"System off to save battery"

[Tomwilli2025]

Tonight I got a message on the screen that says "System off to save battery" when I turn the truck off and shut the door. I've only had the truck a week and the first to see this message. I did get update 3.5.2 this week. Has
anyone else seen this message before?

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[PA Lightning]

My wife got that message in her Explorer before her battery died. Probably your 12v battery

 

[Maxx]

Tonight I got a message on the screen that says "System off to save battery" when I turn the truck off and shut the door. I've only had the truck a week and the first to see this message. I did get update 3.5.2 this week. Has
anyone else seen this message before?

If trickle charging 12V makes the problem go away, there may be a problem in main pack charging 12V.

 

[Crilly]

Did you have the truck plugged in when you got the down load? If not maybe it drained the 12 volt a little. If it goes away, I would not worry about it.

 

[RickLightning]

It should go away as the HVB charges the LVB. If it keeps coming back, then it can mean that the LVB is bad, or got too low to charge, a d needs to be replaced.

Some Mach-E owners put their LVB on battery maintainers after acquiring the vehicle, but it should not be necessary.

 

[Tomwilli2025]

Thanks for the comments. I put my multi-meter on the battery and the LVB checks out fine. Read 12.6 with truck off and 14.6 with HVB on. I did notice that the negative terminal was loose enough to move by hand so I tightened it up. Hopefully this will not continue to be an issue. I did read somewhere on the forum that others had loose negative terminals.

 

[Maquis]

Thanks for the comments. I put my multi-meter on the battery and the LVB checks out fine. Read 12.6 with truck off and 14.6 with HVB on. I did notice that the negative terminal was loose enough to move by hand so I tightened it up. Hopefully this will not continue to be an issue. I did read somewhere on the forum that others had loose negative terminals.

I’m betting that tightening the loose terminal solves your issue.

 

[hihosilver]

I just had this message this morning. I'll be checking those 12V battery terminals.

 

[hihosilver]

Everything was tight and in place. Unknown cause at this point and didn't get the message the following morning. Although I do have some gremlins. See my post about bizarre mileage being recorded on the trip log.

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