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Thread: On my new car: Strange click sound during Start / Stop procedure is driving me nuts

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  1. On my new car: Strange click sound during Start / Stop procedure is driving me nuts 
    #1
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    I collected a new Audi A6 Allroad 3.0 TDi 204hp last Friday. When driving around town, I noticed that the car produces a click sound, loud enough to be really irritating, when the car turns off the engine in the Start / Stop procedure. A similar click sound appears 3-8 seconds after the engine is turned back on in the Start / Stop procedure.

    I have recorded the phenomenon:
    VID 20141128 171856 - YouTube

    The click sound appears in the following sections in the clip (use of earphones is recommended when listening to the clip)
    0.06
    0.12
    0.17
    0.28
    0.37

    At 0.12 the click sound appears just as the gearbox shifts between D1-D2.
    At 0.37 I accelerate more gently, and the click sound then appears a couple of seconds after the gearbox has shifted to D2.
    The click sound does not appear when stopping and starting with Stop / Start deactivated.

    This click sound is driving me nuts - I have driven 20+ cars (mainly Audis and BMWs) with Start / Stop, none of those cars are making similar strange sounds.

     
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  2. Re: On my new car: Strange click sound during Start / Stop procedure is driving me nuts 
    #2
    Join Date
    Apr 2014
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    Norton, Daresbury UK
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    sounds like the mini relays for the various illumination of symbols

    i can here them click in and out for parking brake, auto/stop start symbols etc on my car
     
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  3. Re: On my new car: Strange click sound during Start / Stop procedure is driving me nuts 
    #3
    Join Date
    Apr 2008
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    Liverpool
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    Hi,

    I'm guessing from your location of Sweden that it is cold where you are? If so, I suspect it is a relay controlling something to do with the glow-plug and engine warming when it is cold. My old A4 did it when starting in winter, my A8 did it and my 2014 A6 BiTdi did it yesterday morning, which was the first proper cold day of winter here in the UK so far. Once the car warms up it stops clicking for me but I'm guessing your location is a bit colder - have you managed to get the car up to a normal operating temp. and has it then stopped clicking?
     
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