The Good news for us is that there is no issue with Kia Cars.
Either the N
iro EV or the new Soul EV.
They share the same BMS and thermal system as the Kona, but use SK cells not LG.
More news on the problem with Kona EV.
It seems that all the 13 fires were caused by L2 charging, and most occurred after the SOC reached 100%.
None of the 13 cars had the new BMS update.
The rumour about slowing the charging speed seems not to be true. But am not certain yet.
A new rumour suggests that all owners of the Kona EV will get $500 compensation for the reduction in charging speed.
The actual software 'fix' is an update to the BMS. This update began in March 2020.
(It doesn't fix the cells, it just warns you that the cells are faulty - and disables the conditions that could case a fire if they are.)
1/ It fixes an issue where battery cooling wasn't working, and where batteries could warm up to 50C or 120F or higher.
2/ It imposes new validation at startup and throws faults if any of the cell groups deviate by more than 0.1V from the others.
3/ It does a better job of keeping the 12V battery topped up.
The real issue is faulty cells. Presumably the updated BMS will be able to detect the problem before it becomes dangerous, and the cars with faulty cells can get their battery replaced. LG Chem is denying it is their issue, but it does seem obvious that this is the main fault.
The problem has been stated to be with the battery separator.
One nightmare user experience sheds more light on this BMS update.
Ericy wrote:... I had the BMS service done today. At the time it seemed to go OK - I got home at dinnertime. Just now I go to plug the car in. Aaaand it won't charge...
The cell deviation has to be < 0.1V. The original TSB comes right out and says this - if you come into the shop with more than this they need to replace the battery *first* before attempting to apply the software update.
If they skip that check, then you end up in my situation - it throws a fault if you try and charge the battery, and the car has to go and sit at the dealership until a replacement battery becomes available.
I should note that I believe my car was right on the edge - it is indeed possible that it barely passed the test so they did the update, but by the time I got home, the deviation increased just a little bit - just enough to put it over the edge.
He's been waiting 3 months for the replacement battery.
-Hyundai Motor, LG Chem in spat over Kona EV firesKONA EV $500) Hyundai Company is considering a plan to compensate customers ..BMS update fail...
The codes for using Torque Pro can be found by clicking the link in the website icon under my user name on the left.