I need help. I bought a used Prius 2008 back in December. Two days ago the Prius wouldn't start, just completely dead. We got someone to come and jump-start the car but immediately when the jumper cables were taken off, the Prius died again and the big red exclamation point flashed. I don't trust the guy jump-starting the car because he was a creep to me, but he said it could be something wrong with the hybrid battery. I understand that there are two different batteries in the Prius, but wouldn't the car still work even if the hybrid battery was dead? The previous owner said they replaced the hybrid battery recently. Maybe it is the 12v battery or could be something else completely? Please let me know your thoughts, thank you!