Marlin's Dead Low Voltage Battery (LVB) -- Followed by Stuck in Park

[Metal_Horses]

Everyone probably knew this already, but I have been wondering why I was seeing "Battery charged to 100%" when I specifically set the limit to 90%. I just realized that it was talking about the 12v battery.

I woke up this morning to see a 2 hour old messages saying "Charging 12v battery, estimated finish time...."

I then refreshed the app and got confirmation that the 12v battery was fully charged (100%)

2 days ago when I had a "Charge error" (Below), I now know it was an error charging the 12v battery, and 30 hours later, my car was dead. If I get that error again, I'll go out and start it, move it, start a new charge session... something.

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[ChasingCoral]

Had you tried to do a software update on your own? Is that the same thing? Mine says all is updated when I manually check for updates.

Mine said up to date. They haven’t released an OTA update yet.

 

[ChasingCoral]

I think you're onto something. Guess what the 2021 F-150 and Mach-E share in common?

Sync 4.

I think it's possible sync could be responsible for the battery drain -- possibly by not shutting down properly or sleeping when it should, thereby using too much 12v power when the cars are off.

Just a guess here. But the resolution according to Ford for the problem on the F-150 is a software update.

Probably common modules in brakes, cruise, lane keeping, radars, cameras...

 

[GoGoGadgetMachE]

For reference maybe, not sure if this is just confined to the center video unit.

Battery Volt test, before and after start.

huh. that's some very interesting differences there.

 

[agoldman]

Mark are you expecting to hear anything more today? Maybe not so much with the ice and snow?

 

[sockmeister]

Probably common modules in brakes, cruise, lane keeping, radars, cameras...

Very true -- it could be any number of things that are shared. But I guessed "Sync 4" because it's new only in those two cars so far, and both have a battery drain.

 

[Regularmache]

Probably common modules in brakes, cruise, lane keeping, radars, cameras...

Are you and Marlin back together?

 

[TheVirtualTim]

Just heard from the dealer. They said it needed two software updates, which they have done. One was for the powertrain and the other was for the outside sensors. Nothing about the 12v battery. I am on my way to get it. Here's hoping there aren't any more issues!

The "Powertrain" update includes the fix about the 12v battery.

 

[ChasingCoral]

Are you and Marlin back together?

I'm afraid not:
https://www.macheforum.com/site/threads/dead-low-voltage-battery-lvb.3490/post-110774

 

[machefan]

The "Powertrain" update includes the fix about the 12v battery.

I wonder if the Field engineer that suggested replacing part - LJ9Z-14G490-A on my MME, was not knowing about the pending software update? Would I fall under this?

 

[TheVirtualTim]

I wonder if the Field engineer that suggested replacing part - LJ9Z-14G490-A on my MME, was not knowing about the pending software update? Would I fall under this?

Possibly. In my case there were no hardware issues.

I prefer to let Ford to handle the communication, but I believe they now have a resolution (a fix has been applied to my car already).

Possibly I'll be able to share more at some point but I feel information was shared with me in confidence and I should probably not disclose it without permission.

The issue does have Ford's full attention.

 

[GoosePond08]

@TheVirtualTim did your vehicle battery die as well?

 

[JSOrange97]

Possibly. In my case there were no hardware issues.

I prefer to let Ford to handle the communication, but I believe they now have a resolution (a fix has been applied to my car already).

Possibly I'll be able to share more at some point but I feel information was shared with me in confidence and I should probably not disclose it without permission.

The issue does have Ford's full attention.

Did they ask you to sign an NDA?

 

[TheVirtualTim]

Did they ask you to sign an NDA?

LOL ... well technically no. But a gentleman doesn't repeat information shared in confidence.

 

[sockmeister]

The "Powertrain" update includes the fix about the 12v battery.

Whoa, really? Are you sure?

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