Problem Rear window washing system


Hello dear colleagues. I would like to ask you if you have faced the problem with the rear bumper on this model?

It hasn't sprayed anything on the rear window for a while. At first it had a low flow and now it doesn't spray anything anymore. The pump works and the relay clicks but nothing happens. I insisted and nothing. I looked in the trunk or tailgate and there are no leaks or traces of leaks. On the face it works normally. The installation did not freeze because I was careful to have windshield fluid corresponding to the outside temperatures.

Any experience similar to this model would be useful. Thanks !

I suspect that there is dirt on the pipe or the pentur sprayer because this model does not have a filter screen in the windshield fluid tank.