FINALLY!! An upcoming 12v battery fix for hybrids!!!

[Benilla]

So far this winter, I've had deep sleep mode turn on once when I didn't drive for 6 days and it was quite cold outside (-20C). I plugged in my battery charger, let it charge overnight and haven't had it go deep sleep mode in 30 days now.

I'm wondering how many MTC members have battery chargers to maintain their 12V in the winter? I've even had to charge my lady's Volvo XC60 to keep her 12V topped up so its a normal winter thing for us.

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[HeyBales]

Almost all the time its a very quick traffic blip, just to check if there are updates to your Sync system. If there is an update it would be somewhat larger once every half year or so when Blackberry releases a new version. Obviously if you are using the modem to connect because your truck not connected to your house WiFi overnight, then it will take slightly longer. I'm not sure how long, since we don't have AT&T in Canada and therefore have absolutely no use for the modem option. I presume that your AT&T website would have a chart or table showing the traffic and the time that you can look at.

Ok - talking about 2 different systems then.

You are talking about the WiFi check for updates to the infotainment system only.
That is ONLY over the WiFi connection if setup. Indeed once a day check. And worthless on non-sync systems as no updates likely.

But you were replying to a post about the Telematics system with fuse 11, which ONLY uses the ATT network thru the modem. That's what I was referencing.
Obviously in Canada without ATT it's using a different network, or just roaming agreements.
That is for Fords use, whether you make use of it or not.

While I just proved out the TCU does indeed have all the WiFi settings in it, so pulling fuse 11 does indeed stop that Wifi along with the ATT modem - they are 2 different systems.

Your truck is connecting via ATT (or roaming or whoever) if it can, a whole lot more than it's connecting thru WiFi once a day. And it's uploading more data than a mere version check.
If you have Connected Vehicle enabled so you have access thru Fordpass - it's constant access needed so you can unlock & start truck.

That's what the fuse 11 is taking care of, that you replied to as not being useful.

 

[HeyBales]

Someone posted that a 1 amp trickle was inadequate due to having to furnish and make up for the random draws. He recommended a 4 amp multistage maintainer. The maintainer will most likely drop to 2 amp at 80% soc reducing lower at 90-95% etc.

Drive this morning, truck dropped to 4A after about 2-3 min, then to 2, finally to 1 to 0 shown. Within the space of a 15 min drive with idle time at bank.
SOC % started 58% before key to On and charging started, so what the truck should have had down. Got to 63% by end, which isn't accurate of course, but what it thought.
Despite cold it's holding to 55% most mornings, 11.8 V resting.
I'm sure that should kill the battery quickly. Then with a new one I'll do the maintainer - I just want it dead before warranty gone.
Doing the limbo - how low can you go!

 

[Cuban Al]

Your dealer, like many dealers, is not fully informed on the Maverick battery issues. Your dealer should be aware of the upcoming software fix and the current Hybrid battery is not adequate. With the MY 25 hybrids, Ford finally put in an AGM battery. Perhaps another Ford dealer will be more helpful...

Just had my 2024 hybrid (9 MONTHS OLD 5800 MILES) towed for the second time to the dealer. 3rd battery jump in 4 days and this time the battery did not take a charge. Ford customer service told me "do not put an AGM battery as it will void all warranties and the same for trickle chargers. She said Ford is aware of the deep sleep issues but have NOT found a fix. So I am stuck again with no transportation for days while the dealerv will put the same battery in a super charger and give it back so it will happen again. I reckon the Ford engineers are concentrating on creating more useless and unwanted electronics and modules to add to their vehicles to make them more unreliable. So far they have paid for 9 road service battery jumps and two tows plus 2 days at Sanders Ford. The fact that you can not put these vehicles into neutral to at least move them to a proper towing location or a safe location is pretty sad. The incessant clicking noises from these Mavericks is super annoying, going on for 20 minutes after shutdown and every time you open a dorr or go near the truck. NO MORE FORDS FOR ME, specially a hybrid. Wr also have a 1 year old Bronco that has gotten more recalls than all my other vehicles that I owned in 55 years.

 

[Benilla]

Just had my 2024 hybrid (9 MONTHS OLD 5800 MILES) towed for the second time to the dealer. 3rd battery jump in 4 days and this time the battery did not take a charge. Ford customer service told me "do not put an AGM battery as it will void all warranties and the same for trickle chargers. She said Ford is aware of the deep sleep issues but have NOT found a fix. So I am stuck again with no transportation for days while the dealerv will put the same battery in a super charger and give it back so it will happen again. I reckon the Ford engineers are concentrating on creating more useless and unwanted electronics and modules to add to their vehicles to make them more unreliable. So far they have paid for 9 road service battery jumps and two tows plus 2 days at Sanders Ford. The fact that you can not put these vehicles into neutral to at least move them to a proper towing location or a safe location is pretty sad. The incessant clicking noises from these Mavericks is super annoying, going on for 20 minutes after shutdown and every time you open a dorr or go near the truck. NO MORE FORDS FOR ME, specially a hybrid. Wr also have a 1 year old Bronco that has gotten more recalls than all my other vehicles that I owned in 55 years.

Void the warranty for the battery or void the warranty for the entire vehicle? It's worth voiding the warranty on the battery and just charging it yourself with a battery charger. I'm confused as to the battery not taking a charge but then the dealership puts it in a super charger and so it does take a charge?

 

[MakinDoForNow]

Drive this morning, truck dropped to 4A after about 2-3 min, then to 2, finally to 1 to 0 shown. Within the space of a 15 min drive with idle time at bank.
SOC % started 58% before key to On and charging started, so what the truck should have had down. Got to 63% by end, which isn't accurate of course, but what it thought.
Despite cold it's holding to 55% most mornings, 11.8 V resting.
I'm sure that should kill the battery quickly. Then with a new one I'll do the maintainer - I just want it dead before warranty gone.
Doing the limbo - how low can you go!

Ahhh yesss limbo

 

[Packer Bill]

Ford customer service told me "do not put an AGM battery as it will void all warranties and the same for trickle chargers. She said Ford is aware of the deep sleep issues but have NOT found a fix.

This customer service rep is obviously ill-informed. AGM batteries will NOT void the warranty and in fact are necessary for the Maverick (both hybrid and EB). All the MY 25 Mavericks will have an AGM battery. Most owners of Mavericks who have installed AGM batteries have found some success in curbing the battery issue.

You can use trickle chargers without voiding the warranty...once again this rep is ill-informed. In fact, trickle chargers will prolong the life of the car battery.

There is a software fix for the battery issue, coming the first quarter of 2025, that hopefully will fix our battery issues. Ford needs to do some additional training for these reps imho. This is not the first time reps are giving bad info.

 

[HeyBales]

This customer service rep is obviously ill-informed. AGM batteries will NOT void the warranty and in fact are necessary for the Maverick (both hybrid and EB). All the MY 25 Mavericks will have an AGM battery. Most owners of Mavericks who have installed AGM batteries have found some success in curbing the battery issue.

You can use trickle chargers without voiding the warranty...once again this rep is ill-informed. In fact, trickle chargers will prolong the life of the car battery.

There is a software fix for the battery issue, coming the first quarter of 2025, that hopefully will fix our battery issues. Ford needs to do some additional training for these reps imho. This is not the first time reps are giving bed info.

For sure, perhaps the rep was thinking of this warning for non-hybrid, which still doesn't say exact same battery, just same spec, which includes the hybrid later on in manual section. They also talk about charging as possible. These batteries being discussed match or exceed the current spec!

CHANGING THE 12V BATTERY - HYBRID ELECTRIC VEHICLE (HEV)

WARNING: For vehicles with Auto-Start-Stop the battery requirement is different. You must replace the battery with one of exactly the same specification.

If you replace the battery make sure it matches the electrical requirements of your vehicle.

After battery replacement, or in some cases after charging the battery with an external charger, the battery management system requires eight hours of vehicle sleep time to relearn the battery state of charge. During this time, your vehicle must remain fully locked with the ignition switched off.
----------------------------

Love this footnote under the specs section regarding the EB battery - how in the world is that supposed to be done without the dealer! No footnote on hybrid battery.

1 Configure your vehicle’s battery management system to match the replacement battery. If using a battery not listed, it must match the specification as one of the listed batteries. Configure your vehicle’s battery management system to match the listed battery. Failure to use an appropriate configuration for your battery management system could result in shortened battery life, features not working correctly, or your vehicle not starting. Consult your local dealer or service provider for further details.

 

[MakinDoForNow]

This customer service rep is obviously ill-informed. AGM batteries will NOT void the warranty and in fact are necessary for the Maverick (both hybrid and EB). All the MY 25 Mavericks will have an AGM battery. Most owners of Mavericks who have installed AGM batteries have found some success in curbing the battery issue.

You can use trickle chargers without voiding the warranty...once again this rep is ill-informed. In fact, trickle chargers will prolong the life of the car battery.

There is a software fix for the battery issue, coming the first quarter of 2025, that hopefully will fix our battery issues. Ford needs to do some additional training for these reps imho. This is not the first time reps are giving bed info.

Hmmm. How many correct answers would a service rep have to give before their BED INFO could be trusted????

 

[Thex]

My 2022 Hybrid got the deep sleep warning with only one day of NOT driving this year. I have gotten it a few times the past couple of years when the temp was below 20F and only after 5-7 days of not driving it, (out of town.) I went to quick service at FORD today told them about the deep sleep and that there was a service bulletin out for it.
They found the SB and followed the instructions on it. They warrantied and replaced my battery!

 

[okgaz]

Just had my 2024 hybrid (9 MONTHS OLD 5800 MILES) towed for the second time to the dealer. 3rd battery jump in 4 days and this time the battery did not take a charge. Ford customer service told me "do not put an AGM battery as it will void all warranties and the same for trickle chargers. She said Ford is aware of the deep sleep issues but have NOT found a fix. So I am stuck again with no transportation for days while the dealerv will put the same battery in a super charger and give it back so it will happen again. I reckon the Ford engineers are concentrating on creating more useless and unwanted electronics and modules to add to their vehicles to make them more unreliable. So far they have paid for 9 road service battery jumps and two tows plus 2 days at Sanders Ford. The fact that you can not put these vehicles into neutral to at least move them to a proper towing location or a safe location is pretty sad. The incessant clicking noises from these Mavericks is super annoying, going on for 20 minutes after shutdown and every time you open a dorr or go near the truck. NO MORE FORDS FOR ME, specially a hybrid. Wr also have a 1 year old Bronco that has gotten more recalls than all my other vehicles that I owned in 55 years.

Someone can feel free to correct me, but anyone telling you that putting in a new battery (even an AGM) or charging a battery voids your warranty - is taking nonsense IMO.

I believe that the Magnuson Moss Warranty Act protects consumers from being denied warranty coverage on their cars due to the use of aftermarket parts.

From what I understand, the only way that could even be slightly true is if Ford can somehow tie / link an issue directly to the aftermarket battery that you installed. For example, the key fob isn't working / Ford finds it's the aftermarket battery's fault / they now won't fix the fob under warranty, despite it being under warranty.

But they can't just say "you put in an aftermarket battery so now you voided your warranty". Would the same apply to aftermarket brake pads? Or aftermarket spark plugs? Or aftermarket filters? Or not using the type of oil that Ford recommends when changing at home?

You get the idea.

Anyone want to correct me here?

 

[billpitman]

The 12 V system is getting 17A, the battery is getting 1A (or rounded up from <1) @ 15.1 V.
15.1 W.

At less than 50% SOC you should be getting deep sleep warnings, unless it rises slowly on turn-off.
SOC is very inaccurate measurement while charge/discharge is going on.
Not sure how long system takes to decide "oh yeah this is low turning off TCU after sending out notice to Ford".

How's ATT network in areas where truck sits?

Hopefully this is useful to some folks…….
I did a full overnight charge, of the 12 v battery, NOCO Genius 10, see “ before repair” photo
I then did a “ Repair mode” setting……,BE SURE TO DISCONNECT NEGATIVE CABLE AT BATTERY, see “ after NOCO repair” photo
Did another full charge, reset BMS, locked & let vehicle alone for around 12 hours

Took a short trip today, vehicle seems to be charging better now, see photo

All bullshit we really shouldn’t have to deal with……! Bill P

 

[billpitman]

1-5-25 Follow up to post #162...see photos 1-4

Photo #1 is after a 20 minute ride, vehicle still on, 12v SOC was 50% at start, 52 after 20 mins.
Note that DCLVA was supplying 12 amps to 12v system, 1 amp of which was charging the 12v battery…… makes no sense, right?!

Photo #2 is after that 20 minute ride, vehicle turned off, 12v SOC at 52%(wow), DCLVA goes to 0 amps, discharge amps are 11 amps from the 12 v battery, but battery voltage is at 12.8v!

Photo #3 is after a start & 5 minutes home, vehicle running, SOC 52%, 1 amp charging, DCLVA supplying 20 amps to power 12v systems.

Photo #4, vehicle turned off, DCLVA to 0 amps, LvbA discharging at 12 amps, battery voltage is at 12.8v, which represents almost 100% charge, no?!

Also, I have the service manual for this vehicle, it’s good for most….., but they have very poor “Theory of Operation” for electronics components……

Being a Navy vet, my comment to ford would be….” You need to get your shit together”, or at least “get it in one bag”. Bill P, good night all…..

 

[MakinDoForNow]

1-5-25 Follow up to post #162...see photos 1-4

Photo #1 is after a 20 minute ride, vehicle still on, 12v SOC was 50% at start, 52 after 20 mins.
Note that DCLVA was supplying 12 amps to 12v system, 1 amp of which was charging the 12v battery…… makes no sense, right?!

Photo #2 is after that 20 minute ride, vehicle turned off, 12v SOC at 52%(wow), DCLVA goes to 0 amps, discharge amps are 11 amps from the 12 v battery, but battery voltage is at 12.8v!

Photo #3 is after a start & 5 minutes home, vehicle running, SOC 52%, 1 amp charging, DCLVA supplying 20 amps to power 12v systems.

Photo #4, vehicle turned off, DCLVA to 0 amps, LvbA discharging at 12 amps, battery voltage is at 12.8v, which represents almost 100% charge, no?!

Also, I have the service manual for this vehicle, it’s good for most….., but they have very poor “Theory of Operation” for electronics components……

Being a Navy vet, my comment to ford would be….” You need to get your shit together”, or at least “get it in one bag”. Bill P, good night all…..

The 12.8v in #4 is the surface charge less the open circuit reading probably just over 13v since 12 amp discharge. Need to take reading after battery has no charge/discharge for at least 45 minutes (very hard to do on an active "flow" battery without removing battery and bench testing).

 

[billpitman]

This is an excellent video by WeberAuto, on the operation of a DC-DC CONVERTOR ! Bill P

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