renault megane dynamic 06 how to get my window to close tight to the seal ?

your window has lost it's stop limit. disconnect the plug near the door hinge for 30 seconds, then drive the window to top and hold button for 2 seconds, this will cure it.
"https://sites.google.com/site/proluxelectronics/how-to" great help with loads of info.

thejamesclan
November 2013

I have read of Renaults ongoing window regulator problems and they seem to fail to get to the bottom of the problem,I think there are warranties available for your problem,or part warranty so would enquire at a dealers about your problem.

cdc
September 2013