This happened to mine, the wiper linkage had broken at the connection to the motor. phoned renault dealer, they wanted £175 for a new one, so repaired it by drilling and tapping a hole in the drive spindle to the motor, locating the boss on the linkage over the spindle and fixing a washer to the end of the spindle using the tapped hole.
Hope this is of help.
Arty
January 2010