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Strange noises from dash

Discussion in 'Air Conditioning' started by Corb2000, May 11, 2009.

  1. Corb2000
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    Corb2000 Million miler

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    I’m hearing servo type whirrings from the top of the dash of my 2002 B6 3.0 Cabrio, even when the ignition key has been taken out. These sound like the vents moving, anyone have any idea what’s going on and whether this is a problem?
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  2. Staz
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    Staz is a retronaut Staff Member Moderator

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    All the climate control systems are controlled by servos. For example when you press the button to direct the air just up to the windscreen it's a servo that moves the flap.

    I can't say I have ever noticed mine moving after I remove the key. Is it a constant noise or just every-so-often?

    Any faults would be flagged up with VCDS, have you got access to it?
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  3. Corb2000
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    Corb2000 Million miler

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    I don't have access to the VAGCOM but the car was in for some work about a month ago after an engine cold air induction fault caused the EML to light up, should any other problems have been evident when the computer was read then?

    The noises do sound like servos and seem to settle down after a while, other forum members have said they hear the same after switching off their B6s, so I'm not alone but still do not know whether it is a (common) fault or not.
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  4. Staz
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    Staz is a retronaut Staff Member Moderator

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    The only way of knowing really is by either pluging in VCDS, comparing it to another similar car or by taking it to Audi.

    I've just noticed you're in N Yorks. Where abouts? I'm there too.
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  5. Corb2000
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    Corb2000 Million miler

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    I'm in Harrogate and work in Wetherby.

    I ran through all the manual climate control settings and everything seems to be doing what it's supposed to! I heard the same noises yesterday on a quiet bit of the A1 so they don't just start when I switch the car off.
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  6. Staz
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    Staz is a retronaut Staff Member Moderator

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    Hmm I see. Maybe the flaps need a lube up or something, I don't know.

    I'm near Thirsk, if you want to come over and see what VCDS comes up with then let me know, but to be honest I think if everything works ok you'd be better off comparing it to another car. Just go to Harrogate Audi and see if they have a simlar car in, ask for the keys and have a play.
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  7. Corb2000
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    Corb2000 Million miler

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    Thanks for the offer, I'll compare it with another A4 when I get the chance. Several other people have reported similar noises on vwaudiforum so I'm not alone and if it is not normal operation then it is at least a common problem.
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  8. Garfie
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    Mine does this too and the servo that normally makes the noises is buried behind the dash in the middle. It sounds like the servo is fidgeting and cant settle.

    I also noticed that the passenger side vents always blow slightly hotter than the drivers side.

    After speaking to a mechanic from Audi he says that its the servo that controls the temperature distribution between drivers and passenger side thats the problem. It needs resetting or replacing as its not happy with the position its in, hence why it keeps 'fidgeting'.

    It also throws up a fault code on mine when I scan with vag-com.

    You can check/see the servo motors by taking the glove box out and/or the drivers side dash lower panel out. You'll then see which servo it is fidgeting and making the noise.
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  9. Staz
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    Staz is a retronaut Staff Member Moderator

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    Have you tried to get it fixed? What's the likely cost?
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