Inverter cooling reservoir level will not go down after removing plug

Kinda like vapor lock? If you undo the hose that comes out of the bottom of the reservoir for the inverter in between the engine and the inverter and you undo the hose from the pump that goes through the inverter or the output hose of the pump you should be able to blow you can stick another hose inside of the hose to make it longer and it'll be clean You should be able to blow right through the reservoir and blow the coolant right out of the other hose essentially onto the lower front plastics of your car if they're still there I do believe I have to go out and try this in a few minutes having a blockage in the inverter is possible I would think a little bit of air pressure like from a small compressor and a hose and a blowgun would blow that right through if not blowing through the reservoir back the other way I mean generally speaking the only thing that's ever been in this reservoir and in this loop is Asian red or Toyota coolant there's no way foreign objects should just be getting in the reservoir or any of the piping which is very little of to clog up the system If you've ever seen the bottom of the inverter or seen the inverter out of the car you can blow right through the coolant pipes on the inverter boom boom so sounds to me like you're going to be snaking some hoses blowing forwards and backwards to see if this is really a thing. My question for you is when the car is on and ready is the pump vibrating and running You can actually stick a McDonald's straw down in the top of the pump and you'll hear it like cards in the spokes of a bicycle that's the impeller flipping the straw as it whirs around. Just realize it's a mag drive type pump so it's not going to take much to stop the impeller and we don't want to really be doing that We want a lightly touch the impeller with the straw here the noise back out of it turn the mess off. Then we want to check our hoses and the waterway through the bottom of the inverter into the reservoir out of the reservoir on through the upper radiator I believe and back to the pump that should all be a pretty free waterway there is no thermostat no obstruction or shouldn't be I will be very surprised at what you find.

 

You're in Texas and you might be retired at your age I don't know You should go out and check that out when you get a minute I'd be super interested to know that you can't blow send air through forwards or backwards through the inverter That's quite interesting I mean there's no reason any rust or anything should be happening in there You know that's like a 5/8 passageway so not a lot's going to fit in there nuts bolts etc That's quite wild I haven't seen this on any of the four we have here like I say and they're all on the road matter of fact heading out right now

 

And nobody touches our Prius I might let somebody work on the diesel equipment but the Prius nobody touches them until it's time for an engine change or a transmission change I have a person that'll do that for me now because slinging engines and transmission days are past for me.

 

No I was just asking about the level in the inverter system they're two separate systems one radiator stacked on top of another literally if you can see a picture here somewhere that's basically what you'll see I have one sitting out of the car on the floor now but pictures don't play nice here have to be resized and all that nonsense but yeah just looking to see that fluid was full enough to be pumped if it's not near the full mark on the jug the pump may not move it. The straw test just determines that the impeller is moving so then with that being said with it filled up to about the line on the inverter that says full that reservoir cap off it'll even self prime as you're filling it you should start hearing it gurgle and the pump start to squeal and then it'll slow down when it starts to really pump and then you should start seeing movement in the reservoir nothing massive very light generally hard to see for most folks or a lot of people

 

First off do you feel the pump running car on whatever close the door go out to the front driver fender reach your hand down there where the pump is I hope you know where that pump is because you changed it and you feel it running It's vibrating when you crack the bleeder with it running it squirts fluid out of the bleeder on the very front of the inverter where the bleeder is connected? If yes then you're moving fluid so maybe you should read the code and make sure what the code is telling you The red triangle of death doesn't mean you're inverter pump is messed up just because you changed it the other day usually it takes about a month for the cheap ones to burn up and fail sometimes three that's 90 days. We're talking about something that's all happened here in the last five not saying that that's not possible but highly unlikely so what is your code really for The red triangle of death does not mean you need to check the inverter It just means some system is seeing something that it doesn't like and it wants you the human to use the scanner and have a look.

 

You first need to read the trouble codes with a Prius capable scanner.
https://priuschat.com/index.php?posts/3246758

 

The 1150 is a clogged coolant water weigh a bad coolant heat storage tank sensor etc I would think it's probably the sensor for the CHS but since you were having this coolant not moving maybe that's where this came from but now the coolant is moving so maybe you need to clear those codes and see if any of them come back. Replacing the hybrid batteries are pretty standard code after you get that code you want to look at your block voltages and Dr Prius and see if you want to play the whack-a-mole game or get a battery HV batteries generally go 8 to 10 years so your new one will probably out last the car given how most people do with automobiles. Just realized to play whack-a-mole you are taking the battery in and out of the car which is about 90 lb and for some people is very trying if not dangerous.

 

Generally hybrid batteries of this type of chemistry make 8 to 10 years of normal driving and usage most generation twos are well past that state so you have to act accordingly.