Need new transaxle in a 2005 - questions

I have a 2005 Prius that is showing a DTC code of "P0A2B drive motor A temp sensor circuit range performance". I took it to the local dealer here and they said it needs a new trans-axle, for the low cost of $4700. I have read that a better option is to find an independent shop that will put in a used trans-axle. I looked on Car-Part.com and found several trans axles within easy driving distance for between $250 and $750. I have a few questions before I do this:

1) Are the trans-axles for the 2005 all the same or do I need to be more specific in selecting a used one. Would a trans-axle from a 2006 or after work?

2) Is there anything to look out for when buying a used trans-axle (other than high mileage). Anything I need to specifically ask the seller or to make sure is included?

3) The car started making a noticeable whine or roar when accelerating and decelerating, but otherwise is driving as normal. Is this something that could cause a sudden breakdown or will it go a little while until I can get it fixed?

Thank you for any help/Information you can give me.

 

Yea, I did and they acted like they didn't even understand what I was asking. They said they would look around for one, but that they were hard to find. I went to car-part.com and within minutes found several within easy driving distance for me to pick up.

 

Update: After calling around I found a local shop that would acquire and install an used transaxle for $2400. Later that day, the dealership called me back and said they could put in a used transaxle for $2500. I decided to go with the dealership because the price difference was negligible, they said they would give me a car while the work is being done and I assume they have access to more resource with experience than the local place. Will update again when work is done.


P.S> Was surprised that the local chain transmission places were simply uninterested in doing the work. I called 2 Cottman places and they both said they didn't really like to put in used transmission, even if they only provided a short term warranty. They also said I probably would have a hard time finding one (Wth?). I also called a Certified Transmission place and they came back with a price of $6000 to put in a re-manufactured transmission. They wouldn't put in a used one. So their price was $1300 MORE than the dealership would charge for a new transmission, and they refused to do anything else.

 

Just outside of Blue Springs

 

Update: Unfortunately I didn't see the post about the transaxle fluid until after it was gone.

The dealership did the work and returned the car to me yesterday. The description on the ticket said an electric motor in the transaxle was overheating and needed to be replaced. They found and purchased a used transaxle and put it in, taking about 2 1/2 days.

They provided a car while the work was being done The cost of the transmission and shipping was $995, the labor was $1300. After adding the transaxle seals, misc charges and tax the total was $2433. So far no issues after getting it back. The transaxle lasted 350K miles . Now on to the next item.

 

Lees Summit Toyota, off M-291