2017 Toyota prius 36000 miles ball joint failed $4000 in damages

Hello, define: "ball joint failed"? I'd be shocked if it failed, rather than was physically impacted in some way. Keep in mind: Your Toyota has a 3 year / 36,000 mile factory warranty that covers manufacturer defects. If you truly feel this was a defect, I'd seek guidance at your local Toyota dealership for goodwill consideration, as you seem to be over 36,000 miles. Additionally: sounds like you have possible body damage now that you are at $4,000? Your auto insurance company would be more than happy to subrogate on your behalf if Toyota is responsible.