Hi I have a friend with a Gen 1 that won't start after sitting. ECU considers the pack disconnected. 12v brand new. What is the easiest way to get it going without removing the pack? We were joking about a "Prius jump" using my pack but that just sounds dangerous. High voltage and high amps. Could this be done with a simple current limiter?
The dealer needs to order a special charger as even they do not keep one on hand. I have seen someone document on Prius Chat a method that entails disassembling the battery pack and charging modules one by one. Good Luck and don't fry yourself.
How was this diagnosed? Does the battery controller respond with anything? We have seen various cases of interlock failures. Also ECU/immobilized issues. But the first thing I would want to understand is if the battery ECU is responding. Welcome back! Bob Wilson