On two of my Renaults the rollers which are located
in the door dry out and start seizing causing
I views mine by initially spraying some wd40 on
them and tried rotating them with the blade of
a screwdriver. Be prepared to open and close
each affected door for up to 15 or so mins and
they should start to free up.
Once running free put a couple of drops of clean engine
or similar to lubricate (wd40 won't be heavy
enough to lubricate long term).
Once a month or so I routinely put a couple
of drips of
to the hinge and strap components
to hopefully keep them good.