03-12-2024, 02:19 PM | #67 | |
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Krisp97302.50 ObsessedM3C83.50 |
03-12-2024, 04:00 PM | #68 |
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Very interesting cause I just noticed that on mine but its not as loud as the otheres here.
It only squeaks every 10 or so starts in the morning when its below 35.
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Krisp97302.50 GabesSlowM4187.00 |
03-12-2024, 04:31 PM | #69 | |
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I’ve also noticed a correlation with humidity, sometimes it’ll be cold but doesn’t make the sound. Then if it has rained and it’s cold, it definitely does it. My dealer has a pulley on order at the moment but didn’t specify which one yet and they’ll be keeping it til next week when temps drop back down. Will report back soon! |
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03-12-2024, 09:12 PM | #70 |
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Is there a way to have this moved to the Mechanical Maintenance/TSB section? I made this a while ago when I was still fresh to the forum.
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03-14-2024, 10:17 AM | #71 | |
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03-14-2024, 10:33 AM | #72 | |
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03-14-2024, 11:31 AM | #73 | |
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https://g80.bimmerpost.com/forums/sh....php?t=2089581
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03-14-2024, 11:54 AM | #74 | |
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03-14-2024, 12:02 PM | #75 | |
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They did confirm they completed the replacement so I will post an update soon once I know what exactly they did and if that fixed it.
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GabesSlowM4187.00 ObsessedM3C83.50 |
03-14-2024, 02:13 PM | #76 | |
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03-14-2024, 03:24 PM | #77 |
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That is one hell of a technician RO write up. That guy deserves a raise for the dedication.
Heres to hoping its gone for good
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03-15-2024, 10:27 AM | #79 | |
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Removing the belt/pulleys is a process on these cars. They have to remove under paneling, bracing, charge pipe, different pieces from the top, and drain coolant just to get access. German Engineering
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03-15-2024, 12:24 PM | #80 |
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SA reached out to me initially saying they were unable to replicate the problem. I then told them to let the car warm up to operational temperature. They did and they were able to replicate the issue. Like others have said the pulley is on back order but should be in on Tuesday. They’re going to start with just the belt and repeat the procedure to see if the noise returns. If it does then they’ll order the idler as well as the other components to replace. They have to go in steps per BMW. However the SA did say they have been having some issues with some S58’s belts/idler pulleys.
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03-15-2024, 02:57 PM | #81 | |
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If my car sounds funny and its under warranty still, I am taking it in . No other vehicle makes this sound on cold start except these S58 motors. Moral of the story -- its NOT normal and many were quick to dismiss it.
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03-15-2024, 02:59 PM | #82 |
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They are testing mine one last time this coming Monday after it cold soaks all weekend. We both agreed it will be a good idea to test it in the 20-30 deg Fahrenheit temperatures Monday morning to verify it is truly good to go
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03-15-2024, 04:08 PM | #84 |
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Hey you too, sounds like your service department is onto it also! Its like chasing a ghost. lol
I just am excited to be able to drive it and not have it making an egregious sound when starting it up in the mornings.
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03-18-2024, 09:54 AM | #85 |
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Update: They ended up replacing the deflection pulley (aka idler pulley) and retested this morning and all was good after sitting all weekend. After what I have been reading, many dealers are replacing tensioner AND deflection pulley, most of the issues seem to stem from the deflection pulley alone.
Almost a year and a half of chasing the issue and it is hopefully fixed for good!
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03-18-2024, 10:34 AM | #86 |
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BMW really needs to put out a TSB for this. For those of you who ran into this issue and had your dealer spend a lot of time back and forth with BMW tech hotline or even by themselves trying to isolate the issue, have them escalate your case and work performed to the tech line for them to build a TSB case from it. If they get enough hits for the same thing, they will issue one and it’ll make future fixes on this for users go by a lot quicker since it’ll pop in their searches if they look it up.
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03-18-2024, 10:57 AM | #87 | |
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03-18-2024, 02:12 PM | #88 | |
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Now imagine having this sound constantly and be RPM based… had that happen in a WRX years ago and it was one of the guide/idler pulleys for the timing belt. That was fun getting the dealership to trust what I was saying and to just dig in there and find the goofy one. First time they’d seen that. Lol |
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