2009 Prius fusible link replacement then warning lights and...

It is really hard to know without reading the codes. I think you are correct, this looks like a reversed jump start.

Since you do NOT have the big master warning triangle or the !Problem car on the MFD, you may just have had codes thrown during the jump start and now they need to be cleared. Possible.

For giggles, just turn the car to READY and then off again about 3 times. That should clear the codes enough to start. If that doesn't work, then 12v disconnect for a while may help. If you have a Techstream that is the best option, read the codes see what the car is trying to tell you. Right now the car is telling you that something may be wrong. It is best to at least record what it thinks is wrong before you just say "whatever, keep going".

 

Additionally I really recommend some of those "smart jump starters". They don't have polarity and after you connect them, an LED turns on and the cables make a safe no-spark correct polarity connection for a jump. It's the only way I ever use my Prius to jump (as the host).

Additionally I have a little lithium battery pack with jump starter leads. I have successfully jump started a huge 90's Suburban, the kind with TWO 12v batteries under the hood...

 

1. Most stored DTC would have been cleared when you replaced the fusible link assembly, since that would require disconnecting 12V power.
2. Look for blown fuses. In particular, look at the 10A GAUGE, 15A DOME, 15A ECU-B, 7.5A ECU-IG, and 7.5A ACC fuses. Use an ohmmeter to verify continuity, do not rely solely upon visual inspection.
3. Once you have ensured that all blown fuses have been replaced, see if the car will become READY.
4. If it does not, get Mini VCI so that you can retrieve the logged DTC.
5. The most likely reason for continued problems after a botched jumpstart and replacement of the fusible link and blown fuses is that the DC/DC converter within the inverter was destroyed. This means you would have to replace the inverter. However you should retrieve the DTC to verify this happened.
6. If you can get the Prius to become READY, then measure voltage across the 12V battery. If you measure much lower voltage than ~13.8VDC, that is proof the DC/DC converter is not working.

 

Mini VCI runs on a Windows XP or Windows 7, 32 bit OS laptop. I bought a used Dell laptop to dedicate solely for use with Mini VCI as well as the cloned Jaguar SDD software (similar in concept to Toyota Techstream). That particular laptop came with Windows 7, 64 bit OS so I had to remove that and install Windows 7, 32 bit OS.

You can buy Mini VCI on amazon.com. This is the one that I bought, but there are many vendors that would probably be OK:

 

You can also just run it in a VM. I use a Win10x64 for my host of everything but have an XP x86 just for Techstream. Never had an issue that way.

 

Yes, for that matter I have run Mini VCI on a MacBook Pro using Boot Camp and Windows 7, 32 bit OS. However due to residual concerns about potential virus infestation on the bootleg Toyota Techstream, it gives me peace of mind to dedicate a separate computer for auto diagnosis purposes.

 

im having the exact same issue with my 09 prius as well but i cannot find where to get a new fusible link. could anyone send me a link to buy it so i can get mine back in working order? its mine and my husbands only car right now and we really cant afford to get a new one right now.

 

You could buy this from your local Toyota dealer; part number 82620-47050. Or you can buy from one of the Toyota dealers that sells parts at a discount over the web: 2004-2009 Toyota Prius Fuse Box 82620-47050 | AutoNation Toyota Gulf Freeway

It is not that easy to replace the fusible link in the main relay/fuse box, be advised this is not a minor task.