Extreme ticking noise from underside - sound sample imside

Discussion in 'General Discussion' started by alistairgd, May 10, 2014.

  1. alistairgd

    alistairgd Active Member

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    My W204 has been doing this from new, as far as I can recall, but I think it is getting worse. I never complained before because my BMW 318 did the same before, but now it is annoying the hell out of me and does not sound right.

    Everytime I park up after a drive, this is what I hear from the underside. I held my phone right up to the tailpipe, so it does sound a bit louder in this recording...

    http://www.myqualityhost.com/ticking.m4a

    Is this normal, or should I take it in before warranty expires?
     
  2. Dec

    Dec MB Enthusiast

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    Sounds like hot metal contracting as it cools… an exhaust heat shield cooling down perhaps.

    Dec
     
  3. OP
    OP
    alistairgd

    alistairgd Active Member

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    Yeh that's what I thought, but I don't hear other cars doing it, so not sure if this is an issue worth checking at the dealer or not.
     
  4. Grey Area

    Grey Area Active Member

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    My car does that to, quite loudly as well. But nowhere near as impressively as yours. Must just mean you're driving it right :devil:
     
  5. Dec

    Dec MB Enthusiast

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    I have heard my own car do it occasionally, probably happens a lot more but I don’t notice it or I have walked away from the car before it starts.

    Dec
     
  6. OP
    OP
    alistairgd

    alistairgd Active Member

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    Stick your ear up against the exhaust and yours will sound like mine. :thumb:
     
  7. maska

    maska Member

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    Reminds me of the Paddy who tried to 'Blow Up His Car' :doh:
     
  8. evdok

    evdok MB Enthusiast

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    Sounds bionic to me;)
     
  9. grober

    grober MB Master

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    That's seems far too regular a noise to be an exhaust contracting. There are various electronic units maybe even the radiator cooled by fans which take some time to shut down maybe the fan blades of one of them is hitting the surround?
     
  10. renault12ts

    renault12ts MB Club Veteran

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    As above...that is not ticking, it is a rotary installation hitting something. A fan of some sort. Get under the car and pinpoint it...it shouldn't be difficult.
     
  11. renault12ts

    renault12ts MB Club Veteran

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    What's your nationality...just askin'.
     
  12. sssammm

    sssammm Active Member

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    Sound like fan on shroud, let it happen again and push the shroud around, see what happens
     
  13. maska

    maska Member

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    British ! And Proud Of It ; [ Born In London ] :thumb:
     
  14. OP
    OP
    alistairgd

    alistairgd Active Member

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    New centre section getting replaced tomorrow.
     

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