Hi Kelly this is a very common problem on all 206 models.No need to replace the switch What you need to do is remove the housing around the steering wheel,light and wiper lever.
Remove the two screws and the electrical connector on the block at the end of the lever,Then open the block and clean the steel tracks (They are shorted with metal filings from the steel pin that connects them). Re-assemble and you are good to go,Good luck
Gary
May 2008