Car died overnight while plugged in...

[notjjsb]

As long as the car is charging, the DC-DC converter is powering the LV circuits and maintaining the LVB. When charging ends, the car is keyed-off and the LVB is on its own, otherwise the HVB would discharge, albeit slowly. No different than leaving the lights on in an ICE, FYI.

Totally agree that in an ICE car, the battery would have gone dead due to my bone-headedness. However, given the car was plugged into an L2 charger, I would expect the GT to behave like an ICE car that is connected to a battery charger. i.e. the battery would keep charging even though the lights are on.

Naturally this didn't happen, and I'm _sure_ there are some super reasonable, deeply technical, reasons why this is impossible to implement. But to a simple computer engineer, it seems like odd behavior.

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[superdave80]

My Probe featured automatic lights off - I think it was called “battery saver”. Apparently, they had superior technology back in the 80s

Don't get me started on all the things that are a clear step back on my Mach E compared to my previous cars...

 

[RickMachE]

Headlights should have shut off on the timer, that's a programming failure.

 

[Hammered]

Headlights should have shut off on the timer, that's a programming failure.

Well they do, but he'd manually commanded them on. Are you suggesting auto > manual > auto anyway?

Sometimes the owner must assume responsibility for their actions...

 

[notjjsb]

Well they do, but he'd manually commanded them on. Are you suggesting auto > manual > auto anyway?

Sometimes the owner must assume responsibility for their actions...

100% true I manually commanded them on (like a silly person) and the auto-turnoff should not have triggered.

What I think _should_ have happened is that when the car noticed my lights were on, the 12v battery was getting low, and that the L2 charger was plugged in, the car would re-start charging to keep the 12v battery charged. I'd wake up to a bunch of alerts from the car noting my silliness of leaving the lights on, but I would be able to open my car door and shut them off.

As it stands, I fully accept my responsibility here and have been reminded about the lesson of leaving my lights on.

Thanks all!

 

[Mach-Lee]

Totally agree that in an ICE car, the battery would have gone dead due to my bone-headedness. However, given the car was plugged into an L2 charger, I would expect the GT to behave like an ICE car that is connected to a battery charger. i.e. the battery would keep charging even though the lights are on.

The 12V battery is only charged while the high voltage battery is ACTIVELY CHARGING. After charging is complete, everything in the car goes to sleep. It does not work like an ICE battery charger.

If the 12V battery gets very low it's supposed to wake up and recharge, but sometimes a charge fault prevents that from happening. If you get any kind of charge faults it's important to solve them so this doesn't happen again.

 

[notjjsb]

The 12V battery is only charged while the high voltage battery is ACTIVELY CHARGING. After charging is complete, everything in the car goes to sleep. It does not work like an ICE battery charger.

If the 12V battery gets very low it's supposed to wake up and recharge, but sometimes a charge fault prevents that from happening. If you get any kind of charge faults it's important to solve them so this doesn't happen again.

So the car is _supposed_ to note the 12v battery is low and restart charging? For sure that didn't happen. No charging faults reported by the car or charger either....

Intriguing....

 

[mjschillingtec]

I was out last night and tried to start the car from FordPass to warm it up. It wouldn't start and I got that "deep sleep" message in FP. I was a little stressed that the car would be dead, but everything worked fine. This morning my car did not condition as usual per my schedule. I am on 4.1.2 since 1/19 but this is my first sign of issues. Hoping for nothing worse

 

[johnmark]

I've had my 22 GT for about a month now and have been having a blast with it. Last night, while I slept, it seems that my car went into a "deep sleep mode" (according to the Ford app) and when I tried to start it this morning it was dead, even though it was plugged into the L2 charger. Key fobs didn't wake it up, unplugging/plugging in the L2 charger didn't do anything.

I'm now charging up my RV battery so I can pop the frunk and get a jump on the 12v battery, but WTF? How/why would the 12v battery discharge WHILE PLUGGED INTO the L2 charger?

Is there a "procedure" to recharge the onboard 12v battery correctly now that it's dead?

I received the 4.1.2 update earlier this week, but that was several days/nights ago so I won't cast shade on the update yet.

So, is this a "common" or "expected" experience? Would it be worth it to call the dealership so they can keep track of these instances? If @Ford Motor Company is listening, is there any data you want from my car, once I get it back online?

Thanks all!

I had a similar issue - my 22 GT (Feb 22 build) had a charge fault the other night and then the LVB bled dry while on the charger, leading to the same issue you mentioned - a dead car. Perhaps 4.1.2 introduced some power management bugs? When I did manage to jump/reboot the car, I got a "power train" error and took it to the dealer where it currently sits. I'm curious if you'll see a similar error when you start your car again.

 

[johnmark]

The 12V battery is only charged while the high voltage battery is ACTIVELY CHARGING. After charging is complete, everything in the car goes to sleep. It does not work like an ICE battery charger.

If the 12V battery gets very low it's supposed to wake up and recharge, but sometimes a charge fault prevents that from happening. If you get any kind of charge faults it's important to solve them so this doesn't happen again.

That's what happened to me - a charge fault that resulted in a dead LVB. What usually causes charge faults? I'm hoping it's not the hvbjb issue, but it was charging "fine" until after 2 hours it faulted.

 

[johnmark]

Well they do, but he'd manually commanded them on. Are you suggesting auto > manual > auto anyway?

Sometimes the owner must assume responsibility for their actions...

Even on my 12yo Lexus if I leave the lights in the manual "on" position they'll turn off when I lock the car from the outside.

 

[i8iridium]

I just tried your scenario in my 2022 GT. Car plugged into L2 and 90% charged per my schedule. Turned lights on manually, closed and locked door and left. Promptly at 10 minutes the lights shut off, just like every other Ford I have owned. You might have some other gremlins happening.

 

[RickMachE]

I just tried your scenario in my 2022 GT. Car plugged into L2 and 90% charged per my schedule. Turned lights on manually, closed and locked door and left. Promptly at 10 minutes the lights shut off, just like every other Ford I have owned. You might have some other gremlins happening.

Exactly my point earlier in the thread.

 

[johnmark]

I just tried your scenario in my 2022 GT. Car plugged into L2 and 90% charged per my schedule. Turned lights on manually, closed and locked door and left. Promptly at 10 minutes the lights shut off, just like every other Ford I have owned. You might have some other gremlins happening.

Do you have the 4.1.2 update?

 

[i8iridium]

Do you have the 4.1.2 update?

Yup. Plus all other updates. I just disconnected the headlight switch to simulate the switch bug to see if it still shuts off after 10 minutes.

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