2007 Prius inverter pump replaced but car still won't star

Hello everyone,

About a week ago, I was driving on the road when my dash went black and my car turned off all of a sudden. I was able to pull over to the curve as it was happening. I had no check engine lights prior, so it was quite a shock. At that point, I tried to turn on my car to see if it would start and all that was working were my car lights when I opened the door and the one dash light icon that tells you the car door is open. The rest of my dash was black and would not start. I had my car towed to my house so I can troubleshoot.

When I got to my house, I started to go through the fuses and found the 15A fuse was burnt that went to the inverter pump. I replaced the fuse and then attempted to turn on my car. As I attempted to turn on my car, I started to see smoke near the pump so I turned off the car and removed the fuse. The fuse was still working but the pump looked to be bad. I also saw I had almost zero coolant for some reason so I determined the pump was bad. I changed out the pump two years ago with an Amazon brand so that probably wasn't the right move.

This time, I went to get the dealer pump since the old pump didn't last that long. I was able to change out the pump successfully. I did not notice any damage to the plug physically so I plugged it back in. After everything was installed, I put a new 15A fuse in and have no results. I think my 12V battery may have died too because nothing turns on now including car lights and powered windows. When I had the 12V battery plugged into my portable charger, the car lights came on but still no dash lights still. The weird thing is if I take out the 15A fuse that goes to the inverter, the 12V to the car turns on. If I put the 15A fuse back in, the car will have no 12V power.

Has anyone dealt with this? Could it be the inverter pump plug? I would appreciate any suggestions!