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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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Old 10-17-2010, 07:17 AM
Spucoly Spucoly is offline
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Location: Sherman TX
Join Date: Sep 2010
Posts: 70
Mein Auto: 02 bmw 325i
Noise behind my gages

There is this strange electric buzzing sound that comes out of my dash behind my gages randomly. I couldn't find anything in the wikie about this so I am asking you guys.
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Old 10-17-2010, 12:34 PM
jcourcoul jcourcoul is offline
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Location: Mexico
Join Date: Nov 2008
Posts: 5,192
Mein Auto: 2006 325Ci
A nest of crickets making wild and passionate love in the luxury of a Bimmer dashboard?

More seriously, it could be the little fan inside the A/C control panel. It is used to suck cabin air thru the thermistor for the automatic temperature function.

2006 325Ci
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Old 10-18-2010, 10:57 AM
ails92t ails92t is offline
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Location: Ohio
Join Date: Jul 2007
Posts: 76
Mein Auto: 2002 330Ci
The fan that cools the ECU box is mounted on the firewall on the driver's side. If it is making a noise it will sound like it is behind the instrument panel. Mine was making a chirping noise intermittently, not really a buzzing noise. Do a search on "cricket noise" if you think that may be your noise and want more info.

Fan was a DIY change and cost about $80 if I remember correctly.
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Old 10-21-2012, 09:06 PM
Reesan Reesan is offline
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Location: Atlanta
Join Date: Oct 2007
Posts: 14
Mein Auto: 2004 BMW 325i
I have the same thing happening to me. Just started a couple days ago but the one thing I noticed is that it only makes the noise when driving at highway speeds (usually 60 mph or greater) the faster I accelerate the more it goes on. And thats just it, It keeps on going constantly while im driving on the highway and needless to say its VERY annoying. Could it also be the fan that cools the ECU like ails92t said?
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Old 10-21-2012, 09:09 PM
Reesan Reesan is offline
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Location: Atlanta
Join Date: Oct 2007
Posts: 14
Mein Auto: 2004 BMW 325i
Also, I did search "cricket noise" on the forum but most of what is happening to other people is related to the air vent fans and so on. The noise im experiencing happens regardless of the air vents on or off. Most of the other people experience the noise while not moving as well where as I only experience it moving at highway speeds. The noise is nonexistent while stationary/idle or driving normal road speeds. Not sure if anyone knows any more than I do about what it could be...
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Old 10-22-2012, 07:56 PM
The Thomas J The Thomas J is online now
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Location: Staten Island, NY
Join Date: Sep 2010
Posts: 45
Mein Auto: 2002 325 Cic
Mine makes a whooooshing noise when I start from a dead stop.
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