2025 Hybrid - Potential Battery Drain?

[MakinDoForNow]

So took mine in with info from here, and a Ford case number. Dealer said we have to run diagnostics and make sure your vehicle wasn't in accident. Not happy with that response, but I guess it's SOP! So after car there for 8 hours, and not knowing if they called in on case number, got standard response. "We ran all diagnostics, all software up to date. The battery does keep a charge, so we replaced with AGM"

I guess just a ticking bomb waiting to raise its head later

About Jan 1 +/- this year my dealer installed an "MRI?" tunnel at the check in area that is coned so that you have to drive through. Checks for leaks, tire wear, frame alignment, etc, etc. I would expect to check all codes, etc also.

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[Darryl]

Those that are fixed, are fixed. . Fortunately, most are fixed. It's just a stubborn few that give us a headache even after we try everything Ford suggests

So took mine in with info from here, and a Ford case number. Dealer said we have to run diagnostics and make sure your vehicle wasn't in accident. Not happy with that response, but I guess it's SOP! So after car there for 8 hours, and not knowing if they called in on case number, got standard response. "We ran all diagnostics, all software up to date. The battery does keep a charge, so we replaced with AGM"

I guess just a ticking bomb waiting to raise its head later

Did they update the air condition control module? If they did, then replacing the battery with an AGM is absolutely all they can do at this point. However, they may or may not be aware of the message which tells us to submit a GSR report to Ford. Truth be told, some technicians do not read the bulletins everyday. And others May only do normal tests unless they encounter the Maverick regularly. I would say to specifically ask if they did a report that if they updated the ACCM. As far as them asking if you had been in an accident, don't take it personal because we regularly get customers who leave out very important information until they are specifically asked. Some do it on purpose. But others simply have no idea that the information was important until they asked about it.

 

[schneidrd]

I asked. No real positive answer. Just no updates needed. Battery won't hold charge, so we replaced with AGM

 

[Mav Rickn]

So took mine in with info from here, and a Ford case number. Dealer said we have to run diagnostics and make sure your vehicle wasn't in accident. Not happy with that response, but I guess it's SOP! So after car there for 8 hours, and not knowing if they called in on case number, got standard response. "We ran all diagnostics, all software up to date. The battery does keep a charge, so we replaced with AGM"

I guess just a ticking bomb waiting to raise its head later

I need to do this to get a new battery...

 

[Robot-Wrangler]

I've been to Ford three times, and the 12v battery still goes dead. I drove it 55 miles on the highway home and parked in my yard at 7:35am. It went into battery saver by lunch. I just started the truck and ran it with the accelerator to the floor board for 30 minutes at 7:30pm. That should have charged all batteries fully. The problem is getting worse with the cold weather.

This is an absolute POS engineering failure if you ask me. I'm considering a total revamp of Ford's design using one or two deep cycle batteries and a couple of relays. I might add an on board battery charger and a large inverter as well. I believe under the rear seat is about to look very different soon. The truck has bricked itself dead twice with only 6v in the 12v battery. Something needs to change for the better.

 

[HeyBales]

I've been to Ford three times, and the 12v battery still goes dead. I drove it 55 miles on the highway home and parked in my yard at 7:35am. It went into battery saver by lunch. I just started the truck and ran it with the accelerator to the floor board for 30 minutes at 7:30pm. That should have charged all batteries fully. The problem is getting worse with the cold weather.

This is an absolute POS engineering failure if you ask me. I'm considering a total revamp of Ford's design using one or two deep cycle batteries and a couple of relays. I might add an on board battery charger and a large inverter as well. I believe under the rear seat is about to look very different soon. The truck has bricked itself dead twice with only 6v in the 12v battery. Something needs to change for the better.

Don't waste your gas or your calf muscle.

You caused absolutely nothing different than if you just turned it On and let it sit.
It's a built in battery charger - not an alternator running off the engine. Power is coming from the HVB via the DCDC converter. ICE running or not doesn't even matter.
It's going to do it highest charge in about 7-12 min dropping from maybe 9 to 2 A, then it's going to float charge around 0.5 A from then on.

It's probably done attempting to charge above the 12.1 V line that starts the battery saving functions. Therefore it dropped quickly.
Which BTW - will save your battery for the next start, if doors are frequently getting opened/closed.
You probably need a BMS Relearn if you don't regularly get one.
Do you normally park it locked for 9 hr daily?

ETA:
Thanks for posting the new App error.
Boy did they change that up to something much more generic and less negative sounding.
Compared to prior errors.
Control customer expectations by how the errors sound - hope they didn't spend engineers time working on that one!

 

[Darryl]

I asked. No real positive answer. Just no updates needed. Battery won't hold charge, so we replaced with AGM

So the answer was No. They didn't. If the problem reoccurs specifically mention that there's an ssm saying to update the ACCM. And there's another SSM saying to file a GSRBwith Ford if the problem persists after updating the ACCM. If everything is fine, and it was simply a defective battery. Then you'll be fine.

 

[Darryl]

Don't waste your gas or your calf muscle.

You caused absolutely nothing different than if you just turned it On and let it sit.
It's a built in battery charger - not an alternator running off the engine. Power is coming from the HVB via the DCDC converter. ICE running or not doesn't even matter.
It's going to do it highest charge in about 7-12 min dropping from maybe 9 to 2 A, then it's going to float charge around 0.5 A from then on.

It's probably done attempting to charge above the 12.1 V line that starts the battery saving functions. Therefore it dropped quickly.
Which BTW - will save your battery for the next start, if doors are frequently getting opened/closed.
You probably need a BMS Relearn if you don't regularly get one.
Do you normally park it locked for 9 hr daily?

ETA:
Thanks for posting the new App error.
Boy did they change that up to something much more generic and less negative sounding.
Compared to prior errors.
Control customer expectations by how the errors sound - hope they didn't spend engineers time working on that one!

Sounds like this truck isn't going to work for me with my 6 minute commute to work. I figured I'd save so much in gas, and so far I have coming from a 2020 F250 7.3 Tremor, but this battery drain thing is going to be a lingering issue. Had I known, I likely would've gotten the 2.0 turbo.

It's probably going to be just fine . It's just a relative few that are persistently problematic. As a tech, this has become MY Standard procedure for a Maverick hybrid that's under warranty. If the battery is bad, replace it and reset the BMS. If there were no other complaints prior. I release the vehicle. If it's a return visit or second battery, then I FULLY charge and retest the battery and replace if necessary. Then I perform the ACCM update as per Ford recommendation. In most cases, that's all that's necessary. The vehicle is usually problem free from then on. Don't get spooked. Yes, there are some that are problematic. But the VAST MAJORITY are just fine. When you have a forum like this, those with problems are overrepresented because very few people just randomly announce "my car is not giving me any problems" . People don't come to a forum and ask if anyone can explain why there vehicle is not giving them any problem . .

 

[KenE]

It's probably going to be just fine . It's just a relative few that are persistently problematic. As a tech, this has become MY Standard procedure for a Maverick hybrid that's under warranty. If the battery is bad, replace it and reset the BMS. If there were no other complaints prior. I release the vehicle. If it's a return visit or second battery, then I FULLY charge and retest the battery and replace if necessary. Then I perform the ACCM update as per Ford recommendation. In most cases, that's all that's necessary. The vehicle is usually problem free from then on. Don't get spooked. Yes, there are some that are problematic. But the VAST MAJORITY are just fine. When you have a forum like this, those with problems are overrepresented because very few people just randomly announce "my car is not giving me any problems" . People don't come to a forum and ask if anyone can explain why there vehicle is not giving them any problem . .

So true Darryl, we seldom hear from the ones who have little to no problems, but that's natural & not unusual behavior. Listen to the nightly news - riots, political unrest, killings & arrests, war for 29 minutes. Then just one good human nature story the last minute of the telecast. I for one have had no deep sleep/ unexpected or unexplained 12V battery drain issues on my 25MY hybrid Lariet. Yea! I follow the forum to listen, learn, and occasionally post.

 

[Darryl]

So true Darryl, we seldom hear from the ones who have little to no problems, but that's natural & not unusual behavior. Listen to the nightly news - riots, political unrest, killings & arrests, war for 29 minutes. Then just one good human nature story the last minute of the telecast. I for one have had no deep sleep/ unexpected or unexplained 12V battery drain issues on my 25MY hybrid Lariet. Yea! I follow the forum to listen, learn, and occasionally post.

When we were getting our customer satisfaction pep talk from Ford, they told the advisors to gently ask the satisfied customers to turn in their survey if they got one. Our dealership benefits from Ford as well as advisor pay is influenced by survey scores. We had one month where only 4 surveys were turned in. We remembered many happy customers and only one who was unhappy that month. 3 happy customers filled out surveys. But the one dissatisfied customer turned his in. It cost the advisor $500.00 in pay. They also said that a happy customer usually tells 3 people. But a dissatisfied customer tells an average of ELEVEN! It's human nature.

 

[Neils Bohr]

About Jan 1 +/- this year my dealer installed an "MRI?" tunnel at the check in area that is coned so that you have to drive through. Checks for leaks, tire wear, frame alignment, etc, etc. I would expect to check all codes, etc also.

My dealer reset and reprogrammed all of the modules in the truck one by one and that fixed my drain problem. The initial AGM replacement fix didn't even work for a day. Neither did the ACCM update.

 

[Mav Rickn]

Dealership got my battery replaced. Tested the one I had and it tested bad, failed the test. Replaced with a Ford Motorcraft AGM (BAGM-H4). They performed the BMS reset and no issues persisted. I'll see how things go from now on. Also got my windshield ding repaired after it happening on the way to the dealership...

 

[HeyBales]

Dealership got my battery replaced. Tested the one I had and it tested bad, failed the test. Replaced with a Ford Motorcraft AGM (BAGM-H4). They performed the BMS reset and no issues persisted. I'll see how things go from now on. Also got my windshield ding repaired after it happening on the way to the dealership...

Just a reminder, since I've yet to hear a dealership correctly tell the owner what the manual says to do after a new battery.
They performed the BMS Reset, great - but they are very unlikely to have let it sit for 9 hrs (8 hrs in sleep mode after 1 hr falling asleep) locked for the also required BMS Relearn.

So make sure it's charged up (leave it on for 20 min to help, unless you have a charger), then off and locked overnight with no accessories hooked up.

 

[Mav Rickn]

Just a reminder, since I've yet to hear a dealership correctly tell the owner what the manual says to do after a new battery.
They performed the BMS Reset, great - but they are very unlikely to have let it sit for 9 hrs (8 hrs in sleep mode after 1 hr falling asleep) locked for the also required BMS Relearn.

So make sure it's charged up (leave it on for 20 min to help, unless you have a charger), then off and locked overnight with no accessories hooked up.

I can confirm the truck sat for at least 8hrs since I didn't pick it up immediately, waited until next day. Good thing I waited though...Don't think they left anything hooked up.

 

[Neils Bohr]

Just a reminder, since I've yet to hear a dealership correctly tell the owner what the manual says to do after a new battery.
They performed the BMS Reset, great - but they are very unlikely to have let it sit for 9 hrs (8 hrs in sleep mode after 1 hr falling asleep) locked for the also required BMS Relearn.

So make sure it's charged up (leave it on for 20 min to help, unless you have a charger), then off and locked overnight with no accessories hooked up.

They also prob didn't charge the battery to 100 before doing a reset

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