The wife drives 2002 scenic, and as of yet I have not checked the switch, but I do know it does not have an OFF position in the middle, I noticed it because my LAG II does.( I know glutten for punishment)!
Must check it now, as it implies it has already been replaced at some time with a different switch.
It would be interesting for V.O.S.A. or others to know why Renault changed the switch some years ago, as seems clear. Were they aware of potential issues then (without any/many failures) and improve the switch in the hope that the potential for failure would not materialise into actual failures?
Just a thought!