You might be able to find a mechanic that has the right equipment, or you might find it easier to take it to a different dealer. There's a 2017 manual online that describes the repair procedure here. If you're just changing the fluid, it's not as complicated as what's described in that link, but if you get any air in the line, then there's a procedure half way down the page that talks about using the "KDS" to purge the air and re-train the car. The KDS is a diagnostic tool that costs a little over USD $5,000. Anyone with the right equipment should be able to flush the line without introducing air, but if they make a mistake and they don't have a KDS, then you might wind up needing to visit the dealer after that. And given that several people have had concerns about shifting problems, one can speculate that periodic retraining with a KDS might be an important part of this maintenance procedure.I am having second thoughts. I think I am change regardless if it is clean or not. I don’t want anything happening because they might lie and say that I refused. I think I am going to do to research to find a mechanic who specializes in hybrid cars. The problem is that it is hard because most don’t know how to work on hybrid cars.