02-14-2019, 09:34 PM | #23 |
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When I determined how to replicate the noise I just focused on mph and moving to 6th gear at 35-45 mph. I drove tonight to note the rpm and the sound occurred right at 1500rpm. As it turns out, I was able to repeat the sound in manual in all gears 2-8 at that 1500rpm. To be clear, the sound occur with normal rpm/mph mapping in auto mode but the car does not linger at 1500rpm for long. In fact, 1500rpm is just about the shift rpm point in comfort mode.
Could it be the serpentine belt on a misaligned pulley? Still stumped. D
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2018 X5 50i 2015 911 C2S 2017 X4 M40i (gone); 2010 X5 (last of the NAs); 2007 550i (still missed, except in the snow); 1991 525i manual (great 17-year run) Last edited by Duke I; 02-15-2019 at 06:57 AM.. |
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02-14-2019, 09:44 PM | #24 | |
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Also, does sound disappear right after 1500rpm or it continues to let's say up to 2000rpm? If you can find a empty clear road and reproduce sound and then put it in neutral and coast a bit - will sound go away (rule out engine) or stay (engine related)? Do you have a code reader? P.S. I know I said it before, but can you raise the car on hoist at any local shop and pull the plug from TC (5 min job)? It will light an error light on dashboard, but you'll rule out TC - and i think it sounds a lot like TC imho. |
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02-15-2019, 06:53 AM | #25 |
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Thanks DuSh
Sound starts at 1500 and disappears as rpm goes beyon that level. I can maintain the sound by having rpm linger at 1500 but only under load and not coasting. Sound seems to be from the lower front of the passenger footwell. I'll see if I can capture the sound in a recording. I do not have a code reader and I assume the dealership looked for codes when my car was in during the 3 week period. I'll try to do the TC test this weekend. I looked for the plug last night but quickly determined that I'll need to jack the car up to get to it. D
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2018 X5 50i 2015 911 C2S 2017 X4 M40i (gone); 2010 X5 (last of the NAs); 2007 550i (still missed, except in the snow); 1991 525i manual (great 17-year run) Last edited by Duke I; 02-15-2019 at 06:59 AM.. |
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02-15-2019, 10:44 AM | #26 | |
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02-15-2019, 09:55 PM | #27 | |
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It's visible when you look at it underneath but a bit hard to reach if car is not on hoist. It's a black plug - the only one on the TC. Here's my old post with a bit of photos to better show where that plug is: https://f15.bimmerpost.com/forums/sh...74&postcount=9 |
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02-15-2019, 11:05 PM | #28 | |
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2018 X5 50i 2015 911 C2S 2017 X4 M40i (gone); 2010 X5 (last of the NAs); 2007 550i (still missed, except in the snow); 1991 525i manual (great 17-year run) |
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03-16-2019, 06:34 AM | #30 |
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I think I have a similar noise too on my 50i. Although to me it just sounds like a harmonic in the cabin at high load low rpm. If it's the same noise I have, I'm not worried about it.
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03-16-2019, 04:00 PM | #31 |
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I have a 2015 X5 that makes a weird sound when accelerating on 1st or 2nd gear at low rpm (1800/2500). Is this normal? Doesn't seem like it should be but my BMW SA is saying this is normal. I took it in for a third time to try to resolve. They've replaced my belt tensioner and my turbo but no change. I have 500mi left on my 50k mi warranty and what to make sure it doesn't become and issue later...any thoughts...
Sound Clip: mic in the engine bay. https://drive.google.com/file/d/1EfM...w?usp=drivesdk Thanks Duran https://f15.bimmerpost.com/forums/sh....php?t=1594323 |
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03-17-2019, 01:25 AM | #32 | |
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03-17-2019, 11:36 AM | #33 | ||
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03-17-2019, 09:02 PM | #34 |
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Mine is not resolved yet. Still awaiting the tech guy to show up. My sound is more of a chirp than what x5m recorded and not the pronounced knocking in the gtz video. Seems to be getting worse. D
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2018 X5 50i 2015 911 C2S 2017 X4 M40i (gone); 2010 X5 (last of the NAs); 2007 550i (still missed, except in the snow); 1991 525i manual (great 17-year run) |
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10-13-2020, 06:57 PM | #35 |
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That LOUD AF banging when you crank your steering wheel all the way left or right??? I thought we were talking about a whining/whirring sound coming from the engine...this video is NOT that!
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10-13-2020, 07:00 PM | #36 | |
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03-30-2021, 05:14 AM | #37 |
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Hello guys, just faced the same issue on my 2014 X5 when going uphill (or under slight load). It only happens on operating temperature (never heard it on cold engine) and only within certain RPM range (approx 1700-2500 RPM). I can barely hear it with side windows closed, but once I open them - the rattling/knocking noise is definitely noticeable.
Has anybody managed to fix it? Last edited by Bomzara; 03-30-2021 at 06:14 AM.. |
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03-13-2024, 01:52 AM | #38 | |
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ZF has issues with electrovalves. Non mechanics call the electrovalves = solenoids. By factory these solenoids fail. Why ? Because ZF have factories around the asiatic area where their work efficiency is low. You need to contact ZF and get new solenoids. Don’t ask your self, if there was an issue with solenoids would have been shown to diagnostic tools. No chance to test solenoids without touching them. After this everything will be back to normal. No more hesitation on incline, 1-2-3 gear, when you come to full stop and no this rattling noise. Have a beautiful day |
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03-13-2024, 09:56 PM | #39 | |
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