12 volt battery

[MME Farmer]

I did search and didn't really find anything pertinent but you can chew me out anyway. At least 2 to 3 times I have received a message saying that I should plug in because the 12 volt battery is low. This has been this summer and the HVB has been at least 50 - 60%. My understanding is that the HVB charges the LVB when needed even when parked or am I wrong. Since Ford really screwed up with no cooled seat I do have a very good fan seat cushion that is plugged in under the armrest and does have an indicator light that is on for at least a while when parked, but then seems to go off after awhile. None of the times has the car been parked very long, maybe a day or two. I've had so little trouble with this rig and hope that doesn't change.

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[Mach-Lee]

The seat cooler probably isn’t it, that shuts off a few minutes after the car is off.

Please see my guide for ideas why you are draining your 12V battery:

https://www.macheforum.com/site/threads/how-to-recondition-service-your-12v-battery.11069/

 

[Hammered]

I'll have to check if the MME's BMS gets ignored with blower setting of 5 or higher like it does in the F150. That's an unknown exploit I discovered that's been keeping the AGM batt folks happy since I found it, ending the sleeping sync issue.

 

[josephyancey]

I almost asked this exact question today. When I first got my 2021 CR1 Job 1 I used to get the LVB error messages ALL the time. Since Ford fixed their LVB charging issues I haven't gotten them for probably a year or so. Starting a few days ago, maybe right after the 5.1.1 update, I've gotten the low battery messages each morning. This mornings message was the first one to say to plug in to charge the LVB. I haven't been charging at night since I haven't needed to (only use ~10% each day or so). I'm wondering if something changed recently or if my LFB is finally dying after the abuse it was put through in its first year.

 

[MME Farmer]

The seat cooler probably isn’t it, that shuts off a few minutes after the car is off.

Please see my guide for ideas why you are draining your 12V battery:

https://www.macheforum.com/site/threads/how-to-recondition-service-your-12v-batter
Wow, that's more than this old guy can probably handle. So far it's just been random and the more I use it the less chance I'll get this message. I do have a booster and have a maintainer, maybe I better start carrying one or both. Thanks, for the information.

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