Android App to View / Reset SOH, Hx, Lx, Cx, etc...

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I won an AZE0 VCM and dash cluster on yahoo auctions, when it arrives I'll have a play to see how to to fix dash SOC, as well as make the GOM a bit more accurate
Hi, I'm new to this forum, I want to give all my support and thanks for all the effort you're making, I'm following your messages every day to see the progress, I have an old android at home but the operating system version is very old (4), I'll see if I can get an Android with a modern version to test your application on my Nissan Leaf Azeo year 2013. On the other hand, do you think you can program a TCU to release the firmware and change the way it receives orders? My TCU has a slot to insert any SIM card, do you think we could use a personal SIM card and send an SMS with the codes to activate heating, charging, SOC status... I can attach photos of the TCU electronic board if you want.
 
My TCU has a slot to insert any SIM card, do you think we could use a personal SIM card and send an SMS with the codes to activate heating, charging, SOC status... I can attach photos of the TCU electronic board if you want.
At first glance it seems like a good idea but it opens up the car to the world!! In terms of safety, it's like leaving the car with the windows and doors open in a difficult place. There is no security on SMS.
 
At first glance it seems like a good idea but it opens up the car to the world!! In terms of safety, it's like leaving the car with the windows and doors open in a difficult place. There is no security on SMS.
ok, I understand, but years ago some hackers already managed to send requests to the TCU without authentication, Nissan fixed the problem with an update, what I want to understand is if I can divert the requests and responses from my TCU to set up a private server in my house, can the security be compromised only for whoever unlocks the TCU and does not secure their server, after all I wouldn't be too worried about a hacker being able to turn on the air conditioning... I think it could only handle loads, air conditioning... Can they modify the firmware to divert and receive requests to a different destination? thanks.
 

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Continuing my story with lost capacity. I tried to go till full stop, SOC is dropping not according voltage. With 0% SOC and car shutting down I had still 365V, after rebooting car by disconnecting 12V I drove 20 more km, later again 10+ and so on.
So car shuts down with 0 SOC but battery is half empty. Ah value impacts SOC (that is very strange). Very strange that it shuts down with enough voltage in battery. Trying to recalculate Ah, driving to empty and charging to full.
 
Continuando con mi historia sobre la pérdida de capacidad, intenté continuar hasta detenerme por completo, pero el estado de carga no se reduce de acuerdo con el voltaje. Con un estado de carga del 0 % y el auto apagado, todavía tenía 365 V. Después de reiniciar el auto desconectando los 12 V, conduje 20 km más, luego otros 10 km más y así sucesivamente.
Entonces, el auto se apaga con 0 SOC pero la batería está medio vacía. El valor Ah afecta el SOC (eso es muy extraño). Es muy extraño que se apague con suficiente voltaje en la batería. Estoy tratando de recalcular Ah, conduciendo hasta quedar vacío y cargando hasta quedar lleno.
Gracias por compartir tu experiencia, yo reinicie un leaf que daba 40km con carga completa y después del reinicio dio 140km subió los AH60 SOC 100, y 393V.
 
Continuing my story with lost capacity. I tried to go till full stop, SOC is dropping not according voltage. With 0% SOC and car shutting down I had still 365V, after rebooting car by disconnecting 12V I drove 20 more km, later again 10+ and so on.
So car shuts down with 0 SOC but battery is half empty. Ah value impacts SOC (that is very strange). Very strange that it shuts down with enough voltage in battery. Trying to recalculate Ah, driving to empty and charging to full.
the topic is known from batteries repacked for a larger capacity bms aze0 does not allow the use of the entire capacity so we need to reprogram it for a larger ah
 
the topic is known from batteries repacked for a larger capacity bms aze0 does not allow the use of the entire capacity so we need to reprogram it for a larger ah
Maybe. So i need to recover back to good capacity. As i know it was 50Ah and now 26Ah. Maybe anyone knows exact recalculation procedure as discharge/recharge still didnt do anything. Temp is 0 outside.
 
temperature is very important, in the summer I had it that after resetting the soh to 100% it was recalculated after driving 30km without charging
now in winter it didn't count me after several charges and several hundred kilometers
 
temperature is very important, in the summer I had it that after resetting the soh to 100% it was recalculated after driving 30km without charging
now in winter it didn't count me after several charges and several hundred kilometers
Yes I agree about temps, I have seen in past that the SOH does not move on my 2014 Leaf when temp under about 7c here in UK. So guess the software does not update the SOH etc when its too cold? I dont think even when temps get back to 10c or more it will reset the 4 battery bars issue though. I tried resetting with my TOPDON AD800BT diagnostic box and still stuck at 4 bars even though the soh and ah goes back to full then drops back quickly once temps pick up which is expected on a 10 year old battery.
I wonder wiould the Dealer Nissan Consult-III Plus software and hardware reset the battery bars back to what they was??
 
The car returned to the old values of nx and cox, two errors appeared that I cannot clear, they are active all the time!IMG_1314.jpeg
 

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On the other hand, do you think you can program a TCU to release the firmware and change the way it receives orders?
It might be better to have a look at the Open Vehicle Monitoring System (OVMS). It supports the Leaf with a modern modem (Most TCUs are 2g, some were upgraded to 3g in places where 2g was shut down) and doesn't require the Nissan-specific stuff. This isn't really relevant to this thread, though.
The car returned to the old values of nx and cox, two errors appeared that I cannot clear, they are active all the time!
If the error can't be cleared, it's likely a real error. The P3180 code is just a generic code that seems to be logged when the battery has any error - which is your P33D4, marking a high Hx.

@safetyuggs do you know the date of your in-car BMS' update and its firmware at the time you were able to get the SOH update to 'stick'? Were the ones on-bench able to 'stick'? I know mine, which had an update in 2016, had the Hx and SOH reset to 4 bars as well. Could it be an update Nissan put out that does anti-reset functions? It could certainly be a watchdog within another module in response to some kind of fear that people would reset SOH and sell lemons?
 
errors occurred after resetting nx cox and bar stuck at 4 bars, bms firmware was updated in 2020.
 

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It might be better to have a look at the Open Vehicle Monitoring System (OVMS). It supports the Leaf with a modern modem (Most TCUs are 2g, some were upgraded to 3g in places where 2g was shut down) and doesn't require the Nissan-specific stuff. This isn't really relevant to this thread, though.

If the error can't be cleared, it's likely a real error. The P3180 code is just a generic code that seems to be logged when the battery has any error - which is your P33D4, marking a high Hx.

@safetyuggs do you know the date of your in-car BMS' update and its firmware at the time you were able to get the SOH update to 'stick'? Were the ones on-bench able to 'stick'? I know mine, which had an update in 2016, had the Hx and SOH reset to 4 bars as well. Could it be an update Nissan put out that does anti-reset functions? It could certainly be a watchdog within another module in response to some kind of fear that people would reset SOH and sell lemons?
SOH won't stick on the bench, but it does in the car. IIRC once I plugged the AC in, it saved the new data to the eeprom along with the increased AC charge count.
 
Cant get Ah recalculated. Batt temp usually is 3-5 degrees. Now have 1/2 of primary capacity and get ~50km.. Should I try to buy some "Launch" type tool to try to reset Ah?
 
No puedo recalcular Ah. La temperatura de la batería suele ser de 3 a 5 grados. Ahora tengo la mitad de la capacidad principal y recorro unos 50 km. ¿Debería intentar comprar alguna herramienta de tipo "Launch" para intentar restablecer Ah?
Que año es tu leaf? Yo reinicie 2 leaf 2011 y si se recuperaron las baterías
 
Cant get Ah recalculated. Batt temp usually is 3-5 degrees. Now have 1/2 of primary capacity and get ~50km.. Should I try to buy some "Launch" type tool to try to reset Ah?
You could try replacing the ambient air temperature sensor with a resistor to trick the car into thinking it is 20 Celsius. It might work if the car uses ambient temp to initiate battery recalculation

If the car uses the internal battery temp sensors to initiate, then it won't work.
 
You could try replacing the ambient air temperature sensor with a resistor to trick the car into thinking it is 20 Celsius. It might work if the car uses ambient temp to initiate battery recalculation

If the car uses the internal battery temp sensors to initiate, then it won't work.
As i know, it uses internal batt temp sensors.. i would need to drop the battery. I hope some "launch" tool could do proper reset...
 
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