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05 SLK 350, 06 Audi A6 4.2
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25 Posts
Discussion Starter #1
Hello,

I have an annoying and loud humming noise (kind of like someone blowing in a bottle of coke) when the air vents are set on high (5 or 6 setting). It also happens in the automatic AC mode when it blows a lot of air. It seems to come mostly from the center vents.

Anybody has this problem? What can be done to fix it?

Thx,

yves
 

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350 SLK
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1,528 Posts
Did you check to see if one of the vents is closed or partly closed. I noticed the noise last night and one of my vents was 3/4 closed and when the fan was on high the air trying to rush the partly closed vent caused that noise.
 

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Registered
05 SLK 350, 06 Audi A6 4.2
Joined
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25 Posts
Discussion Starter #4
I checked the vents and they are fully open when I get the sound.

Based on the amount of responses, I guess I am the only one among all the board members who is having this problem...

Yves
 
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