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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 10-21-2007, 07:58 PM
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mfear mfear is offline
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squeal/moan when i am in reverse?

When my car sits over night and I get in in the morning to back out of my garage, the car makes a load low-pitched squeal/moan when I back up..

wtf is that?!

'04 330ci Auto.
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  #2  
Old 10-21-2007, 08:31 PM
Narcisse91 Narcisse91 is offline
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Does it sound like it is coming from any particular area? Wheels, under the hood, back seat, etc?

Otherwise, it could be any part that moves...
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  #3  
Old 10-21-2007, 08:39 PM
TRP TRP is offline
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Is this noise before or after the garage door goes up?

T
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  #4  
Old 10-21-2007, 10:59 PM
geeek204 geeek204 is offline
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Could it just be the mirror moving down?
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  #5  
Old 10-22-2007, 07:17 AM
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Quote:
Originally Posted by geeek204 View Post
Could it just be the mirror moving down?
no.
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  #6  
Old 10-22-2007, 07:17 AM
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Quote:
Originally Posted by Narcisse91 View Post
Does it sound like it is coming from any particular area? Wheels, under the hood, back seat, etc?

Otherwise, it could be any part that moves...
back of the car
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  #7  
Old 10-22-2007, 08:06 AM
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v33_n0d3 v33_n0d3 is offline
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You ran over a dog you bastard! (Kris' joke :P)

Does this happen every time you back up or just on cold mornings? BMW's usually whine when they reverse.
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  #8  
Old 10-22-2007, 10:21 AM
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cold mornings.. but it's not that battery-operated whine.. it's a squeal.. similar to if your breaks squeaked, but a deeper sound.. like ghosts moaning from under the car!
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  #9  
Old 10-22-2007, 10:41 AM
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Belts?
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now, go burn your Man Card, and buy yourself a Camry....
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  #10  
Old 10-22-2007, 11:06 AM
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In this age of digital audio/video the illustration of this issue is BEGGING for digital video.

T

Last edited by TRP; 10-22-2007 at 11:13 AM.
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  #11  
Old 10-22-2007, 11:13 AM
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When you park, do you use your parking brake?
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  #12  
Old 10-22-2007, 11:25 AM
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Thats funny, I wonder if it makes the same noises my wife makes when I put her into reverse
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  #13  
Old 10-22-2007, 12:21 PM
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milobloom242 milobloom242 is offline
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Quote:
Originally Posted by Vornado View Post
Thats funny, I wonder if it makes the same noises my wife makes when I put her into reverse
thread title is hilarious
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  #14  
Old 10-22-2007, 02:49 PM
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Yes
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  #15  
Old 10-22-2007, 02:57 PM
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Quote:
Originally Posted by mfear View Post
Yes
Is this an answer to my question?

Try not using the parking brake. Easy process of elimination....
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  #16  
Old 10-22-2007, 03:02 PM
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Yes, KrisL.

lol.. is it not true that the e-brake helps to keep the car frmo resting on the transmission?

not recommended in an auto?

and how does the e-brake cause that sound?
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  #17  
Old 10-22-2007, 03:20 PM
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Quote:
Originally Posted by mfear View Post
Yes, KrisL.

lol.. is it not true that the e-brake helps to keep the car frmo resting on the transmission?

not recommended in an auto?

and how does the e-brake cause that sound?


Yes, of course it's true. I only use the parking brake when parking on a grade myself. Level ground I don't bother... but perhaps thats just me.

Sounds like yours might just be sticking a bit
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  #18  
Old 10-22-2007, 03:24 PM
TRP TRP is offline
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The e-brake is largely mechanical device; relying on a few simple cables, a pulley or two, and a lever. The e brake handle is your lever to pull the slack of the cables, which in turn pull on another set of arms / levers to press the brake shoes/pads against the brake drums/disks. If any of the cable housings are bent, dry, or otherwise - the cable tension might not relax enough and thus you'll hear a dragging of the brake shoes/pads on the drums/rotors at low speed/until the cables relax all the way.

That's how I understand it anyway...

T

Last edited by TRP; 10-22-2007 at 03:29 PM. Reason: Shoes/Pads, etc. I think the rear rotor is a drum within a disk.. for e-brake only...
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  #19  
Old 10-22-2007, 03:52 PM
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ok, so no biggie. thanks, guys.

so for confirmation, should i -- or should i not use my e-brake? (keep in mind that it's an auto and i live in FL).. i do feel my car rock forward and onto the tranny when I get out.. we're flat, but not perfectly flat and our driveways are not flat.
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  #20  
Old 10-22-2007, 04:08 PM
TRP TRP is offline
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I'd just 'test' to see if that's what it is first. Tonight - don't set the e-brake and in the morning see if the moan is still there. Don't worry about not using the e-brake tonight. One night isn't going to brake the transmission. If it turns out to be the issue, it should be a simple fix.

T
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  #21  
Old 10-22-2007, 04:11 PM
Narcisse91 Narcisse91 is offline
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Yes, use it. KrisL's recommendation was to determine if it was the cause of the squeal. If you use it every time, and it squeals, and you stop using it, and the squeal goes away, it was the brake. Once you know for sure that this is the cause, you can go back to using it again. Unless your garage has a steep slope, parking without it overnight isn't going to do any harm.

Mine does this same thing, although it doesn't matter if it is reverse or not. Pulling forward out of a parking space makes the same noise. It is a squeal from the back of the car, and I have decided it is the brakes dragging. It goes away after the first or second full rotation of the wheels.
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  #22  
Old 10-22-2007, 05:49 PM
Euro Styln Euro Styln is offline
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its the tranny, mine does that too in the mornings especially when cold. hope they dont die out.
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  #23  
Old 10-23-2007, 07:36 AM
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mawana mawana is offline
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It's the e-brake! I had mine tightened a few months back and all is fine now. Another thing, open your left rear window and try pressing the car downwards. You should be able to replicate the squel - take it to the dealer and they will tighten the e-brake cable(s) and all will be fine.
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  #24  
Old 11-22-2014, 02:33 AM
razorback65379 razorback65379 is online now
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is the warning light on by the transmission gear indicator (p,r.n, etc on dash)? my friends car is doing this and im trying to upload a video.. to see if its similiar. uploading to youtube.. should of been more specific.. this noise is when r is selected still on the brake.. no movement.

******** width="420" height="315" src="//www.youtube.com/embed/ZkrF_1-mBQ8" frameborder="0" allowfullscreen>*********>

in case that does not work..


Last edited by razorback65379; 11-22-2014 at 02:40 AM. Reason: video
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