Prius Gen 1 Issue (2003)

I did not see a Gen 1 forum but have an issue with a Gen 1. My roommate has a Gen 1 Prius (2003) that is throwing a warning but no code. Is in the Hybrid system.



Dealer cannot find the code and wants $800 to dig through the system. That includes no repair, just going through the system. I found a hybrid shop that I could get it towed to in order to get the car looked at.

What is the best option and anyone see this and can tell me what bit might be?

Edit: I am reasonably skilled both as a backyard mechanic and with computer repair. Is there anything I should try personally as well?

 

Will it give information that the Toyota dealer does not have access to?
As I wrote, it was taken to the dealer and they could not find anything as far as code.

 

I ordered one from Amazon for $47 (about $51 with tax) but will not get until Friday. I was going to arrange to go to the hybrid shop Friday but sounds like maybe I should wait and see what I get myself? I honestly expected them to have better gear than I could get myself.

Now that I am thinking about, I had a conventional car with an issue. The people who ran the shop told me a whole bunch of stuff that was wrong. Turned out that they were blowing smoke and appear to have not actually checked anything. It was something really minor.

Edit: Have not brought it home but curious if I should pull the aux battery and take it to O'Reilly's? I thought I read that sometimes that battery going back can cause strange issues? If they did check the code, I get the feeling they checked nothing, even simple stuff.

 

Note that I can reset the trouble light with the code reader I have, they just come back almost immediately.
The Toyota dealership is not that far from where I live and I drove it there. It will still drive.
I could just drive it to an auto part store and they could check the 12 volt battery.

 

In any case it looks like the next step is to wait to get the Tech Stream, see if I see any codes, and then go from there.
If there are still no codes, maybe I can get some suggestions on stuff I can quickly check.
If I get a code, can see how serious and whether something I can do.

 

I did check the battery with the booster pack that also has a voltage monitor and got 12.6 volts. At least the battery appears good.
Got the Techsteam today late, so test it tomorrow

 

I will say it is some sketchy software.

 

Software is trash. Video is in Chinese so you cannot even tell what it going on.

Figured it out

 

Keeping getting this


Figured it out. Still a royal pain though.

 

I have codes. . . .What did the Toyota shop actually check?

 

How hard would it be for me to do that myself? Would the best bet be to watch a video on how to replace a first gen battery and clean it instead? Is the ECU you are referring to the Battery Control Module on the side of the Battery? I say a picture showing where it is. One of my roommates used to work on naval electronics so can help me with being safe with high voltage systems.