Just wondered if anyone else has this problem or can offer advice?

My Heated rear window on my Fabia doesn't seem to work, (or hardly at all!)

It seems to switch on, you hear the relay click, but very minimal demisting action occurs

:coder:

is the water on the inside of the glass ?

if so i suspect you have a water leak into the car , the usual suspects are inner door panels and washer pipe detachment

of course there could be an electrical problem , try turning it on and breathe onto the glass to steam it up , this will show if any of the heating elements on the screen are working