E-Class (W210) 1995-2002: E 200, E 220D, E 240, E 290TD, E 300TD, E 200, E 240, E 280, E 320, E 420, E 430 (Wagon, Touring, 4Matic)

What the hell is that buzzing

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Old Jan 26, 2004 | 05:01 PM
  #1  
Maja216's Avatar
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E 420
What the hell is that buzzing

Hello guys I hope one of you can help me out with this. My car is making an anoying buzzing sound its coming from the domelight and I delive it some sort of fan it just started about a week ago I comes and goes. I cant figure out
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Old Jan 27, 2004 | 08:48 AM
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2022 CLS450 AMG 4Matic
You have a buzzing "fan sound" coming out of your domelight ? I've never heard of this. Could there be something wrong with the bulb that it's buzzing? Do you have a stock bulb or a custom colored one?
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Old Jan 27, 2004 | 09:42 AM
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You'd better be careful its not a current leakage....it may short circuit the entire system.....good luck!
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Old Jan 27, 2004 | 09:59 AM
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Its a stupid little fan in one of those small slits up there. I used to get it also but havent in long time. I just kept a small toothpick in my ashtrey and when it came on i put the toothpick up there to stop it. Normally all you have to do is stop the fan and it will stop the noise. I had been getting it a lot this summer but not in a long time. Sorry i couldnt give you better help, just my way of ghetto rigging it.
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Old Jan 27, 2004 | 11:42 AM
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Very interesting, I had no idea ...
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Old Jan 29, 2004 | 06:28 PM
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Thanks for the input guys Now I wonder what the hell that little fan does??
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Old Jan 29, 2004 | 06:47 PM
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Originally posted by deuce zer0
Sorry i couldnt give you better help, just my way of ghetto rigging it.
Bro, in a pinch, the ghetto rig is the best way to go...
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Old Jan 29, 2004 | 08:33 PM
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I think I'm going to try a little WD-40 first but if it fails Ghetto will be my middle name.
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Old Jan 29, 2004 | 09:06 PM
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Originally posted by MBZ12
Bro, in a pinch, the ghetto rig is the best way to go...
I realize that.....the tooth pick is still in the ashtrey

Maja, let us know if you ever find out what the fans purpose is and/or what is causing the noise.
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Old Jan 30, 2004 | 06:33 AM
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The purpose of this fan is to draw cabin air to the temperature sensor controlling the A/C and heating. In the past is was only there if at the same time the car was equipped with a sun roof. But maybe now its always built in.
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Old Jan 30, 2004 | 09:44 AM
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Thanks for that bamberger_1, that makes some sense.
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