This fault happened some time ago initially, but it only happened once, and when I had a need to meet up with someone in Slough, and no not in an office.
So it was a strange thing that happened, and it did it near so to speak its maker.
I returned to the car, and went to start it. The thing to note here is that it was not raining, and the wiper stalk had not been touched at all.
While cranking it I noticed the wipers started moving, now this is a S2 Activa, and has the rain sensitive wipers, and this function was not turned on.
Now like in the film Christine the car was doing something of its own accord. The wipers were sweeping the screen, and would not stop.
This was a wind up because it was on the way to the meeting, and now decided to play up!
I gave it a little while, and switched off the ignition, but it would not stop, every time I turned the ignition on, the problem showed again. I tried this several times but still it would not stop!
As I had stopped at a fuel station when this happened I took a break, having phoned the person I was meeting, and let the car be for a while.
When I returned after a lunch break I was optimistic it would be O.K.
So I got in the car and cranked it over, and the wipers went again although briefly, and then stopped.
As I had to get to this meeting, and it now seemed O.K. I drove there, and nothing happened again with the wipers, and it did not happen again after that at all until recently.....................
Well the time interval between what happened above, and the present day has been a matter of some years, but now it has returned, and it has happened several times within the last few days
This does not happen when driving, and when one operates the wiper stalk when you really do need them they work as normal.
So, please does anyone have an answer as to why this is happening.

