Hi, the hydraulic fluid is too dirty and I think that drain and replace it is not enough, so the question is if it is a flush liquid or is is possible to put something else to flush it and the drain it and refill with the right fluid.
use new fluid to flush the old any dealer can flush it 4 you as most newer cars have crappy, cheap brake lines and parts making corrosion happen in 3 to 4 yrs,,
bring it to a shop that has a brake flush machine. put new fluid in through the master cylinder and pushes the old fluid out through the calipers/wheel cylinders. so there is no need to bleed the brakes.
Nothing other than new brake fluid should ever, ever go into a brake system. It is possible to flush out the old while introducing new fluid only if the new is gently put in, so as not to mix too much (turkey baster?). It takes some time, but worth doing every 3 years or so.
