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[Shayne]

This really sounds like your 12V battery died...

That was at 10AM when I went out to try your suggestions . I went for a snowshoe eat lunch and just went back out, unlocked it with my phone, started up and back to normal again. Drove it and it is now working fine. I tell you that sht does not instill great confidence for my wife. No software update so that is not what was going on.

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[Shayne]

Yep. The "Hill start assist" error message is one that appears in my Escape when the 12V battery gets too low. (Along with a bunch of other false errors that were really just a result of low battery power confusing the system.)

Weird that that message is even inside the MME programming, as it doesn't even apply to BEVs.

Been plugged in all the time and I understood ford maintains the 12v if plugged in? Been cold could have been frozen? Warmed up to -10C now.

 

[SnBGC]

This really sounds like your 12V battery died...

Good suggestion. Low voltage would cause the vehicle to begin shutting down modules.

The OP should check LVB voltage with vehicle turned off. Does the MME have a power point that is hot when vehicle is turned off? If so, something like this will do the job...

 

[JamieGeek]

That was at 10AM when I went out to try your suggestions . I went for a snowshoe eat lunch and just went back out, unlocked it with my phone, started up and back to normal again. Drove it and it is now working fine. I tell you that sht does not instill great confidence for my wife. No software update so that is not what was going on.

Totally understandable. I'd be a bit worried too (and am for my own car).

Interesting that it recovered. Hmm. I wonder if it wasn't completely dead but had enough power left to kick on the DC-DC and since you're plugged in with available power (and the HVB is fully charged) that charged it back up enough to work again later. Just a thought, however.

 

[SnBGC]

Been plugged in all the time and I understood ford maintains the 12v if plugged in? Been cold could have been frozen? Warmed up to -10C now.

Wow. That is cold. Do AGM batteries have problems with temps that low?

 

[SnBGC]

Totally understandable. I'd be a bit worried too (and am for my own car).

Interesting that it recovered. Hmm. I wonder if it wasn't completely dead but had enough power left to kick on the DC-DC and since you're plugged in with available power (and the HVB is fully charged) that charged it back up enough to work again later. Just a thought, however.

I am thinking the same thing.... ?

 

[JellyBelly]

It is like wtf?

Grrr feel bad for your issues. Hope the dealer abd Ford eventually sort these out. I am very nervous am these and who knows what else we all experience with these early cars.

 

[Shayne]

I have agm in my dump trailer and tractor and never a problem in the cold. -10C is not cold on a battery it was -27C (-17F) yesterday morning not a prob.

 

[Shayne]

Totally understandable. I'd be a bit worried too (and am for my own car).

Interesting that it recovered. Hmm. I wonder if it wasn't completely dead but had enough power left to kick on the DC-DC and since you're plugged in with available power (and the HVB is fully charged) that charged it back up enough to work again later. Just a thought, however.

I am pretty sure charging and conditioning is not working as it should yet

Edit: Glad to have my simple scheduling problem only back .

 

[dbsb3233]

Been plugged in all the time and I understood ford maintains the 12v if plugged in? Been cold could have been frozen? Warmed up to -10C now.

It's supposed to, yes. Sounds like there's definitely something wrong that needs to be addressed with service. Just saying that it looks like the 12V battery isn't charging properly, based on what you've described. That's the 2nd time I've heard of the same apparent problem.

If the car becomes undrivable, and you really need to move it (rather than the dealer coming to load it onto a flatbed), you can charge the 12V battery. There's jumper points available under the right-side frunk compartment cover. But that's sort of a last resort. I'd let the dealer handle it if possible. If it's currently failing to charge, you may have limited juice left in the 12V to even drive it (if it's not already past that point).

 

[Shayne]

Good suggestion. Low voltage would cause the vehicle to begin shutting down modules.

The OP should check LVB voltage with vehicle turned off. Does the MME have a power point that is hot when vehicle is turned off? If so, something like this will do the job...

I am more about rebuilding small blocks and 2 speed powerglides. I am not too sure what I would be doing or measuring on this ev right now. I will leave that for the recall. Hope it does not become an ongoing problem. Thing runs great just will not take my preferred charging schedule and of course the notices this morning. Me I will just walk away from them my wife takes in more personally.

 

[Shayne]

It's supposed to, yes. Sounds like there's definitely something wrong that needs to be addressed with service. Just saying that it looks like the 12V battery isn't charging properly, based on what you've described. That's the 2nd time I've heard of the same apparent problem.

If the car becomes undrivable, and you really need to move it (rather than the dealer coming to load it onto a flatbed), you can charge the 12V battery. There's jumper points available under the right-side frunk compartment cover. But that's sort of a last resort. I'd let the dealer handle it if possible.

Thanks; so I can hook the charger directly to the jumpers under the passenger head light without taking the frunck apart to get at the terminals?

 

[dbsb3233]

Oh, I erred earlier when I said "Hill Start Assist" shouldn't even be there. I thought that was for starting an ICE engine on a hill. It's not...

https://www.fordservicecontent.com/...&userMarket=USA&div=f&vFilteringEnabled=False

 

[JamieGeek]

Thanks; so I can hook the charger directly to the jumpers under the passenger head light without taking the frunck apart to get at the terminals?

No, the terminals there simply open the frunk they don't do anything else.

Under the hood on the driver's side beneath the panels are the two jump points for the 12V battery.

 

[Shayne]

No, the terminals there simply open the frunk they don't do anything else.

Under the hood on the driver's side beneath the panels are the two jump points for the 12V battery.

That is what I thought rip it apart to get at the 12v . Going to be hard for me to jump on board with that on a vehicle that is less than a week old and under warranty.

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