My 2005 Prius will not crank. No light on the dashboard, no display, no radio and when I press the start button the check engine flashes twice. I saw on youtube where someone recommends replacing the motherboard on the instrument cluster, so I swap the complete dashboard with my 2004 Prius. It didn't solve the problem. I have replaced the 12V battery with a new one from the dealer @ 12.68V I can not get any code because for lack of power I have checked the fuses and relays Somebody, please help. Thank You
Did you try putting the key fob into the key slot? I just recently found the battery went dead on my remote key fob and was flashing a yellow car symbol with a key on it (saying that it couldn't find a key in the car) when I tried to start. Stuck the fob in the slot, and it started right up. Posted via the PriusChat mobile app.
Although it's difficult to troubleshoot long distance, the first thing I would do is check to see if you have 12.x volts at the jump terminal at the engine compartment fuse box. The heavy cable from the 12v battery (+) post connects there. That is the distribution point for all 12v.
the orange safety plug is also a fuse.. might want to check it or swap it with your other car.. was the car operating normally before this? parked outside? might have a rodent eating your wires always good to clean the ground from the 12 volt battery to the body good luck
might want to read through this post, seems to be a similar problem Prius won't start and check engine light appears | PriusChat
History: Milage 145,000 I owned the car for 3 years. Reconditioned the Hybrid Battery 1 year ago. Did it myself and balanced it. The vehicle was running well with no code before this. What's Done: I checked the 12-volt battery in the back with backlash open 12.80. it's a new one from Toyota dealer, checked the front positive with the ground to the body 12.80 but steady at 12.79. I checked all fuses and they are OK. I just found the Problem, talking Fuse, the Glass Fuse DC/DC 100A is broken. I am happy I went back and found it. Can somebody tell me how to Fix it? Regards.
