RawVim
Posts: 1
Joined: Tue Jan 04, 2022 11:50 am
Delivery Date: 31 Dec 2021
Leaf Number: 1208

BMS firmware update

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.
LeftieBiker
Moderator
Posts: 18676
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: BMS firmware update

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.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.
goldbrick
Posts: 1704
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: BMS firmware update

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.
LeftieBiker
Moderator
Posts: 18676
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: BMS firmware update

Thanks for that - especially the summary.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.
fester
Posts: 45
Joined: Fri Dec 10, 2021 2:36 pm
Delivery Date: 10 Dec 2021

Re: BMS firmware update

Is this update delivered via System Updates in the Settings Menu, or is this a Dealer installed update?
LeftieBiker
Moderator
Posts: 18676
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: BMS firmware update

Dealer installed.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.
OldManCan
Gold Member
Posts: 231
Joined: Fri Nov 19, 2021 10:48 am
Delivery Date: 07 Dec 2021
Leaf Number: 553784

Re: BMS firmware update

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
2022 SL+
SoCal
LeftieBiker
Moderator
Posts: 18676
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: BMS firmware update

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.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.
OldManCan
Gold Member
Posts: 231
Joined: Fri Nov 19, 2021 10:48 am
Delivery Date: 07 Dec 2021
Leaf Number: 553784

Re: BMS firmware update

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
2022 SL+
SoCal

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