Hissing sound from dash?

Delroy666

Delroy666

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#1
I recently test drove an '01 325xi that was for sale at a local Nissan dealer. Overall it was in pretty good shape (66000 kms on it) but as I was driving, I noticed a hissing sound coming from the left side of the dashboard. I couldn't tell exactly where the noise was coming from, but it stayed even after turning off the climate control and stereo. It almost sounded like a speaker when you turn up a stereo with no source, but when I turned the car off it went away gradually, so I'm pretty sure it was the sound of moving air from a fan or something. It was pretty annoying actually. The sales guy said this was normal, but he didn't seem to know much about BMWs to start with, and I've never noticed this when test driving other 325's. I'm not buying the car, but I wanted to see if anyone on here had any ideas as to what would cause such a hissing sound and to make sure it's NOT normal. Thanks,

Delroy
 
BMW_FaNaTiC

BMW_FaNaTiC

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Delroy666 said:
Some guy traded it in for a new Nissan.
Click to expand...
Thats sad, if you shop at nissan dealers for BMWs..
Of course every BMW u find at a nissan dealer isn't the best quality because it at a nissan dealer doh, if ou want tru quality go to bmw ur self, unless ur too cheap
[nono] [nono]
 
Delroy666

Delroy666

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BMW_FaNaTiC said:
Thats sad, if you shop at nissan dealers for BMWs..
Of course every BMW u find at a nissan dealer isn't the best quality because it at a nissan dealer doh, if ou want tru quality go to bmw ur self, unless ur too cheap
[nono] [nono]
Click to expand...
I'm looking for a pre-owned BMW, ideally a CPO. I'm sure lots of people on this board have bought their car used from a private seller or another dealer though. Does that make them cheap? The local BMW dealers don't have any pre-owned at the moment with the options I want. If a local non-BMW dealer has one that was traded in (I also wonder why, but it does happen) what's the harm in looking? You make it sound like I'm going around to all the Nissan dealers asking "Hey, you got any BMWs for sale?".
That's not the issue I posted my message for though, so allow me to clarify: I'm just looking for some comments about the hissing sound, you know, like if it's a common problem, easy to fix, etc.

Delroy
 
Kirby

Kirby

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I haven't heard any hissing noise from my dash on the '04 330cic. However, in the '94 325i a fan in the dash runs for a few seconds after the iginition is turned off. Supposedly this is the fan that draws air across the climate control temperature sensor, so I have read. Don't know if the newer cars have this?

In most cars (don't know for certain about BMWs) the divert valves, etc. for the A/C vents in the car are moved by vacuum. If one of those lines is off or cracked, you would hear a hissing sound, this I know from experience!
 
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