When testing the washer system I also noticed bad function for the windshield so narrowed it down to that the checkvalves was not working as they should so ordered them aswell. The highpressure system works but also gets affected by the bad checkvalves.
The washer system is very complicated with 3 different systems with 3 pumps and they are separated with different checkvalves the separates the systems.
1: windshield activates by drawing stalk towards you and pump in enginebay activates.
2: headlights activates by pushing stalk forwards (when headlights are up) and activetes pump at the bottom of washer reservoir.
3: highpressure system. Activates by button on the underside of the pod and activates pump under the front bumper and drawes fluid from the small reservoir at the hoodlatch.
