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ID.3 Pure shows underestimated SoC
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bizzobaz |
On ID.3 Pure 45kWh the SoC provided by ABRP is underestimated with respect to the real one of about 10%.
For example, if the car shows 100%, ABRP shows 90%.
If the car shows 76%, the app shows 68%.
I'm using the latest ABRP version (4.5.0 iOS)
There was a similar issue here abrp.upvoty.com/b/report-a-bug/bmw-i3-shows-wrong-live-soc/ that is marked as DONE but in reality is not, therefore I'm opening a new one.
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Zoltán Tolnai
I can confirm the issue exists. On the ID.3 pure models, calculating display SOC from BMS SOC is a different equation because of the larger top buffer.
This one is accurate: Disp SOC = BMS SOC *1.2625-9.0947.
Linda
Status changed to: User Feedback
Linda
Hi
Does it still show the wrong number? Right now it says 68% from your car and in the app when the automatic settings is turned on.
bizzobaz
Yes, it is still showing the wrong number.
ABRP shows always a number 10% lower than what the car shows.
Jaro B
Hello,Hello,
I can confirm this issue with ABRP reading values via OBD on ID.3 Pure.
Actual behavior is, that at 100% charge it shows in ABRP 90%. When discharging the car, the difference continuously reduces. At 50% charge, ABRP shows 45%, and I believe at 0% it would show proper 0% - though I never got to this point.
It seems like if ABRP works in range of 0-90% while car works in range 0-100%. This is causing an issue in estimations and possibly in consumption calculation, because those 45kWh (0-100% car range) are fully available in ABRP range 0-90%.
Note that 90% is a real value from BMS when car shows 100%. This is because ID.3 Pure version has a huge buffer zone - 45kWh net, 55kWh gross battery size.
Also note that in ID.4 Pure which uses the same 55kWh battery, there is 52kWh net capacity (compared to 45kWh of ID.3 Pure). So I believe ID.4 Pure would not have this issue as it does not seem to have this top buffer zone.