Engine Noise? M40i

youngdoc1 · 02-23-2021, 07:34 AM

Hi all,
I’m noticing an odd sound coming from the engine near the drivers side. It started a couple of weeks ago. First time I accelerate after startup I can hear it from inside the cabin, a kind of rubbing sound from the left side that disappears after a few seconds.
No performance changes.
Thoughts?

I’m at about 42k km.

BMWZ4 · 02-23-2021, 08:49 AM

Yikes! I'm not a tech, but that doesn't sound right. Dealer! Asap!

Njerts · 02-23-2021, 10:52 AM

Yikes++
Could the black particles all over the engine bay be part of it?

ga9213 · 02-23-2021, 10:57 AM

Sounds like an accessory pully bearing or tensioner.

youngdoc1 · 02-23-2021, 10:59 AM

Quote:

Originally Posted by Njerts

Yikes++
Could the black particles all over the engine bay be part of it?

Thanks! Those are just melted snowflakes (thankfully)!

youngdoc1 · 02-23-2021, 11:04 AM

Thanks, all. I have an appointment booked for next week. Will keep you posted.

youngdoc1 · 03-03-2021, 04:08 PM

Just picked it back up from the dealership. Even sent them two videos. They agree they can hear it on the video, nothing abnormal when they listen in real life... no faults... they say there is nothing wrong.
Hmm...

BMWZ4 · 03-03-2021, 05:01 PM

I'd take it to another dealer for second opinion

Timber25 · 03-03-2021, 06:47 PM

🧐 I call BS... BMW is no different then any other big corporation not wanting to pony up on their mistakes. N20 timing chain guide failures - in settlement, s55 crank hub failures - likely future settlement, b58 oil consumption issues - probably future settlement. I’m approaching 15k miles on a 2020 x3 m40i and I’ve had to add 2.5L of extra oil... dealerships answer: no issues

Alias1431 · 03-03-2021, 07:03 PM

Quote:

Originally Posted by Timber25

b58 oil consumption issues - probably future settlement. I’m approaching 15k miles on a 2020 x3 m40i and I’ve had to add 2.5L of extra oil... dealerships answer: no issues

Wait what? This is the first I've heard of the B58 being anything but bulletproof. Are there other threads I can learn more about this in?

suby01 · 03-03-2021, 07:06 PM

Quote:

Originally Posted by Alias1431

Wait what? This is the first I've heard of the B58 being anything but bulletproof. Are there other threads I can learn more about this in?

...Its most likely the only single case... What settlement are we waiting on?

BMWZ4 · 03-03-2021, 07:56 PM

Yeah I've never heard of oil consumption issues for the b58...

jacko15 · 03-03-2021, 08:08 PM

That's approx. a liter every 6,000 miles. That could be a problem for many, but I average 5,000 miles a year, so oil change time.

Timber25 · 03-04-2021, 05:15 AM

Not isolated. Sure, my case may be unique. Time will tell on the b58 and am equally surprised given all the engineering changes they made for the B58B30O1 variant in the 2020+ x3 m40i. Will give an update after my 15k mi oil change (first one at 5k done after asking dealership to dbl check no major issues after needing 1L oil at 3600mi despite proper break in period)

https://forum.bmw5.co.uk/topic/14131...l-consumption/

https://g20.bimmerpost.com/forums/sh....php?t=1645079

https://x3.xbimmers.com/forums/showthread.php?t=1751919

https://www.bmwland.org.uk/index.php...ine-540i.3180/

ga9213 · 03-05-2021, 07:52 PM

My b58 has 37k miles on it and I'm at 7k miles in my current oil and not a drop of consumption. Still shows completely full.

yomaster · 03-05-2021, 10:40 PM

does the engine noise happen all the time? or only happens when cold start in colder weather? do you still hear this noise when engine is warmed up or when weather is warm?

youngdoc1 · 03-18-2021, 01:02 PM

Hi,

The engine grinding noise was there mostly at cold startup, and sometimes would be after warm up though was variable. From the driver's seat I could hear a rubbing sound only on cold starts when I first accelerated.

An update: 1 weeks ago had CEL come on - radiator flap malfunction. They replaced the radiator flap and the rubbing noise on first acceleration now gone. Have not noticed the engine noise come back.

02-23-2021, 07:34 AM	#1
youngdoc1 Private First Class 36 Rep 150 Posts Drives: 2019 X4 M40i Join Date: Jan 2012 Location: Toronto, Ontario iTrader: (0)	Engine Noise? M40i Hi all, I’m noticing an odd sound coming from the engine near the drivers side. It started a couple of weeks ago. First time I accelerate after startup I can hear it from inside the cabin, a kind of rubbing sound from the left side that disappears after a few seconds. No performance changes. Thoughts? I’m at about 42k km.
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02-23-2021, 08:49 AM	#2
BMWZ4 Major General 1924 Rep 5,115 Posts Drives: '23 X1/'23 Allroad Progressiv Join Date: Apr 2010 Location: Toronto iTrader: (1)	Yikes! I'm not a tech, but that doesn't sound right. Dealer! Asap! __________________ '11 Z4 30i (retired);'11 X3 28i (retired); '15 M235i Stage 1 Dinan (recalled & crushed); '16 M235i Stage 3 Dinan (retired); '15 X3 28i (retired); '14 328i (retired), 2019 X3M40i (retired); Loaded '18 X1 (retired); Loaded '20 X3MC DG, Black/Tan Merino (retired); Loaded '23 X1 Cape York green and Red/Black interior; '23 Audi A4 Allroad Progressiv
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02-23-2021, 10:52 AM	#3
Njerts Lieutenant 128 Rep 545 Posts Drives: x3 m40i Join Date: Feb 2014 Location: Vancouver,BC iTrader: (0) Garage List 2018 BMW X3 M40i [0.00]	Yikes++ Could the black particles all over the engine bay be part of it?
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02-23-2021, 10:57 AM	#4
ga9213 Lieutenant 367 Rep 533 Posts Drives: 2018 X3 M40i Join Date: Jun 2020 Location: Olathe, KS iTrader: (0)	Sounds like an accessory pully bearing or tensioner.
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02-23-2021, 11:04 AM	#6
youngdoc1 Private First Class 36 Rep 150 Posts Drives: 2019 X4 M40i Join Date: Jan 2012 Location: Toronto, Ontario iTrader: (0)	Thanks, all. I have an appointment booked for next week. Will keep you posted.
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03-03-2021, 04:08 PM	#7
youngdoc1 Private First Class 36 Rep 150 Posts Drives: 2019 X4 M40i Join Date: Jan 2012 Location: Toronto, Ontario iTrader: (0)	Just picked it back up from the dealership. Even sent them two videos. They agree they can hear it on the video, nothing abnormal when they listen in real life... no faults... they say there is nothing wrong. Hmm...
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03-03-2021, 05:01 PM	#8
BMWZ4 Major General 1924 Rep 5,115 Posts Drives: '23 X1/'23 Allroad Progressiv Join Date: Apr 2010 Location: Toronto iTrader: (1)	I'd take it to another dealer for second opinion __________________ '11 Z4 30i (retired);'11 X3 28i (retired); '15 M235i Stage 1 Dinan (recalled & crushed); '16 M235i Stage 3 Dinan (retired); '15 X3 28i (retired); '14 328i (retired), 2019 X3M40i (retired); Loaded '18 X1 (retired); Loaded '20 X3MC DG, Black/Tan Merino (retired); Loaded '23 X1 Cape York green and Red/Black interior; '23 Audi A4 Allroad Progressiv
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03-03-2021, 06:47 PM	#9
Timber25 New Member 34 Rep 24 Posts Drives: 2020 BMW X3 M40i Join Date: Dec 2019 Location: Pennsylvania iTrader: (0)	🧐 I call BS... BMW is no different then any other big corporation not wanting to pony up on their mistakes. N20 timing chain guide failures - in settlement, s55 crank hub failures - likely future settlement, b58 oil consumption issues - probably future settlement. I’m approaching 15k miles on a 2020 x3 m40i and I’ve had to add 2.5L of extra oil... dealerships answer: no issues
	Appreciate 0 Quote

03-03-2021, 07:56 PM	#12
BMWZ4 Major General 1924 Rep 5,115 Posts Drives: '23 X1/'23 Allroad Progressiv Join Date: Apr 2010 Location: Toronto iTrader: (1)	Yeah I've never heard of oil consumption issues for the b58... __________________ '11 Z4 30i (retired);'11 X3 28i (retired); '15 M235i Stage 1 Dinan (recalled & crushed); '16 M235i Stage 3 Dinan (retired); '15 X3 28i (retired); '14 328i (retired), 2019 X3M40i (retired); Loaded '18 X1 (retired); Loaded '20 X3MC DG, Black/Tan Merino (retired); Loaded '23 X1 Cape York green and Red/Black interior; '23 Audi A4 Allroad Progressiv
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03-03-2021, 08:08 PM	#13
jacko15 WannaBimmer 211 Rep 421 Posts Drives: Jeep Grand Cherokee Overland Join Date: Feb 2021 Location: Pennsylvania's North Shore iTrader: (0)	That's approx. a liter every 6,000 miles. That could be a problem for many, but I average 5,000 miles a year, so oil change time.
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03-04-2021, 05:15 AM	#14
Timber25 New Member 34 Rep 24 Posts Drives: 2020 BMW X3 M40i Join Date: Dec 2019 Location: Pennsylvania iTrader: (0)	Not isolated. Sure, my case may be unique. Time will tell on the b58 and am equally surprised given all the engineering changes they made for the B58B30O1 variant in the 2020+ x3 m40i. Will give an update after my 15k mi oil change (first one at 5k done after asking dealership to dbl check no major issues after needing 1L oil at 3600mi despite proper break in period) https://forum.bmw5.co.uk/topic/14131...l-consumption/ https://g20.bimmerpost.com/forums/sh....php?t=1645079 https://x3.xbimmers.com/forums/showthread.php?t=1751919 https://www.bmwland.org.uk/index.php...ine-540i.3180/
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03-05-2021, 07:52 PM	#15
ga9213 Lieutenant 367 Rep 533 Posts Drives: 2018 X3 M40i Join Date: Jun 2020 Location: Olathe, KS iTrader: (0)	My b58 has 37k miles on it and I'm at 7k miles in my current oil and not a drop of consumption. Still shows completely full.
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03-05-2021, 10:40 PM	#16
yomaster YO 73 Rep 102 Posts Drives: 2020 BMW X3 M40i Join Date: Aug 2020 Location: NY iTrader: (0)	does the engine noise happen all the time? or only happens when cold start in colder weather? do you still hear this noise when engine is warmed up or when weather is warm?
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03-18-2021, 01:02 PM	#17
youngdoc1 Private First Class 36 Rep 150 Posts Drives: 2019 X4 M40i Join Date: Jan 2012 Location: Toronto, Ontario iTrader: (0)	Hi, The engine grinding noise was there mostly at cold startup, and sometimes would be after warm up though was variable. From the driver's seat I could hear a rubbing sound only on cold starts when I first accelerated. An update: 1 weeks ago had CEL come on - radiator flap malfunction. They replaced the radiator flap and the rubbing noise on first acceleration now gone. Have not noticed the engine noise come back.
	Appreciate 0 Quote