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A6 quattro weird noises

Discussion in 'A6/S6/Allroad forum (C5 Chassis)' started by FCPete, Sep 13, 2009.

  1. FCPete

    FCPete Slowly getting better

    Aug 15, 2009
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    I've had my A6 for a month or so now and I've noticed it makes some unusual noises after I've parked it, not for long, but maybe 45 seconds.

    First noise is a hiss from under the bonnnet which I suspect is aircon related. Coolant level is fine - it's not used a drop in 2000 miles or so, but when I switch it off there's a noticeable hiss from somewhere. Climate works perfectly..

    Second noise only happens sometimes. It's from the rear of the car but I can't work this one out. It's very similar to noises a Hyperactively suspended Citroen I owned used to make. Sort of creak as if it is settling down for a good nights sleep. Doesn't sound like the exhausts cooling, more suspension related I imagine, but I don't have a clue what it might be.

    Anyone elses do this? Car drives perfectly, and passed the MOT today with no advisories. It's fsh and properly looked after but I always like to know what is causing the weird noises!
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  3. Cockney Boy

    Cockney Boy Member

    Nov 26, 2007
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    The hiss will be from your aircon unit, but the second sound, im not sure about.

  4. singhl

    singhl Member

    Oct 20, 2008
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    If you have an electronic parking brake - it is that, nothing to worry about, my one does it as well

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