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05-01-2012, 04:55 PM | #1 |
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High pitched humming sound at idle on my iS
Have a 2012 iS and I notice a distinct high pitched humming sound at idle, especially at night or when it is colder out. Anyone else get this sound? Is it exhaust related?
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05-01-2012, 05:07 PM | #2 |
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I hate to tell you this, but if your sound was like my sound, it was a prelude to turbo failure. Is it humming or whistling? I got whistling. Now don't mess your shorts, it might be different. I would get this sound upon acceleration too. It gradually got worse (higher and louder) until it ultimately went bad. It could also be an air leak in a hose in the engine. Bring it in and get it checked, my advice.
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05-01-2012, 06:12 PM | #3 | |
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Either way, new car, so should still be covered. |
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05-01-2012, 06:17 PM | #4 |
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High-pitched harmonic vibration? There's a kazoo stuck up your tailpipe.
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05-02-2012, 12:17 AM | #5 |
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Could be the in-tank fuel pump.
Some people have had it replaced, some have only had a software update. Neither of these options seems to work well. I had the sound also and after a software update it got a lot quieter, but I feel it's been getting worse again lately. After the software update I noticed that when I unlock the car or open the trunk there's a 3-second humming sound coming from the back. This happens only in the mornings or when I haven't driven the car for hours. |
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05-02-2012, 04:38 AM | #6 | |
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OP, if you read through that thread, my prb was solved when I switched gas brands; others had alternative solutions and still others did not find a remedy. Hopefully yours is easily solvable. |
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05-02-2012, 11:30 AM | #8 |
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05-02-2012, 11:33 AM | #9 | |
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2016 340i XDrive, EBII/black, 6 MT, M Sport, Track Handling, Cold Weather, Tech, Lighting, Driver Assistance Plus.
2012 Z4 35i, ED 2/24/2012, Melbourne Red Metallic, Black Leather, Carbon Trim, 6MT, M Sport, CW, PP, PS, NAV, CA. |
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05-02-2012, 11:54 AM | #10 | |
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This page might also be helpful. |
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05-02-2012, 05:35 PM | #11 |
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Before you do that, I would suggest that you read through that entire thread (if you haven't done so already). Unfortunately, some had their LPFP and/or fuel tank replaced and *still* the sound returned. Maybe it's a simple solution like mine or maybe not. Good luck.
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05-03-2012, 02:40 AM | #12 | |
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Dr Stig 2010 Z4 35is 2011 X3 30d M Sport Australia |
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05-03-2012, 12:01 PM | #14 |
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I am coming to the realization that this issue is intermittent. Sometimes there is no sound and other times there is. It seems to be more pronounced when it is cold. I can't recall whether or not it has anything to do with the amount of gas that's left in the tank. This morning, it was all quiet.
I am pretty sure it will be covered under warranty, so I am in no hurry to get it to the shop, especially since the noise seems to come and go. |
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05-04-2012, 01:03 PM | #15 |
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I get this too and the dealership tried to tell me there was another Z4 in the shop when I was there, and the other car sounded the same. Thus, they deemed it is normal.
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