Warning light issue

After returning from vacation, I found that one door of my 2007 Prius was left open while we were gone. I tried jumping the car. Long story short, I accidentally reversed the polarity and fried the main fuse block. I just replaced the fuse this last weekend and it's been running fine.

Until today

I drove to work and everything was fine. Then at lunch I got in the card and started it up. The red triangle came on with the exclamation point. Also the VSC light and the orange exclamation point in the Circle with the ( ) around it.

I'm thinking that even though I checked all the other fuses in the car I might have missed one. Any other ideas what may be going on? It seems that it couldn't be isolated from the fuse issue. I read a post about an inverter pump but wasn't really clear as to what that was about.

 

The check engine light is not on.

 

I had the 12V battery checked at an AutoZone since I just bought it about 2 months ago. After I had recharged it using a charger, it checked out just fine.
Here are some pictures of the warning lights. I just went out there to check the reservoir and now I have a battery warning light.

I shot a short video, mostly for the sound. I seems as if something is trying to engage where it whirs for a few seconds, then stops. Then it starts up again and stops. I'll try and get it on YouTube and link to it from here.

 

Here is the clip where you can hear the sound. I had the wrong reservoir for the coolant. I'll check that again.

 

I checked the pump and the coolant is circulating. I found the diagnostic screens and checked the battery voltage which is showing 12.1V. I didn't go driving around, so that may not mean much.

The big question for me is "can I drive it?". I have an appointment set up with my dealer for Monday, but I need to get around before then. I already was without it for a week while I waited for the fuse block to come in.

As I mentioned earlier, I checked continuity on all the fuses in the section under the hood. I found two bad fuses in addition to the main block. I visually inspected all the fuses under the steering column. All those were fine. I also checked the fuses at the 12V battery and those were fine as well. So other than possibly a main battery problem, I'm not sure what the battery indicator could be. I do have 184,000 miles on it.

 

Had a friend read the codes. P0A08, P0A09, and C1310. Those are DC/DC converter for the first two and HV System. He cleared the codes and we restarted the car and they instantly came back.

 

I checked toyotapartznet.com where I got my fuse block and it has the whole inverter for about $3425.00. Is this what you are talking about? That's a lot of money to pay for swapping the polarity. Crap.

I've seen some references to the Inverter and Converter. Are people using those terms for the same thing, or is it really two different parts? It seems that it is two different parts.

 

Is this the part?
G9270-47040 - Genuine Toyota CONVERTER ASSY, W/AI

I don't have much issue replacing fuses and the 12V battery, but should I be messing around with the inverter since it has the hybrid battery and high DC voltages?

 

I took the car into the dealer today. After having the car for two hours, they told me that they cleared the codes and were test driving it, but had made no other changes. The tech wanted to talk to me about the fuse I replaced. While we were discussing it he got a call from an engineer in California about how to test the inverter. The test drive showed no issues and the warning lights didn't come on at all. So he ran through another set of tests on the inverter and then after a total of 3.5 hours all they could say is that "the inverter is failing". And to watch for the lights to come back on. If they do, then I should have the inverter replaced. They quoted about $4,600 to have it done.

So this brings me back to an earlier post about changing the DC/DC converter that is part of the inverter. I'd like to tackle replacing that part since it seems I can get it for about $500. But if I replace it and it doesn't fix the issue, then I need to replace the inverter and probably will lose the $500 since my understanding is that the converter come as part of the inverter. Can someone let me know if that is accurate?

 

Thanks for the help clearing this up. I understand now my confusion over the converter and inverter. Looking for parts now at some of the suppliers recommended on this site.