Is this 'deep sleep'

[haze10]

2024 Lariat Hybrid. Experiencing some new issues. Interior cabin light does not come on when I enter the vehicle while it is not running. If I exit while running or after turning off, it will work. After shutting down vehicle, headlights and cabin light would stay on for about 30 seconds, but now its only about 4 seconds. Winter here in New England and I haven't been driving the Maverick as much, preferring my 4x4. Maverick could sit for up to two weeks without driving. But I have driven it at least once every two weeks to keep battery charged.

Is there some kind of internal programming that changes the parameters depending on usage, or even outdoor temperaturs?

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[Waterick]

IIRC, two weeks of inactivity is the Ford programmed time to activate deep sleep to preserve battery. Are you starting it within the 2 week time frame? If so, then voltages are dropping.

 

[Master Blaster]

2024 Lariat Hybrid. Experiencing some new issues. Interior cabin light does not come on when I enter the vehicle while it is not running. If I exit while running or after turning off, it will work. After shutting down vehicle, headlights and cabin light would stay on for about 30 seconds, but now its only about 4 seconds. Winter here in New England and I haven't been driving the Maverick as much, preferring my 4x4. Maverick could sit for up to two weeks without driving. But I have driven it at least once every two weeks to keep battery charged.

Is there some kind of internal programming that changes the parameters depending on usage, or even outdoor temperaturs?

Yup, sounds like you have a heavily-sulphated battery. It will go into deep sleep and shut down nonessential services when the voltage drops to about 11.9V indicating a charge of less than 25%. From your description of the short lights-on time, you probably are not getting it much above that point after driving it. You're going to need a new battery in a hurry...

 

[REMUB40]

2024 Lariat Hybrid. Experiencing some new issues. Interior cabin light does not come on when I enter the vehicle while it is not running. If I exit while running or after turning off, it will work. After shutting down vehicle, headlights and cabin light would stay on for about 30 seconds, but now its only about 4 seconds. Winter here in New England and I haven't been driving the Maverick as much, preferring my 4x4. Maverick could sit for up to two weeks without driving. But I have driven it at least once every two weeks to keep battery charged.

Is there some kind of internal programming that changes the parameters depending on usage, or even outdoor temperaturs?

I would call that "battery saving mode". It should show up on the Ford App. Dealer checked my battery and replaced it under warranty.

 

[MakinDoForNow]

2024 Lariat Hybrid. Experiencing some new issues. Interior cabin light does not come on when I enter the vehicle while it is not running. If I exit while running or after turning off, it will work. After shutting down vehicle, headlights and cabin light would stay on for about 30 seconds, but now its only about 4 seconds. Winter here in New England and I haven't been driving the Maverick as much, preferring my 4x4. Maverick could sit for up to two weeks without driving. But I have driven it at least once every two weeks to keep battery charged.

Is there some kind of internal programming that changes the parameters depending on usage, or even outdoor temperaturs?

The courtesy lights stay on for your chosen settings. 0 seconds, 20 seconds, maybe more I don't remember. They will turn off also when 12v battery drops below 12.1volts. if you are going to not drive Maverick for 4 days, I recommend putting a multi cycle maintained on the jump posts to keep 12v fully charged to prevent sulfation. also put it on for several days anytime the dome light does not eliminate. You don't have to actually drive it but you can put it into ready to drive for 1.5 hours once a week. The ice will come on for few minutes about 3-5 times during the 1.5 hours so won't use much gas. Maintainer is better. Need to run it once a month and drive short distance. You can double lock the truck to turn off the courtesy lights early. Also don't leave anything plugged into the dash power point as that could run down the 12v which has up to 90 minute delay off on it.

 

[BlueSpec1]

Symptoms sound like Deep Sleep.

414-01 Battery, Mounting and Cables Description and Operation
For HEV/BEV vehicles, a DC/DC converter control module is not dimensioned to support all loads in all situations.
In some situations, energy has to be drawn from the battery.

Vehicles built before 2025 have a partial load shed strategy.
Vehicles built after 2025 contain the full load shed strategy.

During cold conditions, the charge acceptance of the battery is very low which increases the time needed to recharge the battery. This means that it can take up to several hours of driving before the battery is recharged

Battery Load Shed - Load Shed Charts
https://www.fordedgeforum.com/topic...stem-pts-whats-new-item-on-battery-load-shed/

 

[Ozarkbeard]

2024 Lariat Hybrid. Experiencing some new issues. Interior cabin light does not come on when I enter the vehicle while it is not running. If I exit while running or after turning off, it will work. After shutting down vehicle, headlights and cabin light would stay on for about 30 seconds, but now its only about 4 seconds. Winter here in New England and I haven't been driving the Maverick as much, preferring my 4x4. Maverick could sit for up to two weeks without driving. But I have driven it at least once every two weeks to keep battery charged.

Is there some kind of internal programming that changes the parameters depending on usage, or even outdoor temperaturs?

Just sounds like you have a dying battery. Take it to the dealer and they can check the battery.

As others have suggested, if you don't drive it for a few days, connect a battery maintainer to the jump points in the engine compartment - driver's side. The user manual shows specifically where the jump points are located on the Hybrid.

A battery maintainer takes just seconds to connect. And it may increase lead acid battery lifetime by several years.

 

[haze10]

I've been driving it lately. I' check the voltage when off to see where the battery is. I would think it would be able to go two weeks without an issue. If it is in deep sleep, how long does it take to get out of it. Is it just a battery voltage threshold, or is more like multiple starts aat a specific battery voltage level.

 

[CD_SM]

I've been driving it lately. I' check the voltage when off to see where the battery is. I would think it would be able to go two weeks without an issue. If it is in deep sleep, how long does it take to get out of it. Is it just a battery voltage threshold, or is more like multiple starts aat a specific battery voltage level.

I believe it's just voltage level at that time.
Also I recently realized that the batter recharges better in Sport mode. (It's probably been said here before but I missed it)

Background - my 24 XLT only got deep sleep a few times, but the 12v and Flexbed started turning off immediately when the truck was ~9 months old. Ford replaced the battery and that fixed it. But now - 2 months later - the 12v occasionally shits off immediately again. I haven't been driving more than a couple miles at a time lately, and driving gently at that to keep it electric as much as possible, so it probably wasn't getting enough charge. After a 7 mile drive in Sport mode it came back fine.

 

[MakinDoForNow]

I believe it's just voltage level at that time.
Also I recently realized that the batter recharges better in Sport mode. (It's probably been said here before but I missed it)

Background - my 24 XLT only got deep sleep a few times, but the 12v and Flexbed started turning off immediately when the truck was ~9 months old. Ford replaced the battery and that fixed it. But now - 2 months later - the 12v occasionally shits off immediately again. I haven't been driving more than a couple miles at a time lately, and driving gently at that to keep it electric as much as possible, so it probably wasn't getting enough charge. After a 7 mile drive in Sport mode it came back fine.

Sport mode is one of the ways to keep ice running ALL THE TIME so there could be more current available to charge 12v. However a maintainer will definitely bring it to 100% and then desulfate and destratify the 12v. I use the noco 5g because it will charge the battery to 80-85% 2.5 x faster than the 2g then either one enters float mode and tops it off the same.

 

[haze10]

Measured battery voltage. Truck was in the garage for 24 hours. Vehicle not running.
Voltage was 11.69 VDC. Put it on the charger overnite. Will see what happens.

 

[Matso]

Well known and pervasive problem in the hybrid. It's even being reported in the '25 MY. Ford's supposed fix is the software update SSM53087 which has not been released yet.

 

[MakinDoForNow]

Measured battery voltage. Truck was in the garage for 24 hours. Vehicle not running.
Voltage was 11.69 VDC. Put it on the charger overnite. Will see what happens.

How did you take the 11.69. if you opened the door then the truck is waking up so the reading will be reduced somewhat varying by where you take it and what current is being used more or less upstream from where you are taking the reading. In any case it will be low. When I put my noco g5 on my battery jump posts and 12v is below 12.1v I will try to leave it on for at least five days removing it as I need truck. After it is "charged" I will leave truck locked with noco on jump posts and every 24 hours will unlock and lock truck which will cause noco to check battery and charge it to 100% and possibly cause the battery learn procedure to be run. Hopefully this will let the bms see the battery at 100% voltage several times in a row. Maybe letting the noco gradually restore the sulfation and stratification a little more. Ideally from the battery health viewpoint we should have one battery on the bench on a maintainer and one in the truck and switch them out every three or 4 months. I will myself just use my noco on the truck for 5 to 7 days every three months or when the dome light does not illuminate.

 

[ZABSMAV]

Symptoms sound like Deep Sleep.

414-01 Battery, Mounting and Cables Description and Operation
For HEV/BEV vehicles, a DC/DC converter control module is not dimensioned to support all loads in all situations.
In some situations, energy has to be drawn from the battery.

Vehicles built before 2025 have a partial load shed strategy.
Vehicles built after 2025 contain the full load shed strategy.

During cold conditions, the charge acceptance of the battery is very low which increases the time needed to recharge the battery. This means that it can take up to several hours of driving before the battery is recharged

Battery Load Shed - Load Shed Charts
https://www.fordedgeforum.com/topic...stem-pts-whats-new-item-on-battery-load-shed/

What that said: "For HEV/BEV vehicles, a DC/DC converter control module is not dimensioned to support all loads in all situations."

Translated for laymen: "Ford's incompetent engineers improperly designed the means by which the 12 volt battery is being recharged, leading to that battery's demise, thus the deep sleep problem occurs."

 

[tcant]

It’s ridiculous for Ford to wait this long to correct a 12V battery parasitic drain that is so obviously a design issue and then be so reluctant to remedy the situation by preemptively replacing the 12V batteries. Come on Ford why is President Trump protecting you with tariffs?

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