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Lightning keeps going into deep sleep, 12v appears fine

muels7

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Jan 17, 2025
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Vehicles
22 F150 Lightning Lariat
Ever since the cold weather started here (teens and colder), my lightning has started going into a deep sleep if it sits for longer than a few minutes. That means that I'm unable to use remote climate start, which isn't great when it is this cold. Also the touch unlock handles don't function and the interior lighting doesn't work until the truck is on. I have to use the fob to get in to the truck because PAAK doesn't function either, at least not to unlock the doors.

I initially thought that my 12v might be going bad. I got the truck synced up with home assistant, and bought an OBDII reader as well to track historical 12v charge and a live rate. From what I am seeing, the 12v never goes below 82% charge, and the average is closer to about 88%. I thought that you usually didn't start seeing these issues until the charge percentage was much lower.

Is it possible that the 12v is going bad even though it appears to be charging just fine?
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