Prius with a few codes: need advice

I have a friend who is not mechanically incline at all and he was having some trouble with his 2001 prius with 167000k.

The parking break would randomly come on whole driving down the road and he would have to pull over and turn the car off and back on to drive again.. It's getting low to average gas mileage around 30 mpg. It recently had the cat replaced with a standard non prius cat, and and apparently the hv battery was replaced or refurbished at around 90k. The triangle light came on but the car still drives fine. They took it in to the dealer and the dealer said it needs a new battery for $4000.

The dealer offered them 300 to trade it in. I told them that I could part it out and get more then that so they GAVE it to me because they don't even own a single tool.

The codes the dealer gave were
P3000 Battery control system
P3006 levels unusually different
P3022 block 12 becomes weak
P0420 cat threshold something

From reading on here for a while I understand that the driving and braking issues are most likely related to the failing hv battery, correct?

I also understand that block 12 being bad is just one of 38 cells that is bad?

I have never worked on a prius, however I am very mechanically inclined, and do have some experience working with high voltages, so I do understand the risks.

I guess my options are:
1. Part out the remaining good cells, and and take the body to a scrap yard and get a few hundred bucks for scrap metal.

2. Purchase a rebuilt battery from a place like reinvolt and hope to sell it for more than the cost of a new battery.

3. Buy an individual charged cell off of eBay, replace it and try to sell it.

4. Try to sell it as is to someone who would be willing to fix it. How much would a good prius with a failing battery sell for anyways?

I don't need or want the car to drive myself, I just want to make money off of it in an honest way, (I plan on splitting anything net off of the car with the person who gave it to me.)

What would you do?
Thanks in advance.

Thanks

 

I'm located in Wisconsin.

 

Yeah but if I could replace just the one bad cell for 50 then couldn't I sell it for much more...

 

167000 miles.. Keep in mind it does still run, and I haven't put a penny into it. So it doesn't seem to be to high of a risk to attempt to repair the battery... If I get half way through and I can't figure it out, then I'd just part it out I guess..

If I do sell it I would be as transparent and honest as I could be about it... Like you mentioned they sell on ebay with bad batteries...

So the real options are sell as is... Or try to repair the battery and sell a little more..

 

I was already planning on getting a repair manual for the car, and a scan tool for it if I decide to begin to work on it. Luckily I live less than a mile from a prius certified Toyota dealer, but I would prefer not to have to use them.

 

would I be able to use the torque app along with a bluetooth obb plug to gather the same information?

 

hmm...I'd like that as it seems more useful and user friendly than a scanguage 2.

Bob, would you recommend using a scanguage as opposed to the other options you listed earlier. Or a better questions is, based on what I'm planning on doing do you believe it would be adequate?

My plan, after driving the car for a day is to do a scaled down version of what you said earlier, Bob.

I'm planning on rebuilding the battery, and drive it with either a scanguage, or the torque app running (if that gets up and running) for a few months to make sure no other issues jump out right away.

I am very knowledgeable when it comes to traditional gas/diesel powered cars, so I am currently enjoying learning about a different type of car. I am extremely grateful for your input and knowledge, and I will keep this updated with any progress.