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Post by daredevil82 on Sept 10, 2022 7:07:59 GMT
I think it's almost impossible, but I try anyway: I have an ID.3 Pure 45 kWh bought in Italy and by connecting an OBD reader I found that the net battery capacity is less than that displayed on the infotainment. This means that if the OBD said that the "SoC display" is 90%, the infotainment said the car is at 100% and stops charging. I suppose VW wants to limit the capacity to discourage buying in favor of the more expensive model (Pro 58 kWh) otherwise there would be too little difference in range. I suppose the 45kWh is actually a software limited 52kWh (I'm not talking about the limitation made by the BMS which it is right that there is). So my question is this: is it possible to remove this limitation and make sure that all 52kWh are available like the ID.4? I attach some screenshots with the SoC at 100% to demonstrate this. You can look the Soc Display (90%), the number of cells (96 so we have 8 modules, not 7 as VW declares), the battery voltage (390V instead of at least 400V) ...
Sorry for my English     |
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Post by whynot on Sept 17, 2022 15:08:55 GMT
Found anything yet?
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Post by daredevil82 on Sept 22, 2022 5:32:09 GMT
Not yet  |
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Post by trueid on Jan 27, 2023 15:55:31 GMT
Dare could you tell me how to see those values on obdeleven? I can't see yours screenshots. Thanks
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Post by daredevil82 on Jan 28, 2023 10:36:03 GMT
I use Car Scanner. It's a free Android App that work with a OBDII ELM327 adapter. I don't know if work also with ObdEleven adapter.
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Post by whataboutthis on Jan 28, 2023 10:43:39 GMT
Afraid not the only thing that works with OBD11 Dongle is the OBD11 Software.
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Post by daredevil82 on Jan 30, 2023 15:24:41 GMT
Maybe I found the solution! But I can't try because I don't bought yet the OBDEleven PRO package. Now I have only the dongle.
Control unit > Application Server Infotainment > Adaption > battery_type_selection. The variable "battery_type" can set as 48kWh, 55kWh, 62kWh and 82kWh. I think we must set 55kWh (gross) to have 52kWh net like ID.4. We can also change the charge power from 50kW to 100kW or 125kW with the variable DC_charging_power. If somebody can try please give me the feedback  ![]()     |
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Post by mencey on Jan 31, 2023 15:21:55 GMT
That's good for what you want to code. This option has nothing to do with the ecu of the battery, it is infotaiment and serves to make consumption calculations. If you change it, you will get erroneous data on battery consumption and charges.
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Post by daredevil82 on Jan 31, 2023 15:55:49 GMT
I'm not sure what you say is right. Because I think VW only modifies the value read by BMS (SoC Display) before passing it to the infotainment. if the BMS says the SOC display is 90% the infotainment tells the user it is 100%. At the same time if the user sets the charge level to 100%, the BMS is told to charge up to 90%.
The proof of this is that if i charge to 100% and use ABRP with the dogle obd, ABRP reads a SOC of 90% because ABRP read the value from the BMS, not the value that I read on the infotainment. |
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Post by mencey on Feb 1, 2023 7:50:29 GMT
The encodings of the ABS Motor BMS etc cannot be encoded without a factory control code and is unique since it is associated with the VIN of your car, the infotaiment system does not have control over protected ECUs only receives data and does not send them.
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Post by daredevil82 on Feb 3, 2023 11:46:44 GMT
Ok but I don't want modify the BMS. The value that provides the BMS Is correct for a battery of 52kWh net (55kWh gross). Is the infotainment that show a value converted for make the user believe that the battery is 100% charged but in fact it is 90% charged.
I don't know if it's enought change that paramerer but I'm almost sure that it's only a paramerer that chose if to show the real percentage (like ID4) or the fake percentage (like ID3).
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Post by gianlu98 on Aug 13, 2024 20:12:31 GMT
Somebody try this operation?
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Post by zdenekid4 on Aug 14, 2024 17:21:39 GMT
Send me the VIN of the car with the 45KW battery. I can find out quite easily how many blocks are in the car and compare it with another car with a 52kw battery. That's probably the best solution. Vin probably as a private message..NOT public
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