Welp…..(UPDATED)

CLS1 · 10-01-2022, 08:07 PM

Me and the wifey decided to take a day trip to the central coast. Decided to take the M340i this time. Didn’t even make it 70 miles from the house (in hindsight glad we didn’t get to far for AAA tow).

I was cruising at about 75-80 and heard a “pop” from underneath the hood. Im assuming a belt of some kind judging from my research as it is a common problem with the mild hybrids.

16 month old lease, bone stock, 10k miles.

**UPDATE**

Got the car back today. So far it made it home from the Dealer 🤣. Time will tell if this will be an ongoing thing moving forward. As suspected, it’s the water pump pulley “issue.”

Chubbiejones · 10-01-2022, 08:33 PM

Quote:

Originally Posted by CLS1

Me and the wifey decided to take a day trip to the central coast. Decided to take the M340i this time. Didn't even make it 70 miles from the house (in hindsight glad we didn't get to far for AAA tow).

I was cruising at about 75-80 and heard a "pop" from underneath the hood. Im assuming a belt of some kind judging from my research as it is a common problem with the mild hybrids.

16 month old lease, bone stock, 10k miles.

Man that suxs! Hopefully you will be back on the road in no time

wdc330i · 10-01-2022, 08:34 PM

Do tell? I have not heard about the mild hybrids throwing belts…

CLS1 · 10-01-2022, 08:39 PM

Quote:

Originally Posted by wdc330i

Do tell? I have not heard about the mild hybrids throwing belts…

This is one of the threads that I found. A few more on Reddit( of course take anything you read on Reddit with a grain of salt lol)

https://g20.bimmerpost.com/forums/showthread.php?t=1828114

VINCER0 · 10-02-2022, 10:45 AM

Yeah I read about the belt contamination issues from multiple sources leaking coolant, oil, or silicone... it's unnerving.

Also there are threads about water pump failures.

Hope they fix all of the issues quickly and painlessly. 👍

10-01-2022, 08:07 PM	#1
CLS1 New Member 12 Rep 15 Posts Drives: F80 M3 BSM Join Date: Dec 2018 Location: California iTrader: (0)	Welp…..(UPDATED) Me and the wifey decided to take a day trip to the central coast. Decided to take the M340i this time. Didn’t even make it 70 miles from the house (in hindsight glad we didn’t get to far for AAA tow). I was cruising at about 75-80 and heard a “pop” from underneath the hood. Im assuming a belt of some kind judging from my research as it is a common problem with the mild hybrids. 16 month old lease, bone stock, 10k miles. UPDATE Got the car back today. So far it made it home from the Dealer 🤣. Time will tell if this will be an ongoing thing moving forward. As suspected, it’s the water pump pulley “issue.” Attached Images Last edited by CLS1; 10-06-2022 at 07:24 PM.. Reason: Uploaded diagnosis from BMW
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10-01-2022, 08:34 PM	#3
wdc330i Lieutenant 223 Rep 478 Posts Drives: '22 M440xi GC Join Date: Apr 2016 Location: Atlanta iTrader: (0)	Do tell? I have not heard about the mild hybrids throwing belts… __________________ '22 M440xi GC (BSM/Tacora) Previous: 2017 M240i Convertible; 2016 X5 50i; 2017 Boxster 718s; 2012 328iT Sport; 2009 X5 3.0; 2006 M3C; 2006 530xiT; 2003 325xiT; 2002 330i Sport; 2001 Z3 2.5; 2001 330i.
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10-02-2022, 10:45 AM	#5
VINCER0 Private First Class 110 Rep 129 Posts Drives: BMW M340i xDrive 2021 Join Date: Aug 2021 Location: New York, NY iTrader: (0)	Yeah I read about the belt contamination issues from multiple sources leaking coolant, oil, or silicone... it's unnerving. Also there are threads about water pump failures. Hope they fix all of the issues quickly and painlessly. 👍
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