2015 M5 noise help!

ciprian75 · 09-16-2015, 11:29 AM

Hi guys,
I have a 2015 M5, manual transmission.
I wanted to see if any of you ran into the same issue I have; when I drive there is a noise, sounds like a cricket, coming from the engine every time the gas pedal is engaged. The noise can be reproduced even when stationary with the throttle on. It is very faint and it goes away a second or so later after I take my foot off the gas. The BMW shop told me they can't hear at first, than they said they can but can't figure out where the noise is coming from and pretty much told me they can't do anything about it. It's a very annoying noise and I tend to believe it's not normal so I was hoping to maybe hear if any of you experienced the same.
Maybe another way to describe the noise is a fan that's out of balance and it flutters or a busted bearing.
Thank you.

bimmertones · 09-17-2015, 06:55 AM

I think the sound is caused by a bad serpentine belt.

ciprian75 · 09-18-2015, 01:18 PM

Thanks @bimmertones. Can you elaborate? The serpentine belt noise occurs in older engine most of the time from what I read. Is it possible in engine under 10000 miles?

Day Laborer · 11-05-2015, 12:26 PM

Quote:

Originally Posted by bmwdrummer

Did you ever get this figured out? I'm having the same issue.

Same issue here, I believe it was the sound of the turbo at low spool. Occurs for me between 1000 rpm and 1500 rpm.
Sounds like crickets. Sound went away for me once I put downpipes, instead I hear it from the exhaust after the install

Loft23 · 11-05-2015, 01:44 PM

Something you may want to check, as it happened to me, is the rear-seat ventilation. I had the fan replaced. It sounded like a cricket and faint squealing. It almost seemed like it makes the noise as you are driving / accelerating, but it literally was just the fan motor squealing. Turn off your fan all the way to 0. First do the rear passenger and drive around. If it's still happening, turn off your fan completely for the front as well. See if that solves the issue. When I brought it to the dealership, I pointed the fan out, they verified, and ordered a new one. Not a biggie as you can drive around without using the rear vents.

tven99 · 11-05-2015, 10:34 PM

It happens to me when I am cruising in low speeds with a higher gear than the car should be in.

09-16-2015, 11:29 AM	#1
ciprian75 Private 27 Rep 71 Posts Drives: bmw Join Date: Nov 2013 Location: California iTrader: (0)	2015 M5 noise help! Hi guys, I have a 2015 M5, manual transmission. I wanted to see if any of you ran into the same issue I have; when I drive there is a noise, sounds like a cricket, coming from the engine every time the gas pedal is engaged. The noise can be reproduced even when stationary with the throttle on. It is very faint and it goes away a second or so later after I take my foot off the gas. The BMW shop told me they can't hear at first, than they said they can but can't figure out where the noise is coming from and pretty much told me they can't do anything about it. It's a very annoying noise and I tend to believe it's not normal so I was hoping to maybe hear if any of you experienced the same. Maybe another way to describe the noise is a fan that's out of balance and it flutters or a busted bearing. Thank you.
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09-17-2015, 06:55 AM	#2
bimmertones Private 5 Rep 59 Posts Drives: 2006 BMW M5 Join Date: Sep 2015 Location: Las Vegas, Nevada iTrader: (0)	I think the sound is caused by a bad serpentine belt.
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09-18-2015, 01:18 PM	#3
ciprian75 Private 27 Rep 71 Posts Drives: bmw Join Date: Nov 2013 Location: California iTrader: (0)	Thanks @bimmertones. Can you elaborate? The serpentine belt noise occurs in older engine most of the time from what I read. Is it possible in engine under 10000 miles? Last edited by ciprian75; 09-18-2015 at 02:02 PM..
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11-05-2015, 01:44 PM	#5
Loft23 First Lieutenant 63 Rep 301 Posts Drives: 2014 F10 M5 CP Join Date: Dec 2013 Location: San Francisco, CA iTrader: (0)	Something you may want to check, as it happened to me, is the rear-seat ventilation. I had the fan replaced. It sounded like a cricket and faint squealing. It almost seemed like it makes the noise as you are driving / accelerating, but it literally was just the fan motor squealing. Turn off your fan all the way to 0. First do the rear passenger and drive around. If it's still happening, turn off your fan completely for the front as well. See if that solves the issue. When I brought it to the dealership, I pointed the fan out, they verified, and ordered a new one. Not a biggie as you can drive around without using the rear vents. __________________ 2021 Model S Plaid - Deep Blue Metallic / White / Carbon 2018 Porsche 911 Carrera S (991.2) - Carrara white / Bordeaux black 2014 Comp Pack F10 M5 - Singapore Grey / Sakhir Orange. [SOLD]
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11-05-2015, 10:34 PM	#6
tven99 GOVNER 6 Rep 72 Posts Drives: 13' M5, 05 P71, 15 SP CHLGR Join Date: Jan 2013 Location: Greensboro, North Carolina iTrader: (0)	It happens to me when I am cruising in low speeds with a higher gear than the car should be in.
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