On my car there are no less than four identical washer pumps. One washes the headlights, one does the normal screenwash, one does the intensive screenwash and one does the tailgate (mine is a Touring). It's unlikely all of your motors have gone so I suggest experimenting with the controls to make the intensive wash work and starting from there. I needed to replace the normal screenwash pump (unsurprising since it works the most) and it cost me about £40 as I recall. Worth reading the manual to understand how it works, especially the normal/intensive stuff and the programmable intermittent wipe...