Hight Voltage Battery overheating during charging on L2 after OTA

AngryMan

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Ok . So what do we KNOW so far ?
Years effected ? 21 ? 22 ? 23 ?
Battery packs ? Standard ? Extended ?
Models ? GT ? Select ? CR1 ?
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Howard

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My 23 premium ER RWD installed 6.7.0 on 12/13 and then installed the 23-PU0722-DC-CHG3 on 12/15. I started a L2 charge (Grizzl-E 40A 240V) at 10:09 am CT this morning. I am monitoring the charge via CarScanner app; so far my charger input power has been between 8.9 to 9.1 kw (normal value). Fans came on for a short period just after the start of the charge (I was in the garage at the time) but no heaters nor cooling so far during the charge. HVB temperature (MME is in garage) is 57F. According to Fordpass, 2.8 kw added during first 18 minutes of charge (average of 9.3 kw/hr charge rate). Just some data points from a L2 charge on a 2023.0 MME.
 

AngryMan

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Not to hijack the thread but if you're having this issue take the poll.Maybe we can give Ford a starting point if this is model specific....because this is an issue .
Over heating HVB after OTA Poll
 


kronstein

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My 23 premium ER RWD installed 6.7.0 on 12/13 and then installed the 23-PU0722-DC-CHG3 on 12/15. I started a L2 charge (Grizzl-E 40A 240V) at 10:09 am CT this morning. I am monitoring the charge via CarScanner app; so far my charger input power has been between 8.9 to 9.1 kw (normal value). Fans came on for a short period just after the start of the charge (I was in the garage at the time) but no heaters nor cooling so far during the charge. HVB temperature (MME is in garage) is 57F. According to Fordpass, 2.8 kw added during first 18 minutes of charge (average of 9.3 kw/hr charge rate). Just some data points from a L2 charge on a 2023.0 MME.
Can you please try Ford Mobile Charger 120V?

Mine has no issues charging on a high power L2 220V 48A EVSE (Tesla wall connector j1772 version)
 

Howard

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Can you please try Ford Mobile Charger 120V?

Mine has no issues charging on a high power L2 220V 48A EVSE (Tesla wall connector j1772 version)
I don't currently have my Ford mobile charger; a friend of mine has it. His mobile charger failed and I let him borrow mine. Sorry.
 

AL C

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My problem started after update 6.6, as charging on level 1 or 2 starts heating the battery until it gets hot enough that the vehicle has to start cooling it. It uses around 2 kWh per hour. Took it to the dealer 2 weeks ago and they said they never heard of this issue but updated the software on 3 modules. Took it home and it did not fix the issue. Have another appointment in the new year. I hope this does not cause any hardware issues down the road as the car seems to be working harder charging on a level 2 charger compared to fast charging.
 

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I hope that for once Ford will understand that It is urgent to correct the problem that they themselves created.
They know and are working on it. But it could take a couple months. I'd suggest trying to find a workaround in the meantime. Sounds like it maybe isn't an issue if you use a 40+ amp EVSE?
 

Gimme_my_MME

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They know and are working on it. But it could take a couple months. I'd suggest trying to find a workaround in the meantime. Sounds like it maybe isn't an issue if you use a 40+ amp EVSE?
The higher the current of the EVSE the lesser the impact of the issue. L1 is going to be the absolute worst thing you can do
 

azerik

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They know and are working on it. But it could take a couple months. I'd suggest trying to find a workaround in the meantime. Sounds like it maybe isn't an issue if you use a 40+ amp EVSE?
Just as soon as winter is over they'll have 'fixed' it. So as I see it this is the flip side to the 40+ amp L2 derating. I'd venture that those who are derated don't have the battery heating issue and vise versa. I am just sitting here shaking my head that this kind of thing could just take, I don't know, we're going on 10 months of L2 derating. As I see it they whoops and hope people ditch the car before they have to fix is. The list of real, actually problems (not the stupid car moving in the IPC) but, again, a group of known cars can't charge or charge terribly slow and the urgency is nil. It really can't be that hard to $git revert at Ford and change the 20kb of code back. If it is they have zero reason to continue down the OTA road. But hey 10 months later and the L2 derate hasn't gotten anywhere, charger ports are non-existant, and a fix, 'is getting there, soon'. But my gosh look at all them MME's stacking up on dealer lots. A sea of unwanted EV's.

Please someone make a car that's worth a shit and don't bork it up after people bought it.
 

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Are the only cars affected 2021s?
So far both 2021s and 2022s. Looks like maybe if you have 6.6.0 + 6.2.0 re-release installed and it becomes more obvious with L1 or low kW L2 EVSEs since most the charge doesn't go into the battery but into heating.

Edit: So impacted MMEs are perhaps always preconditioning during active charging?
 
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They know and are working on it. But it could take a couple months. I'd suggest trying to find a workaround in the meantime. Sounds like it maybe isn't an issue if you use a 40+ amp EVSE?
I hope it will be less than a few months…. My MME has been at the dealership since this morning and Ford Canada is also on the case.

Maybe my car data can help find a solution faster? ????

Charging on 40 amp EVSE does not correct the situation. it’s simply that the extra power allows for a small charge despite the consumption for heat.
 

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Can you folks tell me how i can tell what software versions(s) I have? I was stuck at 6.1 (I think), then saw a 6.7 update message in Ford pass, then got the Priority Update 23-PU0722-DC-CHG3 last night that this thread is discussing. When I go to software updates on the display, that last one is all it shows. Is there somewhere else to look?
They used to show in the Message Center but that stopped a few months ago. I guess they didn't want us to know where we're at anymore.
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