Hybrid 12v battery AC update - status?

[CD_SM]

I haven't seen anything about the supposed fix for the 12v that updates the AC computer.
My 2nd battery is also on its last legs. No saver mode yet, but it won't charge enough for the truck to leave the 12v port on like it should. (I even did 150 miles of back road driving and it didn't come back.)
I'm pretty sure the dealer will again replace the 12 v battery, but I'd like to hear others' experiences with the AC computer update before I push them for it.

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[OneAlienBoi]

I would just swap in a AGM battery. That's what Ford did under warranty for my '22 maverick. It seems like that's the best way to get rid of deep sleep issues.

 

[CD_SM]

I would just swap in a AGM battery. That's what Ford did under warranty for my '22 maverick. It seems like that's the best way to get rid of deep sleep issues.

I'll definitely ask them about that when I bring it in soon. (Oil is at 33%life, and the rear seat seatbelt sensors are still wonky, so it's about time.)

 

[LandoBanjo]

(46) Update on SSM-53801 | MaverickTruckClub - 2022+ Ford Maverick Pickup Forum, News, Owners, Discussions

 

[jeffrol48197]

I got my 4th new battery and did SSM for module update and have been watching and appears to have FIXED my parasitic problems! Happy here...

 

[Matso]

My dealer installed an AGM and performed the ACC update on my 24 Lariat hybrid. It didn't make any difference. It's back in service for the 5th time and they're not making any progress. I don't intend to discourage anyone from getting these things done, just be aware it might not be a fix.

 

[Red Eyes - Wide Shut]

I would just swap in a AGM battery. That's what Ford did under warranty for my '22 maverick. It seems like that's the best way to get rid of deep sleep issues.

AGM may last longer, but it will make no difference. Search and read all the posts over the years on this unfixed issue. Last time my 390 CCA flooded battery was changed out for a bigger 470 CCA along with programming and so far it's good. I'll have to wait for a few more months to really know if it holds up. If you get an AGM, the vehicle programming should be set up for the change.

 

[mike mitrione]

AGM may last longer, but it will make no difference. Search and read all the posts over the years on this unfixed issue. Last time my 390 CCA flooded battery was changed out for a bigger 470 CCA along with programming and so far it's good. I'll have to wait for a few more months to really know if it holds up. If you get an AGM, the vehicle programming should be set up for the change.

 

[mike mitrione]

Just left my Ford dealer and decided to trade in my 2024 Hybrid with 2,700 miles on it for a 2025 non Hybrid Mav. After reading all of these posts regarding these battery issues with no solid answers from Ford I'll take my hit and move on. I went through two 12V batteries within 48 hours, non AGM type and was left dead in the water. Had it towed back to the dealer. Sure, I could ask for an AGM replacement battery, carry a jump pack, etc. But I'm old , retired and don't want the aggravation and Ford still doesn't have a fix. I've had Ford products for 35+ years and I'll stay a customer but this Hybrid they can have back.

 

[Matso]

My dealership did all of the additional programming after installing the AGM, it made no difference. The one positive thing I can say is that there is enough reserve to always start the vehicle. I suppose that is the battery saver mode doing it's job anyway.

 

[Mareys]

My 22 Mav is sitting at Ford for the 4th dead battery in 14mo's . I had the ACC SSM done in May and it had been really good since then, dome lights always came on etc and then i let it sit 1 day and was DEAD the next morning. 1st day at Stealership they said it "May" have a dead battery need to do more testing, yesterday they said yup Battery is Dead but we have put so many batterys we have put a call into Ford for Guidence.... So very frustrating! As i have mentioned in the past i have only driven Fords since 1975 66 mustang and my last 03 F150 ran reliably for 20+ years! So very disappointed with this battery issue and yes i have followed all suggestions to save battery including running it all summer without running AC, never use the accessory ports, double lock w fob, wifi turned off, not paired with Ford pass and keys in Faraday pouch, excessive driving to never turn off unless i drive over 10miles (which i find the most annoying) Stay turned for update

 

[LSchicago]

Just left my Ford dealer and decided to trade in my 2024 Hybrid with 2,700 miles on it for a 2025 non Hybrid Mav. After reading all of these posts regarding these battery issues with no solid answers from Ford I'll take my hit and move on. I went through two 12V batteries within 48 hours, non AGM type and was left dead in the water. Had it towed back to the dealer. Sure, I could ask for an AGM replacement battery, carry a jump pack, etc. But I'm old , retired and don't want the aggravation and Ford still doesn't have a fix. I've had Ford products for 35+ years and I'll stay a customer but this Hybrid they can have back.

No issues with the 23 I had for 28k miles, or my 25. But mine are largely daily driven.

 

[ksh58]

I had the battery replaced under warranty about 3 weeks ago (2024 Hybrid) - dealer put in the non-AGM battery as specified in the owners manual, which was a better battery than what came in it new. Also had them do the AC module software update.
Then went on a 12-day 3400 mile trip. Had a camping fridge plugged into the 12 V port in the bed the whole time we drove, but moved it to be powered by an Anker battery pack or electric outlet when parked overnight.

Had no problems on the road. only time it went into sleep mode was when we set up camp and didn't start the truck for two days, and would open the doors and tailgate quite a bit during those two days. Interior and exterior lights stopped coming on, but truck started up as normal when we left that campsite, as it did for the whole trip.

I agree with the post that said it was just the battery saver function doing its job - as starting the engine is more important to me than dome light coming on all the time.
I know there is still an issue with some parasitic drain, but after this trip, I think I will quit worrying about it so much. Even before the battery replacement, when the car would go into saver mode fairly regularly, the truck never failed to start.

(Yes, I carry a jump pack and trickle charger for insurance, but only had to use the jump to help out a guy in the neighboring campsite.)

 

[HeyBales]

My 22 Mav is sitting at Ford for the 4th dead battery in 14mo's . I had the ACC SSM done in May and it had been really good since then, dome lights always came on etc and then i let it sit 1 day and was DEAD the next morning. 1st day at Stealership they said it "May" have a dead battery need to do more testing, yesterday they said yup Battery is Dead but we have put so many batterys we have put a call into Ford for Guidence.... So very frustrating! As i have mentioned in the past i have only driven Fords since 1975 66 mustang and my last 03 F150 ran reliably for 20+ years! So very disappointed with this battery issue and yes i have followed all suggestions to save battery including running it all summer without running AC, never use the accessory ports, double lock w fob, wifi turned off, not paired with Ford pass and keys in Faraday pouch, excessive driving to never turn off unless i drive over 10miles (which i find the most annoying) Stay turned for update

Just for general info since you tried everything, so others don't need to go thru some of these actions.

Non-keyless entry fob only sends a signal when you push a button - faraday blocking isn't blocking anything. Besides - truck still keeps it's radio powered up listening for a fob button being pressed 24x7. And keyless-entry fob goes to sleep after a couple minutes of non-movement. But truck is listening 24x7 anyway.

Running AC or not doesn't matter - never heard that one. AC powered by HVB same as 12VB recharging via DCDC converter, when ICE not running - so you saved a little fuel with ICE running a tad less with no AC.
Same as power ports, not robbing power from the 12V charging like there is some max available.

Remote double-lock turns some lights off quicker on pre-24MY it seems - but if battery low they probably turned off on door open anyway, but I'd bet even for pre-24MY powerports are on max 75 min if battery V is good enough.

Truck doesn't pair with Fordpass - if you don't pull fuse 11 the truck is still sending up exactly the same info after every park to Ford's servers, if cell signal allows. Fordpass merely allows you to view some of the data last reported, and have remote access to some functions. I've never heard of Fordpass going rogue and causing actions on the truck unrequested.

Sounds like you have classic parasitic draw - dead in a day or two. The ACCM update you got took care of the one Ford must have thought was the big one. But you had another, or the update didn't work.
3 threads have shared the TCU was their module that had to get replaced - so hopefully they find your reason and don't just replace the battery.

Oh - you'll still have the undercharging issue, any changes on the usage side won't make a difference, but they may prevent a misbehaving module from going nuts with another parasitic draw - like disabling WiFi probably a good idea. Fuse 11 if your ATT cell signal sucks in your parking spots.

53 day old battery for me.
Started at normal full charge 12.75 V after a rest, and the matching Ford max SOC 85%.
Currently at 70% and 12.0 V in the mornings.
After a 20 min drive up to 75%.
But the BMS system thinks the cumulative charge Ah matches the discharge. Charge figure actually increases before the combined discharge figures do. (ok, due to rounding it does to whole number, that could be reversed in reality, but still not that fast of drain)
If that was true the battery would not be worse by now.
(yes - that sleeping mA current of 64 is higher than expected max 50, but it really doesn't matter)

Hope they find the reason for your last fast issue, and don't just chalk it up to bad battery.

 

[Matso]

Yep, good luck. One AGM replacement and ACCM update later, the battery SOC still around 17% with no parasitic draw found. Over 18 months since delivery , they have no idea what is causing the battery draw down vs insufficient charge. It's not some key fob crap or fuse number 11 BS so maybe we can stop talking about all of that. IF they find a solution, I'll be happy to post about it. But I doubt it will happen.

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