2024 Lariat hybrid sleep mode

[svogt302]

Ok and the problems start, took delivery of my trucklett in early June of 24 sometime around September it sent me the message in Ford Pass that my vehicle has gone into deep sleep, take it for a drive and don’t use the A/C well I live in south Florida not happening, I reset it with the 5 time high beam and 3 time brake pedal maneuver, then in November got it again, then twice in December and now about 8 times in the last 2 weeks, made an appointment with the dealer and showed up bright and early, first thing the service writer tells me is that it’s a normal condition and it should go away but let’s check, he begins by opening the hood I said what r u doing he said I want to see what kind of battery you have, I said battery is under rear seat and it’s a lead acid, he said no there are no lead acid batteries in these they are all AGM, I let out another chuckle, ohhhh lord
He then proceeded to bring the truck into the shop, comes out and says battery tests good after 15 minutes and says there is nothing they can do because Ford doesn’t make an AGM BATTERY IN SIZE 24, and we don’t even have a part number, you just told me 10 minutes ago that they are all AGM, so my next question is what are they putting in the 2025 hybrids….. i know they are all AGM IN THE 25s, I hope Ford is reading this as I am installing an on board battery maintainer and as far as the dealer he said keep bringing it back or until they send you a Recall, FYI I WENT OUT TO TRUCK AT DEALER AND GOT A MESSAGE ON PHONE truck IS IN SLEEP MODE after they said they re- set it, I hope Ford is reading this one ohhhhh wellll give me a call Ford Zone I’d be glad to discuss…

YES it:s annoying but probably happens to everyone with a Mav Hybrid but in most cases it always starts & won't leave you stranded. . I regularly trickle charge mine in NJ's winter climate & just got used to it.
Ford does have as an H4 AGM Battery used in the Corsair & the '25 Maverick but Amazon has less expensive ones.

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[oysterville]

thanks!

Just don't do that if the battery isn't fully charged.

 

[Cuban Al]

You can have fun resetting the BMS all you want because it makes you feel like you're taking action. But it won't make any difference. Two different hybrids and three years later, I have tried it all. Ford (so far )doesn't have a clue. So many of us are just inclined or hopelessly destined to just fix it ourselves. That mentality and drive has worked for me more often than not in my life. But when it comes to these computers on wheels, it's genuine futility.
And btw, the Ford rep no longer trolls this forum. And for good reason, he/she was worthless.

Agree 100%. These electronics are worthless.

 

[Currituckkid]

Don't reset your BMS unless the battery is fully charged. By doing the reset when it's not charged you are telling the BMS that it is.

Do that enough times and you'll have a dead battery.

I have 2024 that I bought in October 2024. How is this battery issue being manifested. So far, I am not aware of any battery issue with my Lariat Hybrid.

 

[OleFordGuy]

I have 2024 that I bought in October 2024. How is this battery issue being manifested. So far, I am not aware of any battery issue with my Lariat Hybrid.

In a nut shell, bad battery related software programming from ford and a cheap underpowered battery. Search the forum for terms like deep sleep, dead battery, won't start, died going down the road, battery maintainer, jump start packs, etc. You'll find and learn a lot. It's been an issue with the hybrid powertrain since the truck was introduced back in 2022. The strange thing about it is many of the hybrids have been relatively trouble free and many have been extremely trouble prone from the battery related issues.

 

[Cuban Al]

I have 2024 that I bought in October 2024. How is this battery issue being manifested. So far, I am not aware of any battery issue with my Lariat Hybrid.

I got mine in March 2024 and the first incident was at 5 months and about 3500 miles. Good luck.

 

[Matso]

It does kind of seem like this thing all comes down to luck as a hybrid owner. Either you'll be dealing with the issue or you won't. So far I'm 0 for 2.

 

[Rcrew]

1) my ‘24 lariat hybrid deep sleeps are becoming more frequent.

2) if charging using the under hood contact points I didn’t think a BMS reset was necessary?

3) my response to deep sleeps has been 24-48 hours on smart charger.

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