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what is it?

vw754 Mar 22, 2007

  1. vw754

    vw754 vorsprung Durch Technik

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    what the small button inside filler neck,and whats it for?
     
  2. inigoj

    inigoj Member

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    I think it closes one of the vents in the filler neck while the fuel cap is off, so that it does not fill/overfill with fuel whilst filling up.
     

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