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Strange noise when lowering window

Discussion in 'Bodywork, Tyres, Wheels & Trim' started by Capra, Apr 15, 2019.

  1. Capra

    Capra Senior Member

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    Gloucestershire
    Your Mercedes:
    W204 2013 C350 CDI Pan roof
    This started out of the blue, when the drivers side window is lowered it is making a strange knocking sound. It is booked in for a service soon, but just wondered what inside could be the cause, it only does this during the lowering movement.
     
  2. davidsl500

    davidsl500 Senior Member

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    Your Mercedes:
    R129 SL500 - GONE!!, X Type 2.2D SE
    Most likely a window regulator - the teeth wear on the regulator and so there is play between it and the electric motor cog gear. It's more common shutting the window those last few inches - thats for older cars. New one's use cables but there are still plenty of gears to lose teeth...
     
    Last edited: Apr 15, 2019
    Capra likes this.
  3. OP
    Capra

    Capra Senior Member

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    Your Mercedes:
    W204 2013 C350 CDI Pan roof
    Ok thanks, if I was more car minded I would have a go at fixing, but I wouldn't have a clue where to start!!!
     
  4. Blobcat

    Blobcat Moderator

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    Your Mercedes:
    R171 SLK280 3.0, Land Rover 110 County SW
    Window regulator as per David above, can be an easy replacement or can be a PITA, I've done a few on various cars, all worked fine in the end but some really fought me getting the door trim and old regulator out (and not breaking the glass whilst doing it...).
     
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  5. OP
    Capra

    Capra Senior Member

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    Your Mercedes:
    W204 2013 C350 CDI Pan roof
    Ok thanks, not for me then, with my current levels of stress and impatience I'm liable to put my foot through the glass.
     

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