Deep Sleep FIX - Maverick Hybrid 12V battery - One Year Update

[MakinDoForNow]

well, I put a charge on my battery today and it was up to 12.6 V before I took it off. Let’s see how this goes. Reset the BCM.

Lock the truck overnight so the battery learn procedure will run tonight. That helps the system know what a fully charged battery voltage is

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[Tvin87]

well, what did you end up doing and how is it going? I want to do this to my truck. And I was told I can leave it charging while it’s running because it won’t overload the battery. What’s your experience?

After replacing the stock battery with an AGM I haven't had a deep sleep issue since so I scrapped the solar idea as it wasn't necessary to me anymore.

 

[Mark1]

Whybrid would anyone buy a battery with this issue while under warranty. That's nuts! Ford loves you.

Just plan to buy a new battery every few months - add the $300 cost to your operating budget

 

[Dcooke35]

One year ago I got tired of the seemingly random deep sleep messages from my 2022 Maverick Hybrid Lariat, interior lights not working, etc.. I played a bit with the State of Charge (SOC) setting in Forscan (which is the only thing you can tweak), but that didn't seem to make any difference. I'd get deep sleep reports (indicating a low battery voltage) sometimes right after my 40 mile commute.

Upon reading reports on this forum, and since I have a professional background in vehicle electrical systems, I concluded that a 12V AGM battery could be the solution, I figured out that the Group 140R battery type is a drop in for the Maverick Hybrid, and I purchased and installed that UPlus Group 140R AGM battery which I think was $135 on Amazon in March 2024.

Here's a my original writeup about it: https://www.mavericktruckclub.com/f...ms-a-bit-high-while-driving.43755/post-771567

Besides the AGM install there's one more thing: I had raised the SOC setting in Forscan to 100% while trying to see if that would improve this issue well before that AGM install, and I simply left it there with the new AGM.

And after one of the taillight recalls was performed on the truck (which overwrites the BCM module with an updated version and reverts SOC back to 80%) I then raised it again to 100% (and again turned off double honk, turned on DRL taillights, etc. etc.). My reasoning: AGMs like to be charged to 100% regularly.

No other tweaks were done: Fordpass is connected and works fine, no trickle chargers were ever used. I just used the truck throughout the year.

ONE YEAR UPDATE:

I put about 25k miles on the truck since installing that AGM battery 12 months ago.

Essentially I have had ZERO (!!) deep sleep messages since then. The interior lights always work when entering, everything simply works as expected. Every day throughout summer and winter.

There was ONE deep sleep event that occurred about 11 months ago in April 2024, when we were on a family vacation abroad and the truck was parked for close to 3 weeks. After 16 days I got a message in Fordpass that the truck had entered deep sleep, which is exactly what this deep sleep feature is designed for as it prevents onboard systems from draining the battery so far that it might not start. This is normal.

It appears there are still many owners struggling with this 12V battery/deep sleep issue on their 2022-2024 Hybrids: so many messages on this forum are talking about investigating battery drain, connecting trickle chargers, owners are told to drive longer distances (?), people are pulling fuse 11, so disconnecting Fordpass connectivity, various battery replacements (with OEM flooded ones again!) most don't end up solving the issue. Overall: lots of hassles. I read of owners that actually SOLD their Maverick Hybrid because of this, and there are people that won't buy a Hybrid because of this problem.

At this point, based on my experience, I'd say that many might be overthinking this.


For me, the fix proved to be:

1) Install a Group 140R AGM battery

2) Raise SOC setting in Forscan to 100%



Cheers!

I wonder if not going from 80% to 100% on the SOC setting would still fix the problem? Basically just getting a new AGM battery.

 

[Cruzer]

Mav47...I thought I read on here that the Deep Sleep issue was only for 22's and 23's. Do the 24's see it also?

Yes, 2024s have this issue, mine does.

 

[mav47]

I wonder if not going from 80% to 100% on the SOC setting would still fix the problem? Basically just getting a new AGM battery.

@Dcooke35

My own 2022 truck has the new $135 AGM and I updated the SOC to 100%. I put on 28,000 miles since the AGM install 15 months ago. I have had essentially zero deep-sleeps. So on mine the issue is completely resolved.

I never drove the truck with the AGM and SOC set to just 80% though, mine was set to 100% from the beginning.

I cannot speak for others, but based on my (extensive) reading on this issue it appears that people that only install an AGM and don't touch the SOC setting still have occasional low voltage/deep sleep events come up.

But in my opinion: the much reduced frequency of these events totally warrants installing a $135 (-ish) AGM battery by itself. For most it makes FordPass usable again, including remote start, tire monitoring when parked, etc. An occasional low voltage warning is really no big deal in my opinion as long as it doesn't happen that often.

Cheers!

 

[Builder]

Ya those 4 PIDs are Ah's it appears from the calcs, so very slow changing. One look and not really useful again for awhile.

You should find the 12V battery Amps incoming if not a watched PID - see if you notice the same high 7-9 amps for maybe a couple minutes, 4-6 for several more, and then staying around 0-2 thereafter for a drive.
No wonder a 4.5 hr drive needed to see notable difference!

Finally found the incoming 12v battery amps PID and I can confirm that you are spot on. Starts out at 7-9 for a couple minutes then drops down to 5-6 for a few minutes then drops again to 3-4 after about ten minutes and settles at 0-2 after another fifteen to twenty minutes. It’s no wonder that we have to drive for several hours to truly charge the 12v battery at these stupidly low recharge rates which drop quickly over a short period post start!

 

[HeyBales]

Finally found the incoming 12v battery amps PID and I can confirm that you are spot on. Starts out at 7-9 for a couple minutes then drops down to 5-6 for a few minutes then drops again to 3-4 after about ten minutes and settles at 0-2 after another fifteen to twenty minutes. It’s no wonder that we have to drive for several hours to truly charge the 12v battery at these stupidly low recharge rates which drop quickly over a short period post start!

I can't recall where I posted these, so sorry to any if a duplicate.

It's like an engineer saw this good tested advice, and misread the time scale.
I guess it's good they caught the need to do the values x6 for all the cells!

https://batteryuniversity.com/article/bu-403-charging-lead-acid

 

[bishop0114]

Anyone know what battery level triggers the deep sleep?

 

[Master Blaster]

Anyone know what battery level triggers the deep sleep?

I'm pretty sure it starts just below 12.0V, or about 45% left.

 

[Shelbyv8]

Hi when I click on your link to Amazon it states that battery won’t fit my 2023 Hybrid? Thanks for your help. This deep sleep battery issue is pathetic! My FordPass App is useless because of it.

Yes it does say that, but it is a direct drop in.

 

[HeyBales]

Just FYI regarding Ford's value they call SOC%. It's not the industry definition.

85% is a full charge for their value.
12.75 V per multimeter.
So 80% is likely when it's supposed to switch to float charge, nothing to do with fully charged level. Just lowering the charge to protect the battery from overcharging.
Who knows what craziness made them call full charge 85%.

Their PID only displays tenths, so rounded to 12.8 V.

Fully charge a battery.
Install Negative cable.
Have OBD adapter in and Forscan Lite ready to go.
Turn key to Acc, get Forscan connected.
Read the PID for 12V battery SOC%.
85% is max.

Or in my case - take MM reading at dealership after new battery. Drive home and catch this.

I'd warrant whatever the change to 100% causes - changing to 85% would do the same.
Considering none of the other PIDS for battery like that are actually used, I'd be curious if that max rate really is nothing more than an orphan control item.
Do the scanner PID values for SOC% actually go above 85%, do the amps actually not drop to 1 Amp pretty quickly?
Sadly it seems those that have changed that SOC value have never reported what is shown for the other live values.

 

[MakinDoForNow]

Just FYI regarding Ford's value they call SOC%. It's not the industry definition.

85% is a full charge for their value.
12.75 V per multimeter.
So 80% is likely when it's supposed to switch to float charge, nothing to do with fully charged level. Just lowering the charge to protect the battery from overcharging.
Who knows what craziness made them call full charge 85%.

Their PID only displays tenths, so rounded to 12.8 V.

Fully charge a battery.
Install Negative cable.
Have OBD adapter in and Forscan Lite ready to go.
Turn key to Acc, get Forscan connected.
Read the PID for 12V battery SOC%.
85% is max.

Or in my case - take MM reading at dealership after new battery. Drive home and catch this.

I'd warrant whatever the change to 100% causes - changing to 85% would do the same.
Considering none of the other PIDS for battery like that are actually used, I'd be curious if that max rate really is nothing more than an orphan control item.
Do the scanner PID values for SOC% actually go above 85%, do the amps actually not drop to 1 Amp pretty quickly?
Sadly it seems those that have changed the value have never reported what is shown for values.

When I get tired, maybe soon, of putting my noco g5 on perhaps it's time to test a diy dc maintainer (in parallel?) with the ford BMS that runs at least while truck is in ready status. (Would I have to have only one operational at time?) Other possibility would be a second battery to be electrically switched so you could have one fully charged resting for a week or so and then being used while other is topped off?

 

[Codestar7]

One year ago I got tired of the seemingly random deep sleep messages from my 2022 Maverick Hybrid Lariat, interior lights not working, etc.. I played a bit with the State of Charge (SOC) setting in Forscan (which is the only thing you can tweak), but that didn't seem to make any difference. I'd get deep sleep reports (indicating a low battery voltage) sometimes right after my 40 mile commute.

Upon reading reports on this forum, and since I have a professional background in vehicle electrical systems, I concluded that a 12V AGM battery could be the solution, I figured out that the Group 140R battery type is a drop in for the Maverick Hybrid, and I purchased and installed that UPlus Group 140R AGM battery which I think was $135 on Amazon in March 2024.

Here's a my original writeup about it: https://www.mavericktruckclub.com/f...ms-a-bit-high-while-driving.43755/post-771567

Besides the AGM install there's one more thing: I had raised the SOC setting in Forscan to 100% while trying to see if that would improve this issue well before that AGM install, and I simply left it there with the new AGM.

And after one of the taillight recalls was performed on the truck (which overwrites the BCM module with an updated version and reverts SOC back to 80%) I then raised it again to 100% (and again turned off double honk, turned on DRL taillights, etc. etc.). My reasoning: AGMs like to be charged to 100% regularly.

No other tweaks were done: Fordpass is connected and works fine, no trickle chargers were ever used. I just used the truck throughout the year.

ONE YEAR UPDATE:

I put about 25k miles on the truck since installing that AGM battery 12 months ago.

Essentially I have had ZERO (!!) deep sleep messages since then. The interior lights always work when entering, everything simply works as expected. Every day throughout summer and winter.

There was ONE deep sleep event that occurred about 11 months ago in April 2024, when we were on a family vacation abroad and the truck was parked for close to 3 weeks. After 16 days I got a message in Fordpass that the truck had entered deep sleep, which is exactly what this deep sleep feature is designed for as it prevents onboard systems from draining the battery so far that it might not start. This is normal.

It appears there are still many owners struggling with this 12V battery/deep sleep issue on their 2022-2024 Hybrids: so many messages on this forum are talking about investigating battery drain, connecting trickle chargers, owners are told to drive longer distances (?), people are pulling fuse 11, so disconnecting Fordpass connectivity, various battery replacements (with OEM flooded ones again!) most don't end up solving the issue. Overall: lots of hassles. I read of owners that actually SOLD their Maverick Hybrid because of this, and there are people that won't buy a Hybrid because of this problem.

At this point, based on my experience, I'd say that many might be overthinking this.


For me, the fix proved to be:

1) Install a Group 140R AGM battery

2) Raise SOC setting in Forscan to 100%



Cheers!

Good synopsis!

 

[Darryl]

Good synopsis!

It is indeed a complicated issue. The update Ford has for their air condition control module fixes most of them. However there are a few that will drain a battery overnight randomly. They may go several days with no problem. Then all of a sudden the battery is stoned dead the next morning. Those are the difficult ones. But the AGM battery helps most applications. And the update fixes even more of them. But the stubborn hold out challenge even the best of us technicians

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