Unlocking the power/torque of Prius gen 3 drive train?

Topics concerning the Toyota and Lexus inverter drop in boards
User avatar
tom91
Posts: 2962
Joined: Fri Mar 01, 2019 9:15 pm
Location: Bicester, Oxfordshire
Has thanked: 328 times
Been thanked: 847 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by tom91 »

Please provide the param file for V2.3

What gearstick are you using?
Creator of SimpBMS
Founder Volt Influx https://www.voltinflux.com/
Webstore: https://citini.com/
Landsi
Posts: 18
Joined: Sun Jan 28, 2024 7:10 pm
Has thanked: 15 times
Been thanked: 7 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by Landsi »

Did you re-select and save your inverter?
https://github.com/damienmaguire/Stm32- ... /tag/2.22a
Plan to build someday soon<TM>:

VW T3 Bus
Leaf Motor Stack incl Transaxle
Brat Industries VW Driveshaft Adapters
Model 3 55kwh Battery / MEB 58kwh Battery
Foccci CCS
Zombieverter VCU
Ghia66
Posts: 170
Joined: Wed Apr 10, 2024 6:50 pm
Location: Ireland
Has thanked: 749 times
Been thanked: 65 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by Ghia66 »

tom91 wrote: Mon Dec 29, 2025 4:58 pm Please provide the param file for V2.3
Will do
What gearstick are you using?
Simple 3 way switch
IMG_0554.jpeg
IMG_0559.jpeg
Ghia66
Posts: 170
Joined: Wed Apr 10, 2024 6:50 pm
Location: Ireland
Has thanked: 749 times
Been thanked: 65 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by Ghia66 »

Landsi wrote: Mon Dec 29, 2025 6:00 pm Did you re-select and save your inverter?
https://github.com/damienmaguire/Stm32- ... /tag/2.22a
Thanks
I didn’t re select the Prius as it came across when I updated the parameters from my saved 2.15A parameters.
The only thing that I could tell that didn’t come over was the BMW S box.
User avatar
tom91
Posts: 2962
Joined: Fri Mar 01, 2019 9:15 pm
Location: Bicester, Oxfordshire
Has thanked: 328 times
Been thanked: 847 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by tom91 »

Post your v2.30A param download.
Creator of SimpBMS
Founder Volt Influx https://www.voltinflux.com/
Webstore: https://citini.com/
Ghia66
Posts: 170
Joined: Wed Apr 10, 2024 6:50 pm
Location: Ireland
Has thanked: 749 times
Been thanked: 65 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by Ghia66 »

tom91 wrote: Tue Dec 30, 2025 9:41 am Post your v2.30A param download.
params.json
(2.14 KiB) Downloaded 4 times
Couldn’t find MG1 or MG2 available for selection
Ghia66
Posts: 170
Joined: Wed Apr 10, 2024 6:50 pm
Location: Ireland
Has thanked: 749 times
Been thanked: 65 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by Ghia66 »

tom91 wrote: Mon Dec 29, 2025 3:46 pm So even after a 12V power cycle it does not work.

Can you please try a release that is older? like V2.22A or 2.20A It is possible a change I made for the testing Greg was doing in his VW Rabbit causes issues for your setup.

I installed 2.20A and sadly it still doesn't move.
Attached is the log and 2.20A parameters
log (1).csv
(1.66 KiB) Downloaded 3 times
Thanks


params (1).json
(2.15 KiB) Downloaded 2 times
[attachment=1]
User avatar
tom91
Posts: 2962
Joined: Fri Mar 01, 2019 9:15 pm
Location: Bicester, Oxfordshire
Has thanked: 328 times
Been thanked: 847 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by tom91 »

If you flash it back to V2.15A you get drive again? Surprised it just refuses to work.

Your V2.20a log does not show Potnom or Torque, this stop it from driving.

Will need to work out what is different if it works on V2.15A makes it work again.
Creator of SimpBMS
Founder Volt Influx https://www.voltinflux.com/
Webstore: https://citini.com/
Ghia66
Posts: 170
Joined: Wed Apr 10, 2024 6:50 pm
Location: Ireland
Has thanked: 749 times
Been thanked: 65 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by Ghia66 »

Thanks Tom, I will go to 2.15A and see what happens
Ghia66
Posts: 170
Joined: Wed Apr 10, 2024 6:50 pm
Location: Ireland
Has thanked: 749 times
Been thanked: 65 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by Ghia66 »

tom91 wrote: Tue Dec 30, 2025 1:04 pm If you flash it back to V2.15A you get drive again? Surprised it just refuses to work.

Your V2.20a log does not show Potnom or Torque, this stop it from driving.

Will need to work out what is different if it works on V2.15A makes it work again.
Sorry Tom, how do I flash it back to 2.15A?
I tried “updating” it to 2.15A and it remained on 2.20A
User avatar
tom91
Posts: 2962
Joined: Fri Mar 01, 2019 9:15 pm
Location: Bicester, Oxfordshire
Has thanked: 328 times
Been thanked: 847 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by tom91 »

Creator of SimpBMS
Founder Volt Influx https://www.voltinflux.com/
Webstore: https://citini.com/
Ghia66
Posts: 170
Joined: Wed Apr 10, 2024 6:50 pm
Location: Ireland
Has thanked: 749 times
Been thanked: 65 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by Ghia66 »

Thanks so much.

This file then 😊
IMG_2224.jpeg
Ghia66
Posts: 170
Joined: Wed Apr 10, 2024 6:50 pm
Location: Ireland
Has thanked: 749 times
Been thanked: 65 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by Ghia66 »

tom91 wrote: Wed Dec 31, 2025 10:14 am Yes update it to the https://github.com/damienmaguire/Stm32- ... /tag/2.15A

Okay, so I downloaded the 2.15A bin file as linked and upgraded the Zombie.

Unfortunately the file seems to be 2.20A on spot values even after numerous Zombie reboots and refreshes… is it possible to be the wrong file? 🤞
Ghia66
Posts: 170
Joined: Wed Apr 10, 2024 6:50 pm
Location: Ireland
Has thanked: 749 times
Been thanked: 65 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by Ghia66 »

So back to 2.15A with the help of Hakan and his soldering/ ST link magic. The car is back up and running after loading up the previous parameters.

Keen to try whatever is required to progress the Prius 3 experience
User avatar
tom91
Posts: 2962
Joined: Fri Mar 01, 2019 9:15 pm
Location: Bicester, Oxfordshire
Has thanked: 328 times
Been thanked: 847 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by tom91 »

There must be something on your setup causing problems. Damien utilizes a Gen 3 Prius on the bench for zombie release testing.

Not the best to just go at it if it means risking not being able to move the car though.
Creator of SimpBMS
Founder Volt Influx https://www.voltinflux.com/
Webstore: https://citini.com/
Ghia66
Posts: 170
Joined: Wed Apr 10, 2024 6:50 pm
Location: Ireland
Has thanked: 749 times
Been thanked: 65 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by Ghia66 »

Thanks Tom and Damien.

I really would like to try 2.20A again and see if we can get the car rolling with all the great features.

I rewatched Damien’s video on 2.20A and also Greg’s latest one and think that maybe I could have the wrong dirmode setting 🤞

The Ghia isn’t a daily just an exciting rolling experiment so I am going for a 2.15A drive with logs and then upgrade to 2.20A 🙂
Ghia66
Posts: 170
Joined: Wed Apr 10, 2024 6:50 pm
Location: Ireland
Has thanked: 749 times
Been thanked: 65 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by Ghia66 »

log (1).csv
(5.39 KiB) Downloaded 4 times
Well just back from an enjoyable drive.
The car is such fun!
Ghia66
Posts: 170
Joined: Wed Apr 10, 2024 6:50 pm
Location: Ireland
Has thanked: 749 times
Been thanked: 65 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by Ghia66 »

Well 2.20A software is loaded and I have uploaded my 2.15A parameters.

Changed;
Transmission to manual
Shunt type to Sbox
Dir mode to switch

Looks promising but car is not moving!
params 2.json
(2.14 KiB) Downloaded 2 times
log (1) 2.csv
(3.91 KiB) Downloaded 3 times
I am sure that there is something obvious that I am missing!
User avatar
tom91
Posts: 2962
Joined: Fri Mar 01, 2019 9:15 pm
Location: Bicester, Oxfordshire
Has thanked: 328 times
Been thanked: 847 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by tom91 »

Change inverter and change it back again. Can you also please post your inverter serial number/part number
Creator of SimpBMS
Founder Volt Influx https://www.voltinflux.com/
Webstore: https://citini.com/
Ghia66
Posts: 170
Joined: Wed Apr 10, 2024 6:50 pm
Location: Ireland
Has thanked: 749 times
Been thanked: 65 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by Ghia66 »

Thanks Tom, will do tomorrow
Ghia66
Posts: 170
Joined: Wed Apr 10, 2024 6:50 pm
Location: Ireland
Has thanked: 749 times
Been thanked: 65 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by Ghia66 »

tom91 wrote: Tue Jan 06, 2026 6:13 pm Change inverter and change it back again. Can you also please post your inverter serial number/part number
IMG_2368.jpeg

Changed the inverter from Prius 3 to none and back to Prius 3 and powered down/up the Zombie, unfortunately the car didn’t move.

Thanks
User avatar
tom91
Posts: 2962
Joined: Fri Mar 01, 2019 9:15 pm
Location: Bicester, Oxfordshire
Has thanked: 328 times
Been thanked: 847 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by tom91 »

Did you provide an over view of your wiring? Just want to check its all been done right. Mainly interested in the grounds and 12V supplies and relays.
Creator of SimpBMS
Founder Volt Influx https://www.voltinflux.com/
Webstore: https://citini.com/
Ghia66
Posts: 170
Joined: Wed Apr 10, 2024 6:50 pm
Location: Ireland
Has thanked: 749 times
Been thanked: 65 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by Ghia66 »

tom91 wrote: Wed Jan 07, 2026 4:35 pm Did you provide an over view of your wiring? Just want to check its all been done right. Mainly interested in the grounds and 12V supplies and relays.
I don’t have a wiring diagram but I will take some detailed photos tomorrow to show the setup.
I slavishly followed Greg’s Rabbit wiring etc and because of having worked on quite a lot of VWs and Subarus I made sure that there is an abundance of grounds.
Ghia66
Posts: 170
Joined: Wed Apr 10, 2024 6:50 pm
Location: Ireland
Has thanked: 749 times
Been thanked: 65 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by Ghia66 »

12volt wiring layout and grounds
IMG_2392.jpeg
IMG_2385.jpeg
IMG_2386.jpeg
Attachments
IMG_2388.jpeg
IMG_2389.jpeg
IMG_2390.jpeg
User avatar
tom91
Posts: 2962
Joined: Fri Mar 01, 2019 9:15 pm
Location: Bicester, Oxfordshire
Has thanked: 328 times
Been thanked: 847 times

Re: Unlocking the power/torque of Prius gen 3 drive train?

Post by tom91 »

Is all the 12V to the inverter via that relay?

If the issues remains like it does need to confirm what inverter Greg has in his rabbit and what firmware was used as a base for testing on it (yes I did write it but its a while ago).
Creator of SimpBMS
Founder Volt Influx https://www.voltinflux.com/
Webstore: https://citini.com/
Post Reply