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At this point I think it’s the actual hardware of the battery shell/bus bars and/or the contactors. But I’m not sure if the contactors one or both would cause this.

Replaced the BMS, 6 BMBs , battery coolant heater and fuse. bms_u029 max charge limit error is gone. But now I have these fun codes. I charged each module to 24.0 V from their original state of battery tear down at 20.7V (18mi range left) when battery was installed my range available is 28mi but...

What did you do for a solution to your error codes? Please and thank you

@JCM_76 there’s an update on this article from EV clinic that I know you are following…bms_f123 apparently is PERMANENT. They suggest as they did with bms_a029 previous article that the main BMS can be reprogrammed. This model s appears to be in worse water ingress condition than any of our cars...

Surprisingly they looked pretty clean. I have already taken a shop vacuum to the hv pack case but have to clean the contactor area and side vents still since the boards have constant voltage dust/debris can throw them out of wack.

The day I went to remove my battery approximately 2 weeks after car failure these are the codes that were active. Bms_f123 was not present at the time but I also do not have unlimited access to a lift so my battery has been disengaged since. I plan to reengage the battery this week and hopefully...

Here is roughly where the ground studs are located.

Remove the trunk liner and you’ll have a ground stud with multiple wires bolted to it both the passenger side rail and driver side rail. They are roughly where I drew circles in my picture included. Even if it looks torqued unbolt it as I did and you may have it snap off due to corrosion like...

I have a 2013 85kwH with original pack. I’ve owned it for 4ish years now and so it’s been in the Midwest since. I am a master’s student so unfortunately it’s been outside for 85% of the last 4 years. Starting from the rear driver corner the modules are numbered 1-16 in a clockwise fashion...

Hi guys, I also have bms_f123/bms_w123…13’ MS. I have taken apart my pack checking several hv components for corrosion. I found water/rust in my fuse, as well as a corrosion on several BMS boards on the modules themselves, I also found a corroded ground stud when I tried unbolting it. I am...

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Did you find the solution?