Prius Brake pump running every 55 seconds ( Brazil)

Thanks, Mr. Chapman. It's a big job so even having studied the project with online resources I'm hesitant to take it on my own, but now is the time so I'll make an appt and get one more worry off the list!! It would be nice to milk a couple more years out of the car, and it is otherwise well maintained and in excellent shape to last another 100k IMHO. Even if I sell it I can't stick the next guy with that kind of repair. I already installed FLP HV batteries last year and overhauled front brakes, new tires, etc. etc. Great car and worth keeping. I appreciate your wisdom on the subject.