ABS Actuator Replacement - DIY Questions

Here's the thing;

Manufacturers and Master Technicians have tried to refurbish these highly complicated and design locked down master_cylinder/abs/regen/traction control/skid ecu/stroke_simulators without success. Most of them start out with a full understanding of how this brake by wire system functions.

If you came here and said I would like a low cost solution or I would like to understand the functions of this system, you might get some direction. As is, you seem to believe the school of hard knocks is the only way to learn.

 

You can't compare manufacturers and master techs to someone outside that trade because people bring different goals and talents to the table that affects the end solution(if there is one).

I simply want to try my hand at repairing it and if I can't come up with a repair then so be it. But you want to go into with a healthy dose of confidence, and of course with insights and warnings from others the challenges. It starts with the belief that you can handle challenges, succeses, and failures.

Its not a big deal. I might not even try to fix it any further.

 

You are willing to risk other's lives to save money on a critical brake by wire system because you are confident in your abilities even though you acknowledge you have no relevant experience, you are asking about a Highlander brake boosbter on a gen2 Prius forum and have demonstrated minimal knowledge of the system to date.

A competent person focuses on hazards. He has demonstrated ability to identify existing and potential hazards which can be dangerous to himself or others.

Reviewing the system theory of operation and repair manual on Toyota's TIS information system would be a good starting point. if cost is the driving factor, try your luck with a used part after you are sure you can subsequently run the special bleed and calibration procedures, skills required regardless of path taken. That could be your $200 solution.