07 Prius Codes C1259 C1310 P3018

1 of the modules in block 8 is bad and you probably would need to put a significant load on it to identify which of the 2 modules in block 8 are bad. Then recondition the battery so all the modules are balanced.

If you want a cheap way out and buy you a little more time. Buy 2 good modules and replace both of them on block 8. I have 2 modules to sell if you want to take this route

Counting from the side OPPOSITE of the battery ecu and wiring, each pair of modules is 1 block. block 8 would be somewhere in the middle of the pack, modules #15 and #16

 

FYI, C1259 and C1310 are just information codes passed from the HV battery ECU to tell the other respective ECUs there is a battery problem. (This is so they can modify their behavior to further protect the car, driver and battery.)

At this point, buying another skid control ECU is just a waste of time and money. The real issue is the P3018, which is detailed in JC's post above. Fix this (properly) and the other two will not come back once you have fixed the P3018 and reset the codes.

 

What dolj said..... Focus on p3018.
That is the root of the problem.

If you are furious hopefully you kept that in check because they are correctly focusing on the right problem.

Do you own some diagnostic equipment like an Elm 327 Bluetooth OBDII reader or techstream so you can watch/record the data live? If so you should easily be able to see data that will confirm the same diagnosis that the mechanic gave you.

Feel free to call me if you have any questions.

 

Well put. As dolj said, the C1259 and C1310 are both repeater codes in other ECUs that simply echo a problem indication from the HV system.

That is covered in the repair manual. Generally, there seem to be two broad approaches to working with a shop mechanic: (a) trust the mechanic, or (b) engage in dialectic with the mechanic.

Shop mechanics generally prefer (a), and can be a bit acerbic about (b):


Me, I think (b) can be valuable, if the mechanic is open to it, and if you've made the effort to go to the source for your information, first. Definitely before getting furious with the mechanic.

-Chap

 

It is not recommended, you are better to replace all the Gen 2 modules with the Gen 3 modules.

There is more to it than just resting voltage. You really need to look for modules that charge and discharge at the same rate as the remaining existing modules. Unless. of course, you really like going in every couple of months to "whack-a-mole".

 

Hi everyone i got Toyota prius got problems with it red triangle light on vsc and abs light on hybrid batry get hot investor got hot car gos on limp mod i don't know can anyone one had symptoms like this any one help me iam bit worried

 

You will have to have the car diagnosed.
You can do it yourself if you purchase or own the right tools. Else you will have to take it somewhere
With an Android phone, an ELM 327 Bluetooth OBDII adaptor, and the Torque Pro app , you may be able to do your own diagnosis.

It could be one of several problems. But it is hard to guess from here.
Low oil, inverter pump, bad battery, bad inverter, low 12v battery are just some of the random options.