(SOLVED) Replaced OEM 12V battery. Battery Service code still showing after resetting BMS & ForScan programming. 2022 Maverick Ecoboost

[MexicanMaverick]

Hello everyone. I'm trying to fix this issue without redeeming the 12V Battery Recall Ford has put out since I will be out $200 (I didn't know about the recall until after I replaced the battery).

My 2022 Ecoboost's original battery lasted a little under 4 years without issues but after switching to Walmart's EverStart Platinum AGM battery (Group H6, 12V, 760 CCA) I am getting a Battery Service Needed alert on the dash and a couple of DTCs on ForScan (I can post these if asked).

Things I've done post replacement:
1. Reset BMS manually (Key to on position, 5 hazard light flashes, 3 brake pedal presses. Confirmed via battery symbol flashing) post replacement. Sat overnight.

(Didn't fix issue)

2. Charged battery (portable jump start) and reset BMS. Sat overnight.

(Didn't fix issue)

3. Changed "Battery Level State of Charge" from 80% to 95% on ForScan (Battery type was showing AGM already), Cleared codes/DTCs. Drove 30 miles. Charged battery. Reset BMS manually. Sat overnight.

(Didn't fix issue)

Has anyone dealt with the same situation and found a fix? The truck starts every time but now is experiecing technical difficulties like not being able to close doors via Driver Side Door, Key Fob has lost range, AutoStart/Stop disabled (don't use anyway).

Update 1/12/2026 / Solution:

Yesterday the battery was at it's worst point, even shutting down on me as I warmed up the engine before driving off. I think I fixed it though.

I drove for 30 miles today without the repair light/message showing and my voltmeter on cigarettes lighter USB hub shows a steady 14.5V instead of the 11V-12.5V range it usually was at driving.

Here's what I did:

1. I accidently snapped the 12V negative terminal clasp bolt (that tightens the clasp to the negative side post) so I went to AutoZone to buy a replacement. I was trying to tighten it because I was suspecting a loose connection causing resistance (and low voltage in turn). It was pretty loose upon initial inspection. Photo attached:



2. AutoZone Battery Tightening bolt & nut didn't secure the clasp (didn't tighten it at all) so I moved the OEM tightening bolt & nut on the positive post to the negative post. I made sure the clasp was flush (as far down touching the battery as possible) and tightened it securely.

(I'm sure the positive clasp isn't secure but it has other terminals and nuts holding it down, so I'll leave it be until I find a replacement).

3. In the process I did remove whatever this is (photo attached) and all the nuts associated to it in the process. I noticed there was a thread and nut burnt but I didn't seem to affect anything (photo also attached).

P.S. I also disconnected and reconnected whatever is on the negative terminal clasp (voltmeter for BMS?).

Hope this helps anyone.

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[HeyBales]

Just want to confirm because you were good and specific on the sat overnight for the BMS Relearn - sat locked overnight?

Sounds like the system thinks there is a low battery.

The BMS (Actually BS Battery Sensor) Reset is just Zeroing out some tracking PID's and the battery age in days.

And the Relearn is probably not as important since your manual under Maintenance for Battery Spec's probably matches the online manual - same sized battery as OEM, or change the specs in the system.

Spec's is more than Type - catch the other PIDs there about AmpHours, CCA, ect.

And 95% isn't a valid value in the Ford SOC scale - it maxes at 85%, 80% is when it goes to float charge - and EB owners don't have issue with batteries, so I wouldn't mess with it. Maybe 82% - but you really should have a float charge space in there.

Once you get these done - do a live read of the Ford SOC% scale after a few hours of sitting.
Also search for a PID called TCU SOC or SOH, see what it's value is.

Here's those other battery spec PIDs. The upper are the option PIDs to get selected (not the status one), the lower are the tracking PIDs the BS Reset Zeros out (battery age not showing).

 

[Old Young Man]

Hello everyone. I'm trying to fix this issue without redeeming the 12V Battery Recall Ford has put out since I will be out $200 (I didn't know about the recall until after I replaced the battery).

My 2022 Ecoboost's original battery lasted a little under 4 years without issues but after switching to Walmart's EverStart Platinum AGM battery (Group H6, 12V, 760 CCA) I am getting a Battery Service Needed alert on the dash and a couple of DTCs on ForScan (I can post these if asked).

Things I've done post replacement:
1. Reset BMS manually (Key to on position, 5 hazard light flashes, 3 brake pedal presses. Confirmed via battery symbol flashing) post replacement. Sat overnight.

(Didn't fix issue)

2. Charged battery (portable jump start) and reset BMS. Sat overnight.

(Didn't fix issue)

3. Changed "Battery Level State of Charge" from 80% to 95% on ForScan (Battery type was showing AGM already), Cleared codes/DTCs. Drove 30 miles. Charged battery. Reset BMS manually. Sat overnight.

(Didn't fix issue)

Has anyone dealt with the same situation and found a fix? The truck starts every time but now is experiecing technical difficulties like not being able to close doors via Driver Side Door, Key Fob has lost range, AutoStart/Stop disabled (don't use anyway).

5 hazard light flashes? Thought it was 5 high beam flashes.
I don’t know for sure, just what I read somewhere.

 

[rk06382]

Welcome to the Maverick Truck Club forum from Alaska!

Please post pictures of your Maverick.

I don't have an answer for you but welcome to the forum.

 

[MexicanMaverick]

5 hazard light flashes? Thought it was 5 high beam flashes.
I don’t know for sure, just what I read somewhere.

You're correct. I preformed it the right way but mistyped it on my post. Thank you, I fixed it.

 

[MexicanMaverick]

Just want to confirm because you were good and specific on the sat overnight for the BMS Relearn - sat locked overnight?

Sounds like the system thinks there is a low battery.

The BMS (Actually BS Battery Sensor) Reset is just Zeroing out some tracking PID's and the battery age in days.

And the Relearn is probably not as important since your manual under Maintenance for Battery Spec's probably matches the online manual - same sized battery as OEM, or change the specs in the system.

Spec's is more than Type - catch the other PIDs there about AmpHours, CCA, ect.

And 95% isn't a valid value in the Ford SOC scale - it maxes at 85%, 80% is when it goes to float charge - and EB owners don't have issue with batteries, so I wouldn't mess with it. Maybe 82% - but you really should have a float charge space in there.

Once you get these done - do a live read of the Ford SOC% scale after a few hours of sitting.
Also search for a PID called TCU SOC or SOH, see what it's value is.

Here's those other battery spec PIDs. The upper are the option PIDs to get selected (not the status one), the lower are the tracking PIDs the BS Reset Zeros out (battery age not showing).

Thanks for the info and suggestions. I ended up fixing the issue before I got to read all these updates/replies.

To reply specifically to your SOC level suggestion; 95% SOC Level is more ideal because of how the BMS functions in these vehicles. The stock 80% configuration the engineers set prioritizes fuel economy but the recommended 95% I've set prioritizes battery health.

80% config results in deep sleep issues and sulfation.
Definitely do not put 100% though (to anyone else reading).

 

[HeyBales]

I'll be curious if you ever read a Ford SOC scale value above 85% in Forscan, like after a long drive.
Please share if you do, since the EB could indeed do things differently from the hybrid for charging.
It obviously must since it's rare to hear of an EB battery issue.

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