So After I had been writing that the "junkyard mode" (deliberate bricking by design) was just speculation that I no longer think is correct, Moritz reports that it is correct. However, if removing the 12V battery triggers junkyard mode as I previously suspected, why is "Vincent Rapide" reporting successful cases of long term storage with the battery disconnected? So we still don't know for sure what triggers the bricking process - although keeping a small charger connected to the 12V battery during long term storage is the sure method to prevent it.
And, at least we now know how to fix it - which admittedly is still a difficult and expensive job - especially the sending of the BMS to Europe to get reset - although I presume it no longer has to go to that userous shop in the Ukraine.
So first of all Minecooky take you message and call it truth. So forget about the junkyard mode, as this is really nonsens and proven by measurement, internal documentation and reengineeing of the BMS firmware.
I just start a new post about giving some addition background knowledge from developer view.
Also the P18051C i addressed in the post. There are now colleagues around the world which could help you. Also the ukraine option is not too bad as he really knows (most times) what to do.
Eqpassion is just forwarding it to a other guy in Lithuania, who even fix it and switch of HV isolation measurement functions. This is just real dangerous and even not necessary if he would do the job right.
If you what to fix it in US or CAN i can link you locally.
Or i can tell you a European shop which can really fix it and not just reset the P18051C
For reach to reset P18051C only you even do not need to open the BMS at all, if you really understand the BMS functions. I also checked the work of 5 different sources in meantime and can tell you which unit is done by who
and what is done wrong.