Thanks for all of your help. I misread the manual, seemed odd to have two ways to do the same thing, and had just had BCU changed so jumped to the wrong conclusion. Tried the proper way and I can hear pump but no fluid comes out should be an easy fix.

Pushing the arm forwards operates the rear wiper. It is the rear washers that should operate when I press the end of the stalk. At the moment rather than thawashe

According to the manual, you pull the stalk to operate front and press end to operate rear washers. The front washers work ok but when I press stalk the front washers operate instead of rear. Has anyone had this issue? Is it a problem with the BCU software?