electric window doesnt dip
 

ok i have posted elsewhere about the roof not coming back but have now worked out its to do with the windows. even with the roof up when you go to open the door the window doesnt dip down like it should. its an intermittant fault. when the window dips then all works fine. when it doesnt then nothing works as i am sure the roof wont come back unless it knows the windows are down.
anyone know what controls the window dipping ?