Mach-Lee

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I’m pleased to report that the threshold for automatic 12V recharge has been increased to 55% in the latest BCM software! This is a much-awaited improvement that will ensure the battery remains charged, healthy, and prevents it from running low or freezing in extremely cold conditions.

The original software had a threshold as low as 35%, while later versions gradually increased it to 40%, 45%, and now 55%, which is the ideal threshold.

If you’re unaware, the Mach-E automatically recharges the 12V battery when it reaches a low percentage to prevent it from dying. However, the percentage at which this automatic recharge occurs has changed in subsequent software updates.

No idea if or when it's coming OTA.

Ford Mustang Mach-E 12V Battery Recharge Threshold Improved in Latest BCM Software! IMG_0429
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chesteroberto

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This is great news. I haven't seen a BCM update since July, 2024. Do you know the software version for this latest BCM update?

Thanks for posting this!
 

dtbaker61

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I’m pleased to report that the threshold for automatic 12V recharge has been increased to 55% in the latest BCM software! This is a much-awaited improvement that will ensure the battery remains charged, healthy, and prevents it from running low or freezing in extremely cold conditions.

The original software had a threshold as low as 35%, while later versions gradually increased it to 40%, 45%, and now 55%, which is the ideal threshold.

If you’re unaware, the Mach-E automatically recharges the 12V battery when it reaches a low percentage to prevent it from dying. However, the percentage at which this automatic recharge occurs has changed in subsequent software updates.

No idea if or when it's coming OTA.

IMG_0429.jpeg
so, what voltage is this ?

....and for those of us that are avoiding, or have not gotten an update in a long time... is it possible to update JUST the BCM ?
 

moog

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This is EXCELLENT news!

Concerning about the "IF" in if or when regarding OTA.

This would be really bad if you had to take it to the dealer to get this BCM update.
 

noway

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Is it still disabling 12V recharge when hvb charge target percent has been reached and kept plugged in?
 


benk016

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I still have had an instance of my 12v dropping to 47% for a while. But that is the lowest it's gotten logged since December 1st.

Ford Mustang Mach-E 12V Battery Recharge Threshold Improved in Latest BCM Software! 1737738826576-nd
 

Mike G

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....and for those of us that are avoiding, or have not gotten an update in a long time... is it possible to update JUST the BCM ?
Yes.
 

dtbaker61

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dtbaker61

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I still have had an instance of my 12v dropping to 47% for a while. But that is the lowest it's gotten logged since December 1st.

1737738826576-nd.webp
how are you logging and displaying this data ?
 

dtbaker61

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benk016

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Just Lurking

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This is EXCELLENT news!

Concerning about the "IF" in if or when regarding OTA.

This would be really bad if you had to take it to the dealer to get this BCM update.
It'll probably ship by default on 2025 models. And they've sent BCM updates OTA several times before, so I bet they'll do so eventually, but right now there's a bit of a backlog of updates as you're probably aware, so who knows when.
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