P3000 P3012

Hi all!

I'm a Prius enthusiast and owner since 2006 of a 2005 Prius. Unfortunately, after 20 years, my Prius decided to start giving some troubles in the last months... below what happened.

Nov XX
After starting my Prius, all of a sudden I get multiple warning lights on dashboard. Toyota repair shop says it needs HEV battery replacement. Although it's a gamble for such an old car, I'm not ready to leave my Prius behind and decide to give it a try (very expensive). The car goes into protection / limited to ~ 40 km/h while driving it to the shop.

Dec 22
Toyota repair shop returns "fixed" car after replacing the whole HEV battery (took a while, apparently it's hard to find a new battery for such an old Prius, plus 1 out of 4 "connectors(?)" not found so using an old one? Not transparent communication).

Dec 22-27
Car works.

Dec 27

• As in the beginning: multiple warning lights on dashboard after starting the car, which stay on.

• Following error codes from Car Scanner (didn't check in the beginning as I just bought an OBD dongle).

• The fan in the rear seats (I think associated to the HEV battery actively hearable).

Dec 29
I'm going to bring the car back to the Toyota shop as it has still the warranty of their intervention. But I start to lose faith. I'm asking you guys if anyone has any insight on whether the car is still fixable, what the culprit could be given that the battery is supposedly "new" and what to tell Toyota mechanics to check to make sure this doesn't happen again.

Thanks a lot!