2010 Prius completely dead. All warning lights lit up –

Meet me thanks the presence of those codes indicate a bad high voltage system when they recheck it they're going to get the same codes I believe

SM-A715F ?

 

Guessing they managed to run the hybrid battery down, maybe had it "On" for a protracted time. These cars don't often do well, in the hands of valets, window tinters, body shops, pretty much anyone who borrows it short term. Poor design in that regard.

That said, ours has been in body shop multiple times, no problems. But they are vulnerable methinks.

 

I would "start" with the basics like a blown fuse or fusible link. The 125amp fusible link and several others are known to blow on a reverse polarity jump or reversed 12v installation (harder to do unless a "close enough" battery was used). The reversed polarity jump is too common and the fuse is not easy to see much less access. I will share the easy inspection secret below. Use a flashlight in the engine fuse box.

Second step is to check the rest of the engine box fuses, one at a time, replacing each promptly. People mix them up.

Third, where did they work? Check all cables and connections in that area. Check the high voltage orange disconnect in the hatch area. If earlier disconnected many fail to do the final slide step.

 

Would a Toyota dealership not check this stuff? Maybe yes, maybe no, lol.

 

Just had a lady on here where the dealer missed the obvious and wanted to change a $1000 ecu. It took them two months and a little help from Priuschat to get the free repair without an ecu. Personally I don't think a paint shop can ruin a hv battery. Maybe a 12v battery.

 

That's an awful lot of codes. Several may just be spurious due to a loss of power (ie blown fuse/battery swap, etc). Since you have all the codes recorded, you can always clear them and see what comes back so you have something to focus on. As mentioned above, definitely check ALL fuses first to make sure it's not something simple.

If the P0A80, P0301, P0302 come back, I would be concerned about the p0301 and 302 first since those indicate misfires on cylinder 1 and 2. Isn't that where the famous Gen 3 (commonly the 2010 and 2011) head gasket failure occurs? I would make sure I have a handle on that before I dumped a bunch of money into an HV battery, assuming the HV battery code is real.

 

That is ridiculous. And uninformed—by Toyota's own training and repair manuals. And unprofessional. And unethical.