High-pitched whine

mc68386 · 03-05-2007, 11:56 PM

My girlfriend just got an 07 328xi with comfort access (loves it.) However, after she parks it, I can hear a super high-pitched electronic whine coming from somewhere on/in the car. I hear it more outside the car than if I get in. Once the car is started, I can't hear it anymore. After about a minute, the noise stops. Opening a door restarts it.

My 06 330 (no comfort access) doesn't do this at all. Anyone else notice this?

BTW she can't hear the sound - her ears aren't as good. I fear that if she took it to the dealer, they'd never hear it either.

r3za · 03-06-2007, 12:41 AM

my e90 335i w/ comfort access has the same noise..? idunno.

jbake · 03-06-2007, 12:44 AM

I hear that noise too, I think it has to do with the power going to everything. It shuts off when everything in the car is without power. Like when I sit in the car with the door open in my garage (engine off) and turn the radio on, the noise comes on. When I shut it off, it goes away after a bit.

ps i dont have CA

esquire · 03-06-2007, 02:33 AM

i also get that noise. for me it happens not only on shutdown, but also when i open the car, for example, to grab something out of it. i think it stems from the car drawing power when the engine is off. but it seems the sound is common to all e9x's.

BK · 03-06-2007, 08:57 AM

With CA, when you open the door and bring the key inside, it assumes you're going to start the car, so it goes through a kind of startup routine. Nav CD starts spinning up, steering wheel unlocks, various other electrical things start whirring or whining. If you don't start the car, but leave the key in it with the doors closed, everything shuts back down after a while. Opening a door will start things up again.

I know this because I always wash the car with the key inside.

mc68386 · 03-06-2007, 09:57 AM

Thanks for the replies. It sounds like it's normal. Maybe it's something they added during the 9/05 refresh or for 07, so my pre-09/05 330 doesn't do it.

It made me nervous because I work with electronics and they often make a noise just like this when they're beginning to fail.

TTG · 03-06-2007, 12:14 PM

Yup totally normal but the Nav CD spinning started to get on my nerves BIG time! I wish the Nav CD was located in the trunk like some other cars!!!!

DocYahoo · 03-06-2007, 01:49 PM

Quote:

Originally Posted by TTG

Yup totally normal but the Nav CD spinning started to get on my nerves BIG time! I wish the Nav CD was located in the trunk like some other cars!!!!

I couldn't have agreed more! Copy Honda: Have a in-dash 6 disc CD Changer and the Nav DVD in the trunk! Com'on, how often (if ever) will someone change their Nav DVD?

MrWorf · 03-06-2007, 02:02 PM

I guess they think we'll be using the DVD for our massive mp3 collections and thus must have easy access

dmichael · 09-14-2007, 12:20 PM

I am hearing this high pitched whine coming from the loaner 07 328xiT I've been driving all week. Its really loud as soon as I open up the tailgate, with no key in the dash. Also, sometimes the whine comes through AM radio stations while driving. The car does not have CA or NAV. Oct 06 build date. Drives me insane.

This is not normal, sounds to me like a bad ground somewere in the electrical system. My car is a Jul 07 build and it never did this.

gloster · 09-14-2007, 01:53 PM

Quote:

Originally Posted by mc68386

My girlfriend just got an 07 328xi with comfort access (loves it.) However, after she parks it, I can hear a super high-pitched electronic whine coming from somewhere on/in the car.

I knew there was an advantage to getting older! I can't hear the noise with my car.

ibimmer954 · 09-14-2007, 03:43 PM

I have CA in a 335i E93. After the car is off, if I go back and open the trunk, there is definitely a whirring sound in the trunk after the trunk is opened. It sounds like it's coming from the drivers-side taillight. Almost like it has something to do with the electronic latch on the trunk or something. It stops after a few seconds.

e92phreak · 09-14-2007, 03:47 PM

i always thought the high pitched twine was the power to the oil cooler.

fragadellic · 09-14-2007, 07:07 PM

It's normal, at least for CA cars. They all do it. There are a lot of things that power up when you open the door, shut off the car, etc. Coolant pumps through the turbos depending on their temp after shutdown, comfort access powers up some of the convenience features...

Don't worry about it.

Now if your car takes longer than a second to start, i.e., long crank, then start to worry...

Hobbination · 07-03-2008, 08:56 AM

I get the same thing on my Feb 2008 build 335i w CA...also comign from the drivers side truck area....Sounds cool though but I bet its a serious drain on the ol battery....whatever, its doing somthing and whatever its is, i like it.

03-05-2007, 11:56 PM	#1
mc68386 Private First Class 8 Rep 121 Posts Drives: '06 330i 6MT Join Date: Mar 2005 Location: Tucson, AZ iTrader: (0)	High-pitched whine - comfort access? My girlfriend just got an 07 328xi with comfort access (loves it.) However, after she parks it, I can hear a super high-pitched electronic whine coming from somewhere on/in the car. I hear it more outside the car than if I get in. Once the car is started, I can't hear it anymore. After about a minute, the noise stops. Opening a door restarts it. My 06 330 (no comfort access) doesn't do this at all. Anyone else notice this? BTW she can't hear the sound - her ears aren't as good. I fear that if she took it to the dealer, they'd never hear it either. __________________ 2006 330i \| Black Sapphire Metallic \| Black Dakota Leather \| 6SP MT \| ZPP \| ZSP \| ZCW \| Sirius
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03-06-2007, 12:41 AM	#2
r3za Private 3 Rep 70 Posts Drives: 2007 E90 335i Join Date: Oct 2006 Location: so cal 818 iTrader: (0)	my e90 335i w/ comfort access has the same noise..? idunno.
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03-06-2007, 12:44 AM	#3
jbake OG 77 Rep 930 Posts Drives: F80 M3 Join Date: Feb 2007 Location: Cen Cal iTrader: (0)	I hear that noise too, I think it has to do with the power going to everything. It shuts off when everything in the car is without power. Like when I sit in the car with the door open in my garage (engine off) and turn the radio on, the noise comes on. When I shut it off, it goes away after a bit. ps i dont have CA
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03-06-2007, 02:33 AM	#4
esquire Brigadier General 478 Rep 3,044 Posts Drives: 2011 Dakar Yellow M3, 2018 M5 Join Date: Feb 2007 Location: Orange County, California iTrader: (0)	i also get that noise. for me it happens not only on shutdown, but also when i open the car, for example, to grab something out of it. i think it stems from the car drawing power when the engine is off. but it seems the sound is common to all e9x's. __________________ [ESS VT2-625] [Akrapovic Evolution Exhaust] [KW Clubsports] [OSS Angel Eyes] [Revinora r-CRT Lip] [Vorsteiner Boot] [Challenge Race Diffuser] [See the Build Thread HERE]
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03-06-2007, 08:57 AM	#5
BK Smiling politely 165 Rep 7,931 Posts Drives: 330i Join Date: Feb 2006 Location: Washington DC iTrader: (0) Garage List 2006 330i [9.00]	With CA, when you open the door and bring the key inside, it assumes you're going to start the car, so it goes through a kind of startup routine. Nav CD starts spinning up, steering wheel unlocks, various other electrical things start whirring or whining. If you don't start the car, but leave the key in it with the doors closed, everything shuts back down after a while. Opening a door will start things up again. I know this because I always wash the car with the key inside. __________________ E90 330i Black Sapphire 6MT \| 991.1 C4 Platinum Silver 7MT
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03-06-2007, 09:57 AM	#6
mc68386 Private First Class 8 Rep 121 Posts Drives: '06 330i 6MT Join Date: Mar 2005 Location: Tucson, AZ iTrader: (0)	Normal, eh Thanks for the replies. It sounds like it's normal. Maybe it's something they added during the 9/05 refresh or for 07, so my pre-09/05 330 doesn't do it. It made me nervous because I work with electronics and they often make a noise just like this when they're beginning to fail. __________________ 2006 330i \| Black Sapphire Metallic \| Black Dakota Leather \| 6SP MT \| ZPP \| ZSP \| ZCW \| Sirius
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03-06-2007, 12:14 PM	#7
TTG ... 935 Rep 4,326 Posts Drives: M340 Join Date: Aug 2006 Location: Seattle, WA iTrader: (3) Garage List 2011 BMW M3 [7.84] 2007 335 Coupe (ret ... [9.00]	Yup totally normal but the Nav CD spinning started to get on my nerves BIG time! I wish the Nav CD was located in the trunk like some other cars!!!! __________________ 2020 G20 M340 xDrive - Portimao Blue - ZDA\|ZPP\|ZPX\|1CR\|1PE\|6NW\|6WD 2016 F10 535i xDrive - AW - Retired 2011 E92 M3 - AW……………....ED April 29th, 2010 - Retired 2007 E92 335i -Space Gray.....ED Oct 19th, 2006 - Retired
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03-06-2007, 02:02 PM	#9
MrWorf Today is a good day to drive 10 Rep 93 Posts Drives: Monaco Blue 335i Convertible Join Date: Jan 2007 Location: California iTrader: (0)	I guess they think we'll be using the DVD for our massive mp3 collections and thus must have easy access __________________ Ordered 3 apr 2008 - Delivered 12 apr 2008 - Monaco Blue 335i Convertible Ordered 21 nov 2006 - Delivered 22 may 2007 - Monaco Blue 335i Coupe
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09-14-2007, 12:20 PM	#10
dmichael Lieutenant 25 Rep 452 Posts Drives: 2011 GTI Join Date: Jun 2007 Location: Massachusetts iTrader: (1)	I am hearing this high pitched whine coming from the loaner 07 328xiT I've been driving all week. Its really loud as soon as I open up the tailgate, with no key in the dash. Also, sometimes the whine comes through AM radio stations while driving. The car does not have CA or NAV. Oct 06 build date. Drives me insane. This is not normal, sounds to me like a bad ground somewere in the electrical system. My car is a Jul 07 build and it never did this. __________________ 2008 E90 328i - Sparkling Graphite/Terra/Dark Burl, 6MT, Sport, Premuim, Fold-down seats, iPod/USB(6FL). M-Sport Steering Wheel, ZHP M-Sport Shift knob, Euro fog lights. Euro Split Armrest
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09-14-2007, 03:43 PM	#12
ibimmer954 Major 138 Rep 1,424 Posts Drives: '23 i4 M50, '15 M3, '18 911 Join Date: Jul 2007 Location: San Diego, California, USA iTrader: (0) Garage List 2015 BMW M3 [9.75] 2023 BMW i4 M50 [0.00] 2018 Porsche 911 C4S [0.00] 2019 BMW X4 M40i [0.00]	I have CA in a 335i E93. After the car is off, if I go back and open the trunk, there is definitely a whirring sound in the trunk after the trunk is opened. It sounds like it's coming from the drivers-side taillight. Almost like it has something to do with the electronic latch on the trunk or something. It stops after a few seconds.
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09-14-2007, 03:47 PM	#13
e92phreak General 384 Rep 21,747 Posts Drives: E92 335i TiAg/E46 323i TiAg Join Date: Mar 2007 Location: CA iTrader: (1) Garage List 2007 E92 335i [9.50] 2000 E46 323i [0.00]	i always thought the high pitched twine was the power to the oil cooler. __________________ 07 E92 335i \| TiAg \| Step \| Padl \| Cmft \| Alum Trm \| PDC \| Nav \| Assist \| Sat \| Lthr \| Prem \| Sprt \| Rear Splr \| RDSport Quads \| iPod \| V1 \| LT Refl \| VS Clear Bra \| OEM Lip \| KWV2 \| Mtec Sides \| BBS LM-R 00 E46 323i \| TiAg \| 5sp \| Sport \| Roof \| RDSport Cams \| RDSport tune \| RDSport Shift \| Volk LE37 \| M3 spoiler \| PSS9 \| SuperSprint \| Brembo
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09-14-2007, 07:07 PM	#14
fragadellic Captain 15 Rep 949 Posts Drives: 335i Coupe BSM Join Date: Feb 2007 Location: Arizona iTrader: (0)	It's normal, at least for CA cars. They all do it. There are a lot of things that power up when you open the door, shut off the car, etc. Coolant pumps through the turbos depending on their temp after shutdown, comfort access powers up some of the convenience features... Don't worry about it. Now if your car takes longer than a second to start, i.e., long crank, then start to worry... __________________ E92 335i Coupe Delivered 5.30.07 \| Black Sapphire \| Black Dakota \| Grey Poplar \| OEM 230 19" Wheels \| Michelin PS2s \| GP Thunder 8500K Angels __________________________________________________ __________
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07-03-2008, 08:56 AM	#15
Hobbination Lieutenant 65 Rep 503 Posts Drives: 2015 M4 Join Date: Dec 2007 Location: Honolulu HI iTrader: (0)	I get the same thing on my Feb 2008 build 335i w CA...also comign from the drivers side truck area....Sounds cool though but I bet its a serious drain on the ol battery....whatever, its doing somthing and whatever its is, i like it.
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