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

[mav47]

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!

Sponsored

 

[CurtisB]

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!

And there we have it folks. I installed an AGM battery in May of last year. I don't have forscan so I didn't get to reset the charging level. I still get sleep messages occasionally but the battery charges back up. Waiting for Ford to come through with the sofware fix. If they don't do it right, I'm driving down to Carlsbad..................LoL. I think I met you at the Maverick meeting in Huntington Beach!

 

[Kenv24]

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?

 

[mav47]

And there we have it folks. I installed an AGM battery in May of last year. I don't have forscan so I didn't get to reset the charging level. I still get sleep messages occasionally but the battery charges back up. Waiting for Ford to come through with the sofware fix. If they don't do it right, I'm driving down to Carlsbad..................LoL. I think I met you at the Maverick meeting in Huntington Beach!

@CurtisB

I've never been at any Maverick meeting, so you likely are thinking of someone else! I've noticed at least one other local Velocity Blue Maverick Hybrid in Carlsbad, that might be the person you're thinking of

Either way, important is this: since you still get occasional deep sleeps and I get none it indicates that raising SOC to 100% is indeed part of the fix!

Let me know if I can be of help.

@Kenv24

I can only give you my experience with my 2022 model. However, as far as I know there are no substantial differences between '22, '23 and '24 as related to battery, and DC-DC converter, etc. My guess is that they're all more or less suffering from the same issue.

Cheers!

 

[DadsLariat]

My 2024 Lariat Hybrid got a few Battery Saver and Remote Functions Disabled during the first 6 months of ownership.Then it was a regular occurace for 2 months; 2-3 times a week. I replaced my battery with a Walmart EverStart H5 AGM battery, nothing else, no Forscan. Went thru a whole wisconsin winter, below zero nights, daytime highs in single digits. Not one alert, remote start worked every time I needed it. Hope this reliability continues.

 

[A Sturdy Beast]

One year ago I got tired of the seemingly random deep [...]

For me, the fix proved to be:

1) Install a Group 140R AGM battery

2) Raise SOC setting in Forscan to 100%

Cheers!

That’s great to hear.

I have the deep sleep issue with my ‘23 XL hybrid. I tried fixing it with a Duralast Gold (flooded) and 3 months later deep sleep returned. Last month I bought a H4 AGM Everlast from Wal-Mart. I will install it in the next week or so.

Otherwise, the truck has been great. The deep sleep issue is the only inconvenience I have with my Maverick. My only buyer’s remorse is that I wish I had bought two Mavericks at the 2022 price.

 

[CurtisB]

That’s great to hear.

I have the deep sleep issue with my ‘23 XL hybrid. I tried fixing it with a Duralast Gold (flooded) and 3 months later deep sleep returned. Last month I bought a H4 AGM Everlast from Wal-Mart. I will install it in the next week or so.

Otherwise, the truck has been great. The deep sleep issue is the only inconvenience I have with my Maverick. My only buyer’s remorse is that I wish I had bought two Mavericks at the 2022 price.

So, when I got the truck new, the battery that came with the truck went dead within 4 weeks. I went and bought the same battery you did. It died within 6 weeks. Completely drained. I purchased an AGM battery in May of last year and I am still driving. No dead battery. I do get sleep messages, but I expected this due to not being able to go into forscan and up the charge leve. The truck killed a brand new Duralast Gold within 6 weeks!

 

[ZABSMAV]

I wish people would stop calling "deep sleep" problem a "feature". It is straight up a design defect. There is no reason that a person should not be able to leave their vehicle parked for several weeks, or a month, and return and have it start right up. Cars have been doing that for decades. No reason one should be notified their vehicle is having the deep sleep problem immediately after a long drive. No reason to have the notification 3 or 4 times per day. It is rediculous that Ford has let this problem go unfixed throughout the 2022-2025 model years. We are now 2 weeks to go in quarter one, and still no official announcement on the fix to this ongoing problem. If Ford misses this self-announced promised deadline for releasing a recall on the deep sleep problem, it will be further evidence that their engineers apparently don't know what they are doing.

 

[4sambos]

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!

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.

 

[boxster03]

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

 

[mav47]

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.

Also: @Mervin the Maverick


No worries, that H4/Group 140R AGM fits just fine.

Remember that Ford specifies the Group 99R flooded battery for the 22-24 Maverick Hybrid, so that's what Amazon thinks is the only correct one.

Simply installing this H4 /Group 140R AGM should certainly get rid of the vast majority of your deep sleep / low battery warnings, and if you have access to Forscan, then bumping up the SOC from 80 to 100% should fix it completely, like it did for me.

As per @DadsLariat (and others) you could also install the larger H5 AGM, but if I recall now you have to modify a bracket in the battery compartment to make it fit. The H5 has about 20% more reserve capacity (RC) than the H4, which is possibly the reason why even without SOC tweaks in Forscan some (not all!) owners report the deep sleep problem also completely gone with just the H5 battery installed. But that's just an educated guess from my side.

I do feel that bumping SOC to 100% is likely the best solution for ultimate longevity as AGMs like to be charged to 100% regularly. But I might be overthinking this, as we often tend to do: it may prove to be just fine.

Cheers!

 

[TheSEARCH]

What does SOC stand for?

Maybe you should let ford know. Seriously. Setting to 100 percent seems logical. BUT I doubt ford wants to be on the hook for new AGM batteries,.

Beside the cable hookup from laptop to OBD connection does Forscan cost money? Never looked into it,

 

[Hebrews12v2]

What does SOC stand for?

Maybe you should let ford know. Seriously. Setting to 100 percent seems logical. BUT I doubt ford wants to be on the hook for new AGM batteries,.

Beside the cable hookup from laptop to OBD connection does Forscan cost money? Never looked into it,

SOC = "State of Charge"

 

[EONR24]

Making this forscan change below to the "PowerPoint Timeout" should also conserve battery voltage after turning the vehicle off. From the factory, Power is supplied to the 12v outlets and other parts of the car for 1 hour and 15 minutes AFTER turning the vehicle off. Reducing this will conserve battery voltage.
Go to the BCM (EZ MODE)
Make sure PowerPoint Timeout is enabled.
Adjust PowerPoint timeout to (300s) This is equal to 5 minutes.

You can set it to anything you would like but reducing this from the factory setting of 4500s will likely conserve battery voltage. Doing a BMS reset after upgrading to an AGM battery is very important to do as well.

There are other settings in the BCM and BMS that likely could help but I don't have a hybrid to test these changes on.

 

[EONR24]

What does SOC stand for?

Maybe you should let ford know. Seriously. Setting to 100 percent seems logical. BUT I doubt ford wants to be on the hook for new AGM batteries,.

Beside the cable hookup from laptop to OBD connection does Forscan cost money? Never looked into it,

Ford Motorcraft Flooded batteries are junk and even other Hybrids from other brands such as Hyundai have had deep sleep problems as well. Even the fully electric FORD MACH E has had a ton of problems with deep sleep mode. Regarding Forscan. You need a windows laptop, the correct OBD cable and the software itself is free if you get a 2 month license. You can get multiple 2 month licenses as well. You can buy a 1 year license for forscan and that costs $10.

Sponsored