Driving to a friends tonight nad used the rear wiper and it's lost the plot. Seems to work when you hit a bump or go round a corner and just wipes when it wants!!!!!

Is it possible for it to get damp some how??

Cheers

I'd guess it's the standard VW motor, in which case yes.

Have a look here:

Rear Screen Washer Repair Guide

Nice one,

Thank you for that.

Will strip the trim panel off and have a look.

Cheers