So the upcoming software update that pertains to the 12V will be installed in place of the older software updates that pertained to the same thing, rather than being installed alongside it?
Sponsored
Sponsored
FINALLY!! An upcoming 12v battery fix for hybrids!!!
- Thread starter jeffrol48197
- Start date
- Watchers 44
- First Name
- Mike
- Joined
- May 3, 2024
- Threads
- 4
- Messages
- 4,952
- Reaction score
- 4,556
- Location
- KC Metro area
- Vehicle(s)
- 2005 Toyota RAV4, 2024 XLT Hybrid
- Engine
- 2.5L Hybrid
The software in the Body Control Module is 1 chunk of software.
The latest contains the prior updates for whatever they may have updated. For many different potential things - like the tail light issue is in the BCM.
May have updated things that aren't even issues - just improvements or changes.
Some may require another module to be updated so they talk nicely and completely with each other.
That's the kicker - if a tech doesn't see that warning that another module needs to be updated also.
This isn't like Windows where a couple individual files could be updated by themselves, and then next update another few are done.
Last edited:
- First Name
- Mike
- Joined
- May 3, 2024
- Threads
- 4
- Messages
- 4,952
- Reaction score
- 4,556
- Location
- KC Metro area
- Vehicle(s)
- 2005 Toyota RAV4, 2024 XLT Hybrid
- Engine
- 2.5L Hybrid
Reread this thread and a few of the Similar threads shown below this one.
You'll discover it's NOT just about battery usage - mainly charging and battery type.
You won't "save" the battery with no TCU - may extend by helping.
TCU's have been used on vehicles without a problem with battery drain (unless issues) since what - early 2000's.
So, what are the symptoms of the battery wearing out. On mine it will click and hum without any inputs. It’s kinda weird, it wasn’t running for a day and as I am working in the garage and it starts clicking and whirring.
Sponsored
Seems like you have to wait 45-60 minutes after turning off before checking voltage after driving.Mine 2 year old one (well Fab. Date 7/22) is still getting me by.
Always 12.4v when I park it after a long drive. Always 11.8v to 11.9v the next morning.
Weird. But not getting worse.
I noticed it in the Fall of 2022.
I reported it then with like 5000 miles.
Ford told me "no free battery as long as it starts". Well so far it has never not started.
PS I used a NOCO GENIUS 5 on it a few times. Made zero observable difference.
Now I think we got sold 11.8 v batteries.
ETA: Did you leave your genius 5 on it until it finished it's optimization or did you take it off after it just finished it's charge cycle. I will sometimes leave mine on for four or more days with truck locked. Then the maintenance mode comes on after the thing takes 0.1 volts off battery and tops it off it appears that lets the bms slowly up its charge to target. In any case after two or more days after no driving I still see 12.4 volts the next am. 12.1-12.2 after five days sitting. It appears to need several days on maintenance mode to optimize. I do double lock my trucks to reduce the battery drain a little bit. So I don't get the clicking, etc when I approach truck in garage.
Last edited:
The tech that did three updates in my drive downloaded each update from Ford's server and applied them separately. He watched his laptop and said during the third recall that some of the modules were updated by all three. But it did not matter which order the updates were run because each module should have received the most current update. What matters is if the 12 volt has enough voltage to keep everything turned on, which is why he put his power supply on the truck.
- First Name
- Jon
- Joined
- Apr 12, 2022
- Threads
- 10
- Messages
- 572
- Reaction score
- 560
- Location
- Houston TX
- Vehicle(s)
- CR-V
- Engine
- 2.5L Hybrid
this is normal behavior. Mine does the same and so did the ‘23 I had before it.
At the beginning of October when I had my free oil change - I told my local service department everytime I drive the truck, 5 mins after I get a notification
They replaced my 12v battery.
Again, beginning of October 2024 my 12v was replaced
Ohh this is going to be fun Monday.
I have been fighting with the dealer over declined warranty work on several items. Ford's post service survey is what got me attention and the ability to get it back and fixed.
I go back Monday and they have promised to fix everything and are giving me a loaner, however I already replaced the Battery with an AGM so they cannot correct this.
FYI "under glow", I have 3 LED strips. On on the hood others have done here above the grill, then 1 on each side of the vehicle. The running lights have a fuse tapped that is is off via the ignition, the turn signals are connected to the turn signals with a hardness, and the courtesy / puddle are run from the back and tied into the bed lighting.
The ONLY lights that will stay on with the truck off, are tied to the bed light and in bed LED, and is managed by the truck, so I can't just forget and leave them on and kill the battery.
Every issue I was declined on was like the technician looked for the fastest way to deny warranty on each item.
This is for sure getting brought up on Monday.
I have been fighting with the dealer over declined warranty work on several items. Ford's post service survey is what got me attention and the ability to get it back and fixed.
I go back Monday and they have promised to fix everything and are giving me a loaner, however I already replaced the Battery with an AGM so they cannot correct this.
FYI "under glow", I have 3 LED strips. On on the hood others have done here above the grill, then 1 on each side of the vehicle. The running lights have a fuse tapped that is is off via the ignition, the turn signals are connected to the turn signals with a hardness, and the courtesy / puddle are run from the back and tied into the bed lighting.
The ONLY lights that will stay on with the truck off, are tied to the bed light and in bed LED, and is managed by the truck, so I can't just forget and leave them on and kill the battery.
Every issue I was declined on was like the technician looked for the fastest way to deny warranty on each item.
This is for sure getting brought up on Monday.
Sponsored
- First Name
- Nigel
- Joined
- Oct 28, 2022
- Threads
- 0
- Messages
- 25
- Reaction score
- 33
- Location
- Los Angeles
- Vehicle(s)
- 2023 Maverick XL Hybrid
- Engine
- 2.5L Hybrid
From an article on fordauthority.
“According to Dawn McKenzie, Ford Trucks communications manager, the 2025 Ford Maverick features the latest Ford hybrid transmission – the HF55. The HF55 gearbox has a higher torque capacity than the HF45, which was previously used in the 2022-2024 Ford Maverick Hybrid, as well as the Ford Escape Hybrid. As Ford Authority previously reported, the latest master contract agreement between Ford and the United Auto Workers (UAW) union reveals that production of the HF45 is slated to end at some point in the future, meaning that it will presumably be replaced by the HF55 altogether.”
- First Name
- Mike
- Joined
- Sep 23, 2022
- Threads
- 3
- Messages
- 90
- Reaction score
- 72
- Location
- Orange, CA
- Vehicle(s)
- 2022 Hybrid Lariat
- Engine
- 2.5L Hybrid
The Hybrid does not have AGM batteries!
- First Name
- David
- Joined
- Feb 28, 2023
- Threads
- 0
- Messages
- 99
- Reaction score
- 64
- Location
- Saint John Indiana
- Vehicle(s)
- 2023 Hybrid Lariat Lux in Cactus Gray
- Engine
- 2.5L Hybrid
My 2nd battery started to Deep Sleep at 6 months old, same as the first battery. I bought an AGM battery off Amazon for $150 delivered, reset the BMS, fingers crossed
Cold weather will bring increasing battery issues. That’s my experience with my 23 Hybrid. It’s got to be run on open roads to charge the 12 volt.
Sponsored
Similar threads
