Battery and warning lights

2007 Prius red triangle and brake system warning light came on. Hybrid battery fan as well. Toyota dealership confirmed hybrid battery failure and offered to replace. No thank you. I tested 12 volt battery which is 7 years old and found it was bad also. I replaced the 12 volt battery myself and plan on having the hybrid battery restored at a local shop. The problem is that after replacing the 12 volt battery all the warning lights came on and the car won’t start. The two codes that I have been able to get from my Autel code reader are C1259 & C1310. These seem to be common and I can’t find anything that suggests that they would prevent the car from starting? If anyone can offer me some insight I would appreciate it. This is my first time working on my wife’s old Prius. It has been reliable for 170,000 miles.

 

Ok will do. Thank you.

 

Thanks for the reply. I tried this carefully but on the second push of the power button the power and all lights go off...

 

I will try this. Thank you.

 

Hi there. I have tried everything that has been suggested including cleaning the throttle body and butterfly valve. There was a small amount of oil inside of the throttle body. I drained some oil as I think it was over filled slightly. I don’t think that is in play here because the car ran fine until I changed the 12v battery. That is fine considering that the hybrid battery is dying and the battery fan was on along with the red triangle and the brake system warning light. What does hooking up with you regarding diagnostics look like? I am ignorant in this instance but very capable once I know what I need to fix. I don’t want to tow the car to a shop and pay for diagnostics.

 

I did test the voltage at the jump points under the hood and it is good. My wife took the car to the dealership and they sent her home with an estimate for the hybrid battery and in-line filter whatever that is. No codes on the estimate which is what frustrated me for $143.00. Anyway, I am handy with automotive repair but plan on having the battery restored in a local shop but was not planning on the car dying in the driveway. The codes I got from my Autel scanner were C1259 & C1310. Those seem to have been cleared as they no longer show up after I erased them. I am talking with another member about helping with the diagnostics and have been researching my options for getting the equipment I need to do this myself. I don’t want to buy something that doesn’t work.