Hi I have just got my hands on a lovely 2008 Exclusive 1.6 Sensodrive & am having an issue with the heated rear screen. When I press the button to turn it on I hear a click from the back, the button lights up for a few seconds & then goes out. This then causes the roof & boot catch to stop working, I have to get out & press down on both corners of the upper boot lid to get them working. As winter is on it's merry way I would like to get to the bottom of this as soon as I can so any input would be greatly appreciated.