Not going into gear, what is next?

12.2 is kinda low, get a free load test from an auto parts store

 

After sitting for so long, there will be one or more modules in the HV battery that may need replacing.

 

Ideally after sitting a long time you're going to want to trickle charge both the 12v and the high voltage battery. The 12v trickle charger costs less than $10 at a Harbor Freight type store and if battery can't hold a charge at 12.8v when car is off, it may be time to replace it. The Hybrid battery trickle charger is much more expensive. But the person on your previous thread who asked you where in your state you lived also lives in your state @TMR-JWAP and is one of the most skilled repair people among us and could assist if you contact him. Learn more about trickle charging high voltage battery pack here: FAQ

 

12.2 volts after a charge is death. It should be at least 12.6 your 12.2 means the battery is not capable of holding a charge or not capable of charging to full capacity because it is sulphated and with a load on it probably goes to 10.5 volts. I would guess its been jumped a few times and was discharged at some point to zero volts which is really really hard on a 12 volt battery.

Just charging a suspect battery and not seeing what it does under even a minor load is meaningless which is exactly what we see alot with the hybrid battery DIY repairs. Lots of nubes just charge up the hybrid battery modules and measure them and they look ok so they think cool its all good.
Soon after installation of there "rebuilt" battery it throws the RTOD again and there perplexed.

Battery 101.

Here's a minor load:

With car off measure voltage at front jump point. Do not ever measure battery voltage at the battery itself that is meaningless it only matters what the voltage looks like on your dc volt meter at the front black fuse box input which is the front jump point. The front jump bolt is bolting down the main power cable from the battery after it goes through a 100 amp fuse in the black plastic assy that's bolted to the top of the pos post of the battery..

Then with car STILL OFF turn on headlights in high beam for 5 minutes. Shut the high beams off after 5 let it sit a minute then with car STILL OFF measure dc again at front JP bolt. Your car will fail that test big time.

A healthy battery will not drop 1 volt on this very minor load test.

 

Amazing such a great response isn't shared more often... Will share this with battery issue posts in the future. Sums it all up quite well.

 

Find out what voltage the HV is reading.
It may be too low to start the car.

 

Go to the energy monitor screen if its sitting on the last bar I would almost bet the HV is drained especially as long as it's been sitting. Green-optimum
Blue- sufficient
Purple- lower parameters of voltage
Last purple line- on its last leg for starting

You really need to check the voltage on the HV usually if the 12volt is the issue it wont even go into ready mode.
If you cant jump the 12volt off with another vehicle using the jump block under the hood with it in ready mode and it attempt to start the HV battery is so drained it cannot spin the motor over for the car to crank......best of luck



Posted via the PriusChat mobile app.

 

all the best!