First Deep Sleep issue encountered

[Pop2020]

Had my 2022 Lariat go into "deep sleep" mode yesterday afternoon at about 48,700 miles and 2 years and 5 months of ownership. Drove it in the morning on a couple of short 10-minute trips, parked it around noon and it was in DSM at 1:15pm. Had to jump-start it to get it going. Four other short drives (5-10 minutes) the rest of the day after getting it out of DSM. Check engine light was on for the rest of the day but did not come on this morning. Will wait and see what happens.

I hadn't followed this issue in a while. Any other "late bloomers" out there?

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[bighap]

Welcome to the club! You did much better most.

 

[Waterick]

Had my 2022 Lariat go into "deep sleep" mode yesterday afternoon at about 48,700 miles and 2 years and 5 months of ownership. Drove it in the morning on a couple of short 10-minute trips, parked it around noon and it was in DSM at 1:15pm. Had to jump-start it to get it going. Four other short drives (5-10 minutes) the rest of the day after getting it out of DSM. Check engine light was on for the rest of the day but did not come on this morning. Will wait and see what happens.

I hadn't followed this issue in a while. Any other "late bloomers" out there?

You did Ford a favor and drove it over 12k miles per year. They would have to replace it at their expense otherwise. At least now you can get an AGM battery on your own and maybe not deal with this issue again for a while. Although, if you keep it as long as you planned (a decade, IIRC), you will probably see the battery replacement another time too.

 

[Pop2020]

You did Ford a favor and drove it over 12k miles per year. They would have to replace it at their expense otherwise. At least now you can get an AGM battery on your own and maybe not deal with this issue again for a while. Although, if you keep it as long as you planned (a decade, IIRC), you will probably see the battery replacement another time too.

I haven't been here as frequently as I used to be. Is the general consensus that an AGM battery will help and/or resolve the issue? Is this a sign of wear on the OEM battery and an "end of life" kind of thing for it?

I'll search here some more for sure if it happens again.

 

[Waterick]

I haven't been here as frequently as I used to be. Is the general consensus that an AGM battery will help and/or resolve the issue? Is this a sign of wear on the OEM battery and an "end of life" kind of thing for it?

I'll search here some more for sure if it happens again.

An AGM is not really a cure-all for this problem but, it does withstand Ford's low state of charge Battery Management System better. The 2026 models now come with it standard. With this, you may not see this problem recur. The consensus here on MTC seems to be that an AGM just delays the problem longer although some think it has solved theirs. To answer your questions: Yes the AGM will be better, resolve? Maybe. I suspect your OEM battery is nearing its end of life.
Edit: Meant to say 2025 models now have the AGM, suspect going forward, that will continue.

 

[Pop2020]

Is this particular to the Maverick or is it an issue with other Ford hybrids? Hybrids have been around a while now, so if it's particular to the Maverick I gotta wonder if it's something with trying to get the price point down.

I had a Honda Ridgeline for just over 13 1/2 years and 215k+ miles. Loved that thing and had no issues with it. I would have bought another one in a heartbeat but at the time the Ridgeline would have cost me $8000 more and wasn't a hybrid, so I gambled on a Ford first-year production vehicle. I'd had an '86 Tempo and '96 Windstar that were both good vehicles, so that figured into it as well.

 

[HeyBales]

Had my 2022 Lariat go into "deep sleep" mode yesterday afternoon at about 48,700 miles and 2 years and 5 months of ownership. Drove it in the morning on a couple of short 10-minute trips, parked it around noon and it was in DSM at 1:15pm. Had to jump-start it to get it going. Four other short drives (5-10 minutes) the rest of the day after getting it out of DSM. Check engine light was on for the rest of the day but did not come on this morning. Will wait and see what happens.

I hadn't followed this issue in a while. Any other "late bloomers" out there?

I'm guessing you got notice in Fordpass app about DSM.
It's informing you the remote functions are disabled - because it disabled the modem after that final alert.

That should have assisted in keeping the battery with enough voltage to start it - that's the point of DSM, and the battery saver functions - disable draws so the battery can start the truck.

The fact you had to jump start it sounds like something else actually happened, you received the DSM as the voltage was dropping fast and then it ended up drained.
The fact 4 short drives was enough to revive it past that point - doesn't sound like you aren't dealing with the normal undercharged issue - or you are, and this event made it easier to drain the battery.

Happen to use the AC that morning for the drives - or humid enough it might have turned on automatically?

Since you had a battery drain, and this is intermittent obviously - Ford does have an SSM for it.
They'll charge up the battery - make sure the drain didn't ruin it with load test.
Apply a software update to the AC unit module.

They won't even bother trying to find any intermittent drain - they'll assume the ACCM was the reason.

At least you'll get a recharge out of it. Out of warranty for 3 yrs, but should still be done.

 

[23grayXLT84]

They should call it light sleep. Would sound better

 

[HeyBales]

They should call it light sleep. Would sound better

That would be good for the 75 min while some modules are turning off, but not all of them, or not done yet but waking up clicking.
Since Sleep Mode is after the 75 min max when everything that should be off is off - Light Sleep mode tossing & turning is perfect.

 

[Chopperbobc]

Does anyone know why the hybrid 12 volt battery is engineered to only charge to 80 per cent ...... I think that a lot of the problems could be solved with a 95 or 100 per cent....

 

[HeyBales]

Does anyone know why the hybrid 12 volt battery is engineered to only charge to 80 per cent ...... I think that a lot of the problems could be solved with a 95 or 100 per cent....

Misunderstanding of what that 80% is.

That's 80% out of 85% fully charged - in Ford's special SOC scale. That means 94% charged.
Several posts have shown fully charged battery is given 85%.

And the hybrid system does actually keep charging above 80% - but at float charge - abouts 0.5 Amps - which is correct for an almost fully charged battery.
Especially when you shouldn't overcharge one sitting in passenger space, causing off-gassing.

Oh - the EB does the same thing from the sounds of it.
Only 1 person has posted Voltage readings I've seen, but it appeared the same goal.

 

[MakinDoForNow]

Does anyone know why the hybrid 12 volt battery is engineered to only charge to 80 per cent ...... I think that a lot of the problems could be solved with a 95 or 100 per cent....

Like any battery, charge to a certain % then float charge to 100% ,(takes longer than the bulk charge). I periodically get mine to 100% with my noco g5. Necessary because of regular discharging and sulfation.

 

[MaverickZach]

I had deep sleep on the original 12 volt battery. Never had to jump it. Even after a long highway drive were the battery should be 100% it still went to sleep within 1hr. I've been lurking on these forums and saw others having similar issues. That's how I heard about the SSM for AC electrical drain. I suspect there is something draining it.

I got lucky. I was just about to expire under the 36month/36k mile bumper warranty so I brought it in for that. Dealership tested battery and found a few troubled cells. They replaced with the new 2025/26 AGM. After the change so far no deep sleep. fingers cross it doesn't happen. I do turn off the HVAC once I'm parked just in case that AC drain is happening. It's possible I get deep sleep in the future but we'll see.

 

[MakinDoForNow]

I had deep sleep on the original 12 volt battery. Never had to jump it. Even after a long highway drive were the battery should be 100% it still went to sleep within 1hr. I've been lurking on these forums and saw others having similar issues. That's how I heard about the SSM for AC electrical drain. I suspect there is something draining it.

I got lucky. I was just about to expire under the 36month/36k mile bumper warranty so I brought it in for that. Dealership tested battery and found a few troubled cells. They replaced with the new 2025/26 AGM. After the change so far no deep sleep. fingers cross it doesn't happen. I do turn off the HVAC once I'm parked just in case that AC drain is happening. It's possible I get deep sleep in the future but we'll see.

Sounds like you had battery save active not deep sleep. No lights = Battery save. Will not start with key = deep sleep

 

[HoiToid]

I see that MakinDoForNow has a Noco genius5 tricklecharger; is that about the best one? I see that the Ultima 400+ looks good and has a screen readout that appears useful whereas the Noco genius5 does not. Anyone care to share their opinion on which trickle charger to invest in?
Thanks

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