All lights on, no DTCs, no READY

Hi all, trying to figure out what is going on with a friends gen3 Prius. Would not start this morning, all the dash lights are on (at least I think this is all of them):




It does not show READY and will not shift out of PARK.

I connected techstream (v15 which is VERY old, predates the gen3). Ran the health check and it show no DTCs except an old ("history") B2325 which from what I read has to do with window motors and would not stop the car from running.





Any ideas where to start with this?

 

Yeah I was very surprised that with all the warning lights there were no codes. I am using a cheap OBD2 to USB cable which I have used on many Prius cars with no problem. On this car it behaves normally, flashes green as data is transferred, no com errors reported by techstream. It read the car VIN number and a single the old (history) DTC so there does not seem to be any communication issues. The health check took a while as it walked through all the systems as expected, USB adapter flashing green, etc.

Since it took all day for my post to be moderator-approved I did some more reading. This Prius model has a 'low aux battery' sensor and warning message which should appear if the 12v battery is low. That dashboard message never appeared, but I went ahead and checked the 12v battery levels at the jump point in the fuse box. With the car off it was reading ~10v, with the car ON and headlights ON, about 8.2v.

I will pickup a new battery and install it today (in 30 degree weather, yea) and report back on results. I don't understand why the 'low aux battery' warning is not displaying, that is the whole point of it, right?

 

Yup, after battery replaced it turned on, took a minute to sort out and turn off all the dash lights. Engine started and everything running normally. Good idea to re-scan all the ECUs now just to see if anything else is going on..

Thanks!