1st Battery Saver Mode since AGM Install

[Finnster]

Lock doors and leave alone for 8 hours is the last step.

Do this:
1. Make sure battery is fully charged.
You have 30 seconds to complete steps 2, 3, and 4.
2. Key on engine off (accessory position). I think for push button it is tap the start button without foot on brake?
3. Flash high beams 5 times.
4. Pump brake pedal 3 times.
If successful, the brake warning light on the dashboard will flash 3 times.
5. Remove key, lock the doors and do not disturb for 8 hours.

Thanks Sturdy Beast!
I was thinking that there was a change for MY25.

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[A Sturdy Beast]

Thanks Sturdy Beast!
I was thinking that there was a change for MY25.

Oops, for all I know there might be a change for 2025 / 2026.

 

[Neils Bohr]

Hope it's not too intermittent - so it doesn't take a stinking long time to discover it.

The only posts I've seen on parasitic draw found, ended up being the TCU.

I can't recall right now if the fuse is only for the modem, and the TCU is still powered for the other communications going on - so it could still flip out causing a drain.

I'm sure whatever system wants to send up the data report on parking to Ford, is supposed to time out if there is no modem connection (since that can be very possible), but another malfunctioning module could get stuck attempting to send when it literally cannot.

Much like the ACCM you mentioned getting an update on.
Forscan Lite doesn't make it easy to look at trouble-code time stamps - but 1 time I did determine the ACCM error of communication failure with the PCM/ECM, occurred after turnoff, when the PCM/ECM was likely done receiving info and not communicating.
I'm assuming the issue was only flagged after multiple attempts failed - but what if it kept going?
Is that what the ACCM issue was?

I've also seen the ACM (Audio Control Module) with a similar internal error, much less frequently, but can't figure out if it's just a blip or is it really trying when the truck has been off.

It is not intermittent. It has been sitting at the dealer lot for a few days because they were closed for Christmas and Boxing Day. Within 20 hours of sitting there I got a low battery alert on the app. I'm positive it will be dead by now. Let us see what they say as they will look at it tomorrow. One of the modules you mentioned must be staying on.

I hope this is fixable as I really love my Mav. If it continues I might trade it in for a Honda Ridgeline. But I will Give them a chance to fix it.

 

[Neils Bohr]

I have had zero 'sleep' problems with my 2025 Hybrid.

I didn't;t have any problems with my hybrid until the truck was two years old.

 

[Gunnar88]

I just saw the Battery Save Mode on my 22 hybrid for the first time on the app tonight at 37000 miles I never had any issues whatsoever, original battery, I drove it about 10 miles today so it hasn't been sitting. The only issue Ive had at all was the clunky half shafts that were replaced under warranty.

One guy mention the replacement battery he was running earlier in the thread. I am thinking my 12v battery is dying, and at 39 months that makes sense. What battery should I replace it with? I run Odyssey batteries in my motorcycles and they do make an H5 but it is $356. and Im not really feeling that!

Should I charge up my original battery up with a trickle charger and then run the reset procedure?

Is the reset procedure mentioned above, stated for a 2025, the same for my 2022?

My original battery isnt an AGM, what kind of battery is it? My trickle charge specs different settings, like AGM, Lithium.

 

[johnDeere]

I just saw the Battery Save Mode on my 22 hybrid for the first time on the app tonight at 37000 miles I never had any issues whatsoever, original battery, I drove it about 10 miles today so it hasn't been sitting. The only issue Ive had at all was the clunky half shafts that were replaced under warranty.

One guy mention the replacement battery he was running earlier in the thread. I am thinking my 12v battery is dying, and at 39 months that makes sense. What battery should I replace it with? I run Odyssey batteries in my motorcycles and they do make an H5 but it is $356. and Im not really feeling that!

Should I charge up my original battery up with a trickle charger and then run the reset procedure?

Is the reset procedure mentioned above, stated for a 2025, the same for my 2022?

My original battery isnt an AGM, what kind of battery is it? My trickle charge specs different settings, like AGM, Lithium.

With the kind of miles on your truck and the year it is, it’s doubtful that charging it is going to bring back the life it used to have. I bet it’s pretty well sulfated.

 

[Maverick Country Club]

This battery problem really stinks for a lot of you, hopefully this is resolved soon.

 

[MakinDoForNow]

I just saw the Battery Save Mode on my 22 hybrid for the first time on the app tonight at 37000 miles I never had any issues whatsoever, original battery, I drove it about 10 miles today so it hasn't been sitting. The only issue Ive had at all was the clunky half shafts that were replaced under warranty.

One guy mention the replacement battery he was running earlier in the thread. I am thinking my 12v battery is dying, and at 39 months that makes sense. What battery should I replace it with? I run Odyssey batteries in my motorcycles and they do make an H5 but it is $356. and Im not really feeling that!

Should I charge up my original battery up with a trickle charger and then run the reset procedure?

Is the reset procedure mentioned above, stated for a 2025, the same for my 2022?

My original battery isnt an AGM, what kind of battery is it? My trickle charge specs different settings, like AGM, Lithium.

Good morning, I have a 2022 also. Ford calls the OEM batteries "enhanced". The original battery was a 24 month battery. Ford has the same size battery BXT99RT4-A in a red label MAX series 36 month. It has a higher AH rating. Presumably since the 22-24 mavericks came with settings showing AGM the enhanced batteries were designed (at least for fords BMS programming) to be charged at least below 85% like an AGM, only Ford knows. In any case charge it like a flooded battery with your smart charger. Ford replaced my OEM with the MAX series at 34 months and it has been working for almost one year. I do place my noco g5 on truck about every 60-90 days for at least 3 days. Before installing the high dollar AGM read the warranty fine print paying attention to limits when installed in certain types of vehicles. (Do new batteries have internal memory recording charging history??). I do have a second 2022 XLT lux package Maverick with the OEM. Truck is seldom driven (6300 miles). Spends lots of time on noco charging to above 12.7. lots of people reporting new cheaper AGM successful but no history over 2+ years, yet.

 

[Gunnar88]

i went out this morning to check the voltage and i had to key open the drivers door and could t even manually unlock the passengers door, i had to leave for an appointment before i could figure that out.

 

[KirkyMav]

Correct me if I’m wrong but:

There isn’t anything “wrong” with battery saver mode. It was intended to do exactly what it is called - save the battery. It is supposed to come on when the battery is low OR when the battery has been sitting. It was intended as a feature. Not a bug.

What is a problem is batteries draining and dying. Battery saver mode is just an indicator of THAT problem.

If you have an AGM and it’s been sitting, it may still enable battery saver mode. What hopefully won’t happen due to the larger capacity is it draining or dying.

TLDR: It turned on likely because you were sitting not because the battery is dying. Correct me if wrong.

 

[AZMAN]

22 Maverick Hybrid 8K miles total! First factory battery didn't hold charge well at all after 2 days it was down to like 11.7 volts! I installed a new AMG battery and today after the truck has sat for 2 days the voltage drops to 12.0 or 12.1 ! I have a digital voltage unit plugged into the 12 volt socket it reads 14.7 volts when I start the veh and it fully charges the 12 volt battery to 12.8 volts! I have wifi disconnect I lock the doors after use as the truck sits in the garage with hood open I do a battery voltage check with a VOM every 12 hours At first its 12.8 then 12 hours later its 12.6 then 12.4 then down to 12.0 after say two days! I simply don't get it!

 

[HeyBales]

22 Maverick Hybrid 8K miles total! First factory battery didn't hold charge well at all after 2 days it was down to like 11.7 volts! I installed a new AMG battery and today after the truck has sat for 2 days the voltage drops to 12.0 or 12.1 ! I have a digital voltage unit plugged into the 12 volt socket it reads 14.7 volts when I start the veh and it fully charges the 12 volt battery to 12.8 volts! I have wifi disconnect I lock the doors after use as the truck sits in the garage with hood open I do a battery voltage check with a VOM every 12 hours At first its 12.8 then 12 hours later its 12.6 then 12.4 then down to 12.0 after say two days! I simply don't get it!

You have a parasitic draw if that fast - that's what it is called.

Micro-drain of 25-50 mA is expected during sleep mode (which is max 75 min after final door closed) - and that wouldn't cause the effect you saw.

And that's why there is an SSM for AC module update as what Ford considered the biggest possible parasitic draw.
It's not the only one - but since techs will have instructions - they'll start there.

May still be a warranty repair, or at least free since you are showing what's happening - and it's no troubleshooting on their part.

 

[HeyBales]

i went out this morning to check the voltage and i had to key open the drivers door and could t even manually unlock the passengers door, i had to leave for an appointment before i could figure that out.

You mean the power is that low, that the Unlock button on driver's door won't unlock all the doors?

That's a problem I've not heard before.

 

[HeyBales]

I just saw the Battery Save Mode on my 22 hybrid for the first time on the app tonight at 37000 miles I never had any issues whatsoever, original battery, I drove it about 10 miles today so it hasn't been sitting. The only issue Ive had at all was the clunky half shafts that were replaced under warranty.

One guy mention the replacement battery he was running earlier in the thread. I am thinking my 12v battery is dying, and at 39 months that makes sense. What battery should I replace it with? I run Odyssey batteries in my motorcycles and they do make an H5 but it is $356. and Im not really feeling that!

Should I charge up my original battery up with a trickle charger and then run the reset procedure?

Is the reset procedure mentioned above, stated for a 2025, the same for my 2022?

My original battery isnt an AGM, what kind of battery is it? My trickle charge specs different settings, like AGM, Lithium.

Not H5 - unless you want to modify the truck for it to fit.

H4 is drop in ready size.

 

[kcflynn]

According to Ford, the Battery Saver Mode on all Ford vehicles is activated in 3 situations:
--Battery voltage less than 9.5 volts
--Inactivity for 14 days or more
--Extremely hot or cold weather.

...So after many BSM activations and a battery replacement (with an AGM battery) on my 2024 Maverick hybrid in October, I have been obsessively monitoring the new battery. I got a trickle charger and installed the Ancell BM200 monitor for my iphone. So far it has avoided the dreaded BSM. I have noticed some weird activity on the SOC (state of charge) levels, such as...
--Leaving the door unlocked can cause the SOC to drop (but not always)
--Leaving the tailgate open can cause a drop
--Even when locked, if the key is nearby it can cause a drop in SOC.

I am still trying to figure out how this all works. The Ancell records 5 days of activity. For some reason last Friday the SOC plunged to 34%, so I had to go for a 30 minute drive to bring it back. Since then (and a 250 mile trip) it's been between 70 and 90%. But no BSM!

Consumer Reports had a pretty good article recently on making the battery last for all cars. It covers many of the things I have noticed. Here's a link:
https://www.consumerreports.org/car...ake-your-car-battery-last-longer-a7617960844/

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