Yesterday when i started my car up the rear wiper stated to wipe the rear screen and didn't stop until i turned off the ignition.Now every time i turn ignition on off it goes.
Have removed the fuse as a temporary measure.
A quick search on here and other sites , and it looks like its a very common problem.Water getting in to the wiper motor switch mechanism.This appears to be caused by either the hose popping off when it freezes or something corroding internally.
I think on mine it's corrosion as for the last couple of months the jets have been blocking up.When i have removed them to clean i noticed they where brown with rusty water inside.
Now why anybody would manufacture tube that has water going through it out of mild steel is anybody guess !!!
So I'm bitting the bullet and getting it replaced sooner rather than later as i have heard it can lead to further problems with boot lock rear amp etc.
Does anybody know the cheapest place to pick one up or is it dealer part only, I'm not going down the ebay route as i want a new one.