Please read and help!

If it's a bad module, then it's not bad enough that it's resting voltage is much different than the others. But if you watch the module voltage drop for 2 minutes when hooking up a regular, non-LED headlight bulb, basically 12v 55 watt bulb, the bad module will lose voltage much faster than the other modules.

Another good test is getting a charger suitable to charge up a single module, which are the types of chargers they sell for remote control cars, boats, etc.. This is the one I've used: SkyRC iMAX B6DC V2 Battery Balance Charger Discharger Dual Power DC/DC LiPo pb | eBay You use that charger on the NiMH setting to charge up all 20 modules to full charge, then wait three days or longer while they all slowly discharge and the weakest module will lose the most voltage.

But before you do any of that, you want to find out what the subcodes are for the P0a80 error code, which will point more directly to the problem. This is most easily done via the Dr. Prius app and an inexpensive bluetooth OBD2 reader. Here's the buyer's guide for that: Hybrid battery diagnostic and repair tool for Toyota and Lexus

 

Welcome!

Sorry to hear the troubles!

You got off to a fast start with the work.
You may have had luck contacting Toyota to see if a good will was able to be reached since
you are just over the mileage of 100k for the warranty.
I am not fully sure, but maybe warranty is now void from the work done?

However, @PriusCamper has the xp and knowledge along with others here to get you were you need to be
good luck!

 

If the dealership thought they could make a fortune charging/robbing Toyota for hybrid battery replacement under warranty they would of done so... And sometimes you can argue and get Toyota Customer Service to authorize the dealer to do it. There's no seal that voids warranty if you take the pack apart. So as long as you put it back together and nothing looks out of the ordinary you can still pursue that option.

 

That is a bit early to have the HV battery pack fail.

Even if "reconditioning" appears to do some good, it won't last long.

Have you had the 12 V battery tested (or replaced lately)?

Have you personally contacted the company that sold the "extended warranty" ?
If not, you should.

Let's hope that it works fine again after you put it back in.

I don't suppose that you have easy access to more than one dealer there ?

 

Owner reports of Prius C packs failing have been posted here for years. OP's pack could be as much as 8 calendar years old now and is over the 100k mark so although it's in the early group it's certainly not unheard of.

My guess is the pack is weak but can still be easily revived with good, known practices of module testing/replacement and grid charging/maintaining and get several more years out of it.

If Hawaii was a CARB state then things would be different...... maybe try for a goodwill warranty also.

 

The Prius C has a shorter warranty, evenn for CARB states. CA has a 8 year/100k warranty on the C

 

I should have remembered as I actually looked that info up during one of those threads from years ago I just mentioned in my previous post. CRS* disease strikes again!





* Urban Dictionary: CRS disease

 

Isn't that kinda high too? $2500 is more the norm? Or Hawaii, different dealership network, they jack up the price?

 

It should be cheaper since Hawaii is much closer to Japan...

 

You could try contacting the dealer you went to, and ask if Toyota can help you with it since it is just over
the mileage for the warranty, and still within the time frame.
If they dont seem too convincing that they want to help, you can contact Toyota directly.
Not sure if they have a direct number, but this number is a good place to start.
Contact Us | Contact Toyota

 

If it's not already too late, also check all the voltage sensor wires, their connections to the battery modules, and the connector where they all plug in to the battery ECU (Electronic Control Unit). There have been cases where the battery cells were good, but the ECU was getting false voltage measurements. maybe also check the temperature sensors.

 

Hawaii has a company that has a monopoly, aka SERVCO. Everything is expensive there to boot. Maybe try Amayama. (I never tried looking up a battery there, but they sure shipped me a iQ rear axle)!

Posted via the PriusChat mobile app.

 

Correct!