Rep 921 Posts Drives: Geo Metro Join Date: Feb 2009 Location: 626 iTrader: (4)	It can possible be a serious issue? Differential or transmission? The car has 9 miles on it. Lol
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09-13-2018, 05:34 PM	#7
heckyeahbro69 Captain 518 Rep 629 Posts Drives: m3 Join Date: May 2013 Location: united states iTrader: (0)	Brand new brakes make a whining noise while coming to a stop due to the cross hatch pattern on the rotors. Once that wears off the noise will stop. __________________
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09-14-2018, 03:01 PM	#8
shay2nak smoke if ya got 'em 1070 Rep 2,179 Posts Drives: F80 M3/Lotus Exige/500 Abarth Join Date: Feb 2011 Location: Calipornia iTrader: (0)	I had the noise also when new. Pretty cool sound actually. Doesn't do it any longer. Only happened as i came to a stop. IIRC, no sound if I the car slow down on its own. It can't be the link posted.. That's something else. So must be the brake rotor thing.
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10-03-2018, 12:00 AM	#9
zillymc Second Lieutenant 195 Rep 274 Posts Drives: 2018 BMW M3 \| Tanzanite Join Date: Oct 2015 Location: Bay Area, CA iTrader: (0)	I noticed this on my brand new 2018 F80, it's at idle at a light, need to double check whether its only if its when I'm in gear or not (6MT). The other post linked here says he mentioned to dealer and they said it was idler pulley and it was replaced and now a non-issue. Definitely going to point this out at my break-in service if mine is still doing this. __________________ Current: 2018 M3 ZCP Tanzanite / 6MT \| 2022 X3 M40i Brooklyn Gray Old: 2016 M4 / Yas Marina Blue / 6MT / Dinan Stage 1 / EDC / Black Kidney Grilles / MPerf CF Spoiler / Exec Pack
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10-03-2018, 07:51 AM	#10
ntg44 Colonel 2889 Rep 2,147 Posts Drives: R8 4.2 Spyder Join Date: Aug 2018 Location: Chicago iTrader: (3)	OP, I had the exact same sound with mine brand new. Strange whine/noise as you are approaching a stop. Don't know where I read about it, but I'm pretty sure it's the rear diff. At the 1200 mile service they replace the rear diff fluid, and that sound went away completely after the service for me, so I'm fairly confident that's what it was.
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10-09-2018, 02:23 PM	#11
s4awd Lieutenant 285 Rep 547 Posts Drives: 11 GT3RS, 08 E92 M3, 06 Evo IX Join Date: Oct 2008 Location: NYC iTrader: (0)	Same. Did it when new when braking. After 200 miles, it slowly went away
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