Errors After Inverter control board replacement and problems with re-flash.

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Arlin

Well-known member
Joined
May 14, 2024
Messages
51
Location
British columbia
Hi, I have the following errors.

BMS_f062 Contractor power supply
GTW_f085 Powertrain Firmware Version
GTW_d001 Powertrain Firmware Version

Now I got a parts motor (Tesla P85+ Sport) drive unit and took the inverter control board out. Hoping it can work in the rave 4 EV inverter as I damaged the Rav 4 EV inverter control board.

Now I see I can re-flash it. But the instructions are not clear. I have tried.... But the program just does nothing when I click the "firmware download to vehicle"

I think its because the contactors are not staying closed? When I turn the power on the contactors make their noise but I think its them closing then opening again right away. Would this make it NOT accept a firmware re-flash?

Am I wrong to think the sport control board would work to run this once its flashed?

I should add I got the Tesla TPD 1.1.46 But I don't have Toyota techstream.
 
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Welcome!
You are operating in territory where few have gone. Only alflash and QC Charge (who no longer is on this forum, he now hides from his past in a private/gated FB group) could answer your questions from experience.

I believe that alflash ran into a situation with an OBC from a Model S that could not be flashed to the RAV4 EV software, due to the installed revision being higher than the Gateway would accommodate, and there is no provision for flashing older/backlevel firmware. If that's the case, your choices would be to locate a salvage inverter control board from a RAV4 EV, or do some hacking to see if the firmware's hardware can be swapped -- this kind of thing is done, but I've not heard of it being done on this specific board, and it requires a specific skillset.

The MB B250e version of the LDU has an additional PCB, that the Model S/X of the same era does not. I do not know if this is the case with our RAV4 EVs.

I expect that HV would not be active during a firmware update, but then I've never done one ;)

Perhaps alflash can contribute from his experience.
 
Arlin said:
Arlin said:
...
GTW_f085 Powertrain Firmware Version
GTW_d001 Powertrain Firmware Version
...
Click to expand...
Click to expand...

Please, if available, show a screenshot of the window with such Hardware Config data
https://alflash.com.ua/2019/to_rav4ev/after_reflash.png
after_reflash.png

It's strange that the Tesla system doesn't have GTW_f014 and/or GTW_ f054 codes...
It might be useful to look at UPDATE.log
Techstream software is practically USELESS in case of malfunctions of Tesla system.


asavage said:
...
Perhaps alflash can contribute from his experience.
Click to expand...
Yes, indeed, after installing the TESLA-SX-ENGINE-MOTOR-CONTROL-MODULE-UNIT-New-1013416-00-A-REV03 purchased on eBay, the inverter was flashed (using v.1.1.42)
 
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alflash said:
Please, if available, show a screenshot of the window with such Hardware Config data
https://alflash.com.ua/2019/to_rav4ev/after_reflash.png
after_reflash.png

It's strange that the Tesla system doesn't have GTW_f014 and/or GTW_ f054 codes...
It might be useful to look at UPDATE.log
Techstream software is practically USELESS in case of malfunctions of Tesla system.



Yes, indeed, after installing the TESLA-SX-ENGINE-MOTOR-CONTROL-MODULE-UNIT-New-1013416-00-A-REV03 purchased on eBay, the inverter was flashed (using v.1.1.42)
Click to expand...

Hi Alflash, I believe you and I have been talking on Youtube a bit in the comments.
I can't find the menu for "Hardware configuration" Here is what my TPD looks like. Let me know what menu it is in or if I need to download TPD again or something. Thank you.
1715778066974.png

1715778091154.png

1715778121379.png
 
OK But now is the question. How do I get it to reprogram the drive unit? The DC-DC is not charging the battery when I try to push the on button 2 times. What is does is turns the contactors on then off again. So... Does it need the DC-DC running? Do I need a super strong and new 12v battery? Can I have a charger on the 12v battery to keep it full while doing this? There seems to be a reason it will not accept the " Firmware Download to Vehicle" Button and it just turns grey and sits there doing nothing when I click it.
 
The Toyota service manual specifies to always support the 12v system with their GR8 (00002-MCGR8) device while programming. It's a fancy battery charger, yes.

From T-SB-0043-13:

1715791372250.png
That particular TSB is very Techstream-centric, but it eventually has you fire up TPD anyway to do the actual flashing, so . . . it's still applicable.

Another resource is T-SB-0010-14, '12-'14 RAV4 EV : EV System Software Update
 
Last edited:
asavage said:
The Toyota service manual specifies to always support the 12v system with their GRxxxxx device while programming. It's a fancy battery charger, yes.
Click to expand...
Thank you. I did have a Battery charger on it. But maybe its not strong enough. I will Put something with more power on it and try again.
 
Arlin said:
OK But now is the question. How do I get it to reprogram the drive unit? The DC-DC is not charging the battery when I try to push the on button 2 times. What is does is turns the contactors on then off again. So... Does it need the DC-DC running? Do I need a super strong and new 12v battery? Can I have a charger on the 12v battery to keep it full while doing this? There seems to be a reason it will not accept the " Firmware Download to Vehicle" Button and it just turns grey and sits there doing nothing when I click it.
Click to expand...
Show a screenshot of the Firmware downlod to Vehicle menu before starting this function. Those, does the program see firmware-release-1.3.101 file it needs?

Note.
Toyota recommends/insists that when reprogramming it is imperative that the voltage be at least 13.5 volts.
https://alflash.com.ua/2019/to_rav4ev/note_reflash.png
note_reflash.png
https://alflash.com.ua/2019/to_rav4ev/note_reflash.png
 
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alflash said:
Show a screenshot of the Firmware downlod to Vehicle menu before starting this function. Those. Does the program see the file it needs?

Note.
Toyota recommends/insists that when reprogramming it is imperative that the voltage be at least 13.5 volts.
https://alflash.com.ua/2019/to_rav4ev/note_reflash.png
note_reflash.png
https://alflash.com.ua/2019/to_rav4ev/note_reflash.png
Click to expand...
I have lots of Power supplies. I will get one hooked up that should keep it at 13.5

As for the program seeing the file it needs. Where do I download the file or does it come with the TPD software? How do I know if it sees the file?
 
This is what is looks like After I click the play button. And it looks the same before I click the play button except the play button is blue before I click it. So to be clear when I first open the Firmware Download to Vehicle screen. The play button is blue. Then when I click the play button it turns grey.

But I will say they 12v battery was slowly dropping to 12.7-12.5v with the 10a charger on it. So I will make sure I get a PSU to hold it at 13.5v.

1715790123732.png
 
Arlin said:
As for the program seeing the file it needs. Where do I download the file or does it come with the TPD software? How do I know if it sees the file?
Click to expand...
Remember: TPD, when used legally, connects to Toyota for firmware files.

Your version may not be legal, and you have what you have. Or, you may need to pay Toyota USD$25 for a 48-hour subscription, in order to allow TPD to obtain files. IDK, I've never explored this, as I haven't had to flash any old modules, and there are no generic firmware updates for many years.
 
Arlin said:
This is what is looks like After I click the play button. And it looks the same before I click the play button except the play button is blue before I click it. So to be clear when I first open the Firmware Download to Vehicle screen. The play button is blue. Then when I click the play button it turns grey.

But I will say they 12v battery was slowly dropping to 12.7-12.5v with the 10a charger on it. So I will make sure I get a PSU to hold it at 13.5v.

View attachment 436
Click to expand...
Is this screenshot BEFORE starting the procedure???
 
Arlin said:
After. (Before has a Blue Play button) I will take a screenshot when I get home from work.
Click to expand...
The program does not have access to the calibration file...
Take a look at 37 sec

Let me know if you need the RAV4EV Firmware file.

Note. Access to diagnostic programs and new calibration files is called "Professional" and costs $70.00
https://techinfo.snapon.com/TIS/Register.aspx

Update. You can see such screen on your laptop?
https://alflash.com.ua/2019/to_rav4ev/firmware.jpg
firmware.jpg
 
Last edited:
alflash said:
The program does not have access to the calibration file...
Take a look at 37 sec

Let me know if you need the RAV4EV Firmware file.

Note. Access to diagnostic programs and new calibration files is called "Professional" and costs $70.00
https://techinfo.snapon.com/TIS/Register.aspx
Click to expand...

OK Yes I will need the RAV4EV Firmware file.

Also do I need the $70 Professional" version?
 
Arlin said:
OK Yes I will need the RAV4EV Firmware file.
Also do I need the $70 Professional" version?
Click to expand...
НOT need.
alflash said:
The program does not have access to the calibration file...
Take a look at 37 sec
...
Let me know if you need the RAV4EV Firmware file.
...
Click to expand...
https://alflash.com.ua/2019/to_rav4ev/firmware.jpg

Update.
Using, for example, AnyDesk software, we can try to make a reflash in “four hands” and “four eyes” :)
This and firmware file "for free"
 
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