06 Prius: Hybrid coolant pump not working and coolant leak

I'm gonna guess that someone forgot to close the inverter coolant bleed valve (or didn't completely close it) and that's where the leak was. I've never heard of a leaking inverter pump, especially one without a hole in it. Not sure I'd trust them to replace that pump. It's a pretty easy job anyway.

 

You can make a claim against the dealership for the failed pump. When the technician change the coolant he could’ve damage that pump, there was no mention of a bad pump before the service was performed

 

If the Toyota stealership services your coolant system and the next day coolant level is low they failed to do the job and claiming the pump failed is BS. They either did the coolant job correctly, or they failed to do the job correctly. And if the pump failed and coolant was at the correct level, then ok, maybe that was a coincidence.

But if I were you I'd refuse to pay for the coolant pump because it was working fine the day before they failed to put enough coolant in the system. For them to claim that it's not their fault and blame it on a failed coolant pump that worked fine when they failed to finish the job correctly the day before is dishonest and I'd go full on Karen on them until they either covered all the costs for breaking the coolant system, or until every last employee I escalate my complaint to hates their job.

 

Well if I recall the same red coolant is used both for engine/radiator and inverter and both pumps are subject to repairs.
Usually the leaker is the engine pump in my experience. We never replaced the engine pump but the inverter pump life was about 80000-miles so we replaced that twice over 200k miles..