Here is litle guidance to change PAS fluid, and reservoil!

Changing powerstreering fluid, whit my mate. Doing system flush at the same time by using 2 reservoils, old and new one.

Raise the car, to get tires up, dont start the engine. Put power on by pressin START & STOP until it switches electricity on

Leave the outlet hose to OLD reseroil and, plug the inlet off from it.
Connect NEW reservoil to inlet hose and plug outlet.

Avoid air in to the system, fill the new reservoil whit Pas fluid, and turn wheel to other side, until it fills the old reservoil whit old fluid and suck it away, and remember to keep the new reservoil continiously filled.

Turn wheels again to otherside and continue until you get new fresh fluid to your old reservoil

https://www.youtube.com/watch?v=IUDLiMR-ips