Hi everybody, I've just bought a Freestyle trim 2002 1.25 mk5 fiesta as my first car and Im tidying it up a bit.

When I was replacing the passenger fog light unit I noticed this random unattached hose coming from the engine and have no idea of what it is or where it goes.

It looks like it should be doing something - there is a bit of grime in it which suggests its not been connected for a while. Appreciate any help thanks in advance!