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BMS firmware update

Posted: Fri Jan 07, 2022 12:38 pm
by RawVim
Is there a way for the consumer to determine if the BMS firmware update has been applied?
Or can that only be determined (and applied, if needed) at a dealer?

Thanks.

Re: BMS firmware update

Posted: Fri Jan 07, 2022 1:31 pm
by LeftieBiker
Yes. You can tell by the version number, as read by LeafSpy Pro. I just got up and can't remember the details offhand, but someone will post it shortly, I'm sure.

Re: BMS firmware update

Posted: Sat Jan 08, 2022 11:50 am
by goldbrick
Details are here https://youtu.be/H-Eq93RniJ8

Even though this video shows a 40kWh Leaf and the author mentions the old battery pn ends in A, it is identical for 30kWh versions many of which end in B

Bottom line is that the last digit of the battery part number (which can be displayed by LeafSpyPro) changes to C after the BMS update has been done. If it ends in A or B the update has not been done.

Re: BMS firmware update

Posted: Sat Jan 08, 2022 12:10 pm
by LeftieBiker
Thanks for that - especially the summary.

Re: BMS firmware update

Posted: Sat Jan 15, 2022 12:40 pm
by fester
Is this update delivered via System Updates in the Settings Menu, or is this a Dealer installed update?

Re: BMS firmware update

Posted: Sat Jan 15, 2022 12:43 pm
by LeftieBiker
Dealer installed.

Re: BMS firmware update

Posted: Sat Jan 15, 2022 1:27 pm
by OldManCan
goldbrick wrote: Sat Jan 08, 2022 11:50 am Bottom line is that the last digit of the battery part number (which can be displayed by LeafSpyPro) changes to C after the BMS update has been done. If it ends in A or B the update has not been done.
Is this only for the Gen1 LEAFs? On my November 2021 produced '22 SL+ I see 5SF0B for the HV Battery and wondering if I should be seeking a BMS update to see something that ends in C. I should be unlikely that a car that rolled out of the assembly line 2 months ago needs this update which is dated couple years now but still checking on it to make sure. Thank you

Re: BMS firmware update

Posted: Sat Jan 15, 2022 3:38 pm
by LeftieBiker
The BMS update was created to try to fix a BMS programming error that some 30kwh Leafs have exhibited (and maybe also to mask genuine degradation in the cars that have that). AFAIK, it is for 30kwh packs only.

Re: BMS firmware update

Posted: Sat Jan 15, 2022 4:56 pm
by OldManCan
LeftieBiker wrote: Sat Jan 15, 2022 3:38 pm The BMS update was created to try to fix a BMS programming error that some 30kwh Leafs have exhibited (and maybe also to mask genuine degradation in the cars that have that). AFAIK, it is for 30kwh packs only.
Thanks for confirming that. Most appreciated