L322 washer pumps

Have no fluid on rear window. Could someone tell me where pump is located ? It is three of them in reservoir.

Hi, just a thought, have you checked the non-return connector in the pipe at the wiper motor, also my two cars had the same blockage and leak in the motor housing that stopped water getting out of the jet in the wiper arm. The arm connection to the motor can also be bent over or blocked.
Tricky.

Then i have to remove upper trim. That is hell.

got trim off. valve stuck. Removed valve , but no fluid coming. Pump is new and i hear it work. Used air to to check that i had the real pipe.

Here you go

thanks. think pipe is stuck some place.

Do all the others work as per the stalk position? previous owner updated front end on mine to the 2006 model and mixed up the wiring to the pumps. I think the rear wiper did the headlight washers

All works. When i use an ext. Pump it comes gluid rear. When connected to int. Pump , no fluid without oneway valve.

Rimmer brothers have the same part number for all 3 pumps, have you tried swapping them round?

Hi, is it possible that the non-return valve has blocked and damaged the pump? I agree you should try swapping the pump with one of the others and without the non-return valve to see if that works. If so, it looks like you'll need a new pump and non-return valve.
Your not alone with this, I just got home from a drive and I've got no screen wash to the rear now. Must have been due to the lockdown lack of use. What fun.
Let us know what you find.
Tricky.