HELP - HELP !!! 2001 Toyota prius - 60k miles - P3006, C1202, C1259 & C1213

Hello,

I own this car since 2006. Prior to that It was bought new by my Grandfather in 2001. Since last december, The car had the triangle of death as well as the check engine light.

When the light came on, I took it to the Grand Island, NE toyota dealership. After more than a week they charged me $180 and told me that everything was fine. When I drove it home. The lights (Triangle and check engine) came back on. I returned the car right away, but before arriving at the dealership, the brake engine came on as well. After one more week, they told me that it needed a new ECU and REAR WHEEL HUB (Bearings). A month later and a tab of $1200 the issue was not solved. They then suggested that I needed a new battery pack (2600 + 480 installation)

The current status ==> Car still drive for 10-15min before the brake light kicks in. I have the P3006 code. the batteries show a voltage around 17V (17.37 - 17.88) for all the 38 cells.

Any options to repair my car under 1K. If not ANYbody interested in buying it as it is ???