Deep Sleep Mode triggered at what cold temperature?

[sdingeldein]

It turned fairly cold in NC 1 week ago with lows in the low 20s. A couple of mornings my car has not heated up (not plugged in) and my watch reports the vehicle is in deep sleep modes. I know from the Ford site that there are three things that will put it into deep sleep: not driving for 14 days, voltage issues, and cold/hot weather. My truck was in last week because of odd electrical issues but they just did CSPs and reset the system and it's been fine since then.

My question is this: how cold does it need to be to go into deep sleep mode? Also, when it is cold, if I plug it in at night will it heat up normally in the morning?

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[Grumpy2]

Also, when it is cold, if I plug it in at night will it heat up normally in the morning?

Plug in at night and set a departure time and it will heat the battery and the interior for you.

 

[Heliian]

deep sleep modes

I live in the cold and have cold soaked my truck for days, never heard of deep sleep mode and its not in the owners manual.

Where did you hear about this?

Edit: I see it's a fordpass connectivity thing and isn't specific to the lightning. It's 12v battery most likely reporting a lower voltage.

 

[sdingeldein]

Interesting as they just checked the 12V and said it was OK.

 

[Heliian]

Interesting as they just checked the 12V and said it was OK.

There have been a few areas of concern with the 12v battery.
Poor connections at the battery AND in the wiring beyond the battery
12v battery monitor system, the sensors attached to the battery had to be replaced, it was a CSP from ford.
Just generally weak batteries. Standing voltage is not a good way to determine actual battery capacity.

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