Something very strange has happened. Yesterday we went out in the Polo and found that the wipers were behaving as they should. When the wipers were turned off, they stayed off. They worked as they should on the other positions.

I'm baffled as I did nothing other than wiggle the switch around a bit to get the part number. I also connected it to the VCDS but didn't clear any codes. The fault has been there for weeks.

Not sure if it will return but thanks to Crasher & Keithuk for the support and advice.