The best thing you can done IMO, let your car sit in a garage for a few hours if you can.
Spary as much grease as can can in the lock outside and in the latch when the door is open.
I speak french if that can help you, feel free.
Nic.
Contour 99 MTX V6 fully loaded, stock with 110000km. Illuminated sunroof switch. About to do the mystique rear dome light conversion with eyeball dome light.