Front battery

[Henry Ford]

It does charge when it gets below a certain voltage for a certain amount of time. I’ve seen it occur a few times on mine. Lots of threads early on about this process, especially how it waits too long before it starts to charge.

I never had issues so I can't say if the BMS CSP did anything but I thought it was supposed to address low voltage on the 12V battery.

Also, I think there have been other updates to the way LVB charging is handled. For instance, I believe Accessory Mode used to be on 12V but it is now on full system power? I could be mistaken...

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[MaintGrl]

It does charge when it gets below a certain voltage for a certain amount of time. I’ve seen it occur a few times on mine. Lots of threads early on about this process, especially how it waits too long before it starts to charge.

That could be a "setting's" issue. Could that be adjusted in/with Forscan?

 

[NCevGuyF150]

Yes, the 12 V battery. What is the HVB?

High voltage battery. For drivetrain.

 

[bmwhitetx]

That could be a "setting's" issue. Could that be adjusted in/with Forscan?

Maybe, but I need the ICE guys to figure it out!

I never had issues so I can't say if the BMS CSP did anything but I thought it was supposed to address low voltage on the 12V battery.

Also, I think there have been other updates to the way LVB charging is handled. For instance, I believe Accessory Mode used to be on 12V but it is now on full system power? I could be mistaken...

Agree, I suspect we have received OTA's that have improved this. I recall someone mentioning they saw the DC-DC charger operate in Accessory mode. And it does appear that the inhibit updates might be engaging the DC-DC charger now whereas before we frequently got failed updates for 12V too low.

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