On mine the window keeps sliding off the little black peg thing that the window brackets sit on.
IE the silver metal clamps that hold the window in place... the things they sit on (two black metally looking peg things on the regulator) dont hold one side of the window in place.
I can take off the door card and sit the window back on the runner but a day or so later it will just go clonk and fall off again
!
Does this mean new window time? I tried wrapping a cable tie round it and doing it tight, worked for a day or two but broke again, might try it again with the aid of some contact adhesive and see if that works!!!
Someone on the polo forum said they put a screw into the black plastic pegs things, but mine look like black METAL peg things!!!