SSM 53801: 2022-2025 Maverick Hybrid 12V Battery Drain Issue Update Fix Released!

[rknrbt]

Unfortunately the recall was only for the EcoBoost. Ford had another SSM That was supposed to address the low battery warning also. I will try to find it and post it later. I think in those cases the battery didn't actually die. But it would give a false warning. So you may have both issues. Finally, my field service engineer recommended that I disconnect the battery and check the voltage over several days to see if the battery had an internal condition causing it to lose voltage even if the car was not drawing any current. He said that there were some cases where the batteries themselves were also defective. But it would not show up on a normal battery load test. I will try to find that other SSM and posted hopefully later today

OK, thanks.

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[rknrbt]

I got the truck back with the same standard reply We can't find anything wrong, you need to drive it more." I asked about replacing with an AGM battery and service manager said it already has an AGM. ALL Mavericks have always had AGM batteries. My battery is part #BXT-99RT4-A. I might be wrong but I don't think this an AGM battery. Pretty sad but his 30 year Ford retiree might soon be driving a Toyota or Subaru....

 

[RONR11]

Hard to believe it took almost 3 yrs to find out. I put an escape controller in about 6 mos after I got and I’ve never had any problems with battery drain

 

[MetalThunder]

I got the truck back with the same standard reply We can't find anything wrong, you need to drive it more." I asked about replacing with an AGM battery and service manager said it already has an AGM. ALL Mavericks have always had AGM batteries. My battery is part #BXT-99RT4-A. I might be wrong but I don't think this an AGM battery. Pretty sad but his 30 year Ford retiree might soon be driving a Toyota or Subaru....

Find a new Dealer for service .....

My 2024 XLT has the AGM ....

Flashback
NHTSA Closes Ford Maverick 12V Battery Investigation

Cheers

 

[Mareys]

I got the truck back with the same standard reply We can't find anything wrong, you need to drive it more." I asked about replacing with an AGM battery and service manager said it already has an AGM. ALL Mavericks have always had AGM batteries. My battery is part #BXT-99RT4-A. I might be wrong but I don't think this an AGM battery. Pretty sad but his 30 year Ford retiree might soon be driving a Toyota or Subaru....

AGM batteries are only in the 2025MY i believe

 

[TheSEARCH]

Hard to believe it took almost 3 yrs to find out. I put an escape controller in about 6 mos after I got and I’ve never had any problems with battery drain

Escape "controller" ??????? What do you mean?? Part Number?

 

[MakinDoForNow]

The proving if there is a noticeable battery drain isn't that hard actually.
They should be able to give you those figures after several on/off sleep cycles while they've had it.
The truck logs what the drain was after it goes to sleep. Next time they turn it on with scanner attached - they get the figure.
But like any vehicle issues - they gotta catch it - that's the hard part many times.

But the computer will report what it saw as max drain in milliAmps during the prior sleep period.
My Bat_QST_Cur reading below - Battery Quiescent Current at 69 mA is higher than supposed max 50 mA, but that's not going to cause a massive draw difference, unless it's always at that level when it should be dropping back to 25 mA for big chunks of time.
That's not even an LED light on though - so searching that down could be considered a waste of time when the impact would be minimal.
But that reading would point out when something is clearly very wrong, that requires more indepth troubleshooting.

(anyone else looking this over - 6 is my new battery age in days, temps show just started, and Eng_TQ shows ICE running, 12V Battery SOC is 80%, so only 5% away from fully charged.
So here already, start of a drive in the morning with good temp, only 5 Amps being sent to battery for recovery when they don't know how long I'll be driving. Perhaps that is the correct amps when only 5% away from fully charged. That is a topping charge already. Shockingly my cumulative charge is higher than discharge - but that was equal the next morning.)

Looking this over = I take the range of 35%-85% being the range of saturation charging. You are 5% away from finishing saturation charging. Perhaps installation of voltage regulator to lower voltage to float levels and have it activate at 85% (84? or ?) so the charging can continue at float. Let's assume programmer is targeting 85% being fully charged instead of switching to float. I have almost 3 years on very lightly driven 22 hybrid that sees Noco G5 every 4-6 weeks. A 30-40 mile drive will bring 12v to 12.6volts if down to 12.1v the following am and it stay there for 2-4 days if not driven. Let's assume that trying to float charge 12v at 14.6-15.6 routine is inadequate. Just a thought.....

 

[HeyBales]

Looking this over = I take the range of 35%-85% being the range of saturation charging. You are 5% away from finishing saturation charging. Perhaps installation of voltage regulator to lower voltage to float levels and have it activate at 85% (84? or ?) so the charging can continue at float. Let's assume programmer is targeting 85% being fully charged instead of switching to float. I have almost 3 years on very lightly driven 22 hybrid that sees Noco G5 every 4-6 weeks. A 30-40 mile drive will bring 12v to 12.6volts if down to 12.1v the following am and it stay there for 2-4 days if not driven. Let's assume that trying to float charge 12v at 14.6-15.6 routine is inadequate. Just a thought.....

So I've confirmed multiple times now - Ford's "SOC%" of 85% is fully charged.
They aren't using standard V readings to determine whatever that "SOC%" is defined as.
I agree that at the 85% the Amp reading is between 0 and 1, because it bounces between those 2 readings, unable to give a tenths digit. Right at a decent float charge on a topped off battery.
Great - that should work.

1st week - when it showed 80%, the amps was down to 5, 81 was 4, 82 was 3, 83 was 2, 84 was 1.
2nd week - it can't reach 80% already, dropping to 3 A around 77%. Like 80% is the new goal. But the 14.5 V in either case not great for float level charge.

So a voltage reading is only valid after no charging for awhile - obviously not while charging, or soon after.
So I'm assuming a valid V reading on 1st start of day - it knows about that.
Their SOC% seems to slightly follow that 1st start level.
But as you charge - can't use Volts anymore, so SOC is now mathematically done.
Since it can read the Amps going to the battery, it can track Ah, and if it knows the size of the battery thru the BMS relearn, it can deduce where the level would be.
IF it really knows the size of the battery, it can calculate that.

I think that step is off - it's got the wrong Ah size of the battery. There is a PID field for that - but for a owner-replaceable service item - they skipped giving an owner the chance to enter it wrong.
It's tracking as you drive what it thinks the SOC is, and that decides how many Amps to keep supplying - good principle.
But it's wrong. It can't keep up while driving because amps already too low with bad math.
Aggravating to watch it happen.

 

[cyberdog]

Hopefully the BAGM-T4 is a higher quality battery, the original EFC (Enhance Flooded Cell) is junk. Even out of the vehicle mine didn't hold a charge properly. - Reminds me to get my brother to test & swap it, especially if he can replace it with the new battery.

I currently have a H5-AGM stuffed in under the seat, and only saw a battery save once, when the stupid mirror dashcam stayed powered over a three day weekend. - Dropped just below the 12v threshold, and the truck cutoff the power to the accessories, but annoying just the same to see the message. (I'll swear it's tapped into fuse #3, but need to crawl under and check).

 

[johnDeere]

New question about the Mav hybrid battery issue.
Have you gone to the dealer and checked out a Mav hybrid and noticed the battery issue, very low or dead battery?
So then, How often does the dealer need to put trickle charges on the truck battery?
Some owners state that there truck can only last a couple of days before there battery is low in charge that the dome light does not come on.
Does the dealer park all the hybrids near electric outlets so the can put charges on them?
Do they just put a jump box on the battery just to get it running for a 15 minute test drive?
If the dealer doesn’t keep the battery on a charger all the time then the battery is destroyed before you buy the truck.
How long does a Mav hybrid sit at the dealer before it’s started or sold?
If this doesn’t happen then it’s something that is done after you purchase the truck. Maybe ford pass?
I purchased my 23 Mav hybrid XLT used so don’t know how many people started it or how long it sat untouched.
It was shown inside, so very hard to take it for a test drive it had front end damage.
it did not show any issues of bad battery when I purchased it.

 

[HeyBales]

New question about the Mav hybrid battery issue.
Have you gone to the dealer and checked out a Mav hybrid and noticed the battery issue, very low or dead battery?
So then, How often does the dealer need to put trickle charges on the truck battery?
Some owners state that there truck can only last a couple of days before there battery is low in charge that the dome light does not come on.
Does the dealer park all the hybrids near electric outlets so the can put charges on them?
Do they just put a jump box on the battery just to get it running for a 15 minute test drive?
If the dealer doesn’t keep the battery on a charger all the time then the battery is destroyed before you buy the truck.
How long does a Mav hybrid sit at the dealer before it’s started or sold?
If this doesn’t happen then it’s something that is done after you purchase the truck. Maybe ford pass?
I purchased my 23 Mav hybrid XLT used so don’t know how many people started it or how long it sat untouched.
It was shown inside, so very hard to take it for a test drive it had front end damage.
it did not show any issues of bad battery when I purchased it.

Pretty sure mine mfg 3/24 with a battery from late 11/23, activated 4/8, and purchased 4/23, already had a damaged cell, or almost. About 2 months in started paying attention, and it was for sure down to 5 cells already.

There is nothing that would have given an indication of that - unless it was already so low voltage the lights didn't turn on at all upon door open. How would anyone new to the truck know how long certain lights are supposed to stay on?

I'm betting that since few Ford mechanics are reporting to Ford they see battery charging issues (every warranty replacement is due to bad battery after all) - there is no advice from Ford to dealers to charge them up.
So unless a dealer has wised up to the issue - why would they do any battery charging, beyond whatever a normal routine might be done on all vehicles sitting for awhile?

I've always seen vehicles brought around for prospective buyer - probably to avoid any jump box being used if required as that would be terrible for a sale. So if they do - you wouldn't see it.
Besides that might leave test driver stranded - so for used perhaps better about charging it up.

 

[johnDeere]

Well it’s been 3 months, and just checked my second battery water level, (I have two batteries under the seat).
The water level was above normal, so it’s not over charging when it charges at 15.1v in spring time here in Michigan.
23 maverick hybrid XLT.

 

[johnDeere]

Well since the dealers don’t really know to much about the battery issue, or not letting the public know about it, I don’t think the dealer are going to put trickle chargers on the hybrids weekly.
If the hybrids are holding a battery charge at the dealers before purchases, then is it something we’re doing like ford pass?
Or is it something that we turn on for the first time or a sequence of turning something on?

 

[Timothyd]

I haven't given

New question about the Mav hybrid battery issue.
Have you gone to the dealer and checked out a Mav hybrid and noticed the battery issue, very low or dead battery?
So then, How often does the dealer need to put trickle charges on the truck battery?
Some owners state that there truck can only last a couple of days before there battery is low in charge that the dome light does not come on.
Does the dealer park all the hybrids near electric outlets so the can put charges on them?
Do they just put a jump box on the battery just to get it running for a 15 minute test drive?
If the dealer doesn’t keep the battery on a charger all the time then the battery is destroyed before you buy the truck.
How long does a Mav hybrid sit at the dealer before it’s started or sold?
If this doesn’t happen then it’s something that is done after you purchase the truck. Maybe ford pass?
I purchased my 23 Mav hybrid XLT used so don’t know how many people started it or how long it sat untouched.
It was shown inside, so very hard to take it for a test drive it had front end damage.
it did not show any issues of bad battery when I purchased it.

I haven't given the drain issue much thought beyond reading the posts here but I did put a jump box under the seat just in case. Thought I had a problem today when I went to use the Mav for the first time in a month. Got a little alarmed when I turned the key and nothing. I finally noticed it said "Ready to Drive" on the dash and put it in Drive and headed out on the battery. No crisis now but I wonder if the dealer is ready to upgrade? Or, are we waiting for a notification?

 

[rknrbt]

I haven't given

I haven't given the drain issue much thought beyond reading the posts here but I did put a jump box under the seat just in case. Thought I had a problem today when I went to use the Mav for the first time in a month. Got a little alarmed when I turned the key and nothing. I finally noticed it said "Ready to Drive" on the dash and put it in Drive and headed out on the battery. No crisis now but I wonder if the dealer is ready to upgrade? Or, are we waiting for a notification?

After the dealer having my '24 hybrid for 10 days and finding nothing wrong with the battery they charged it and sent it back and said I am to blame because I don't drive it enough. I drove it 5 of the last 6 days but today once again got the battery saver mode warning on my FordPass.

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