Deep Sleep Poll Hybrid Owners

[Tom201326]

Does the plastic cover still fit on top of the battery after you installed the AGM battery? I noticed that you had to increase to an H4 size battery since they don’t make a T4 battery in AGM.

Yeah, it's almost the same as the OEM battery

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[Pop2020]

Had my '22 Lariat for about 18 months and just short of 22k miles...the Ford Pass app deep sleep messages have popped up for the first time over the last week. No other issues with the truck. I'll have to wait and see if any other symptoms start to appear.

 

[CanadaGuy]

Model year 2022 and 2023 Hybrid owners have you had any issues with deep sleep/ dead battery or even messages in Ford Pass indicating an issue? Vote yes or no according to your model year.

I would just like to get a feel from the MTC community on how big an issue this really is.

I knew it was a common issue but until seeing the result of this poll I had no idea how widespread it actually was. Ford’s silence is very discouraging

 

[Tom201326]

After dealing with Deep Sleep for 1 month, I pulled the trigger on an AGM battery. A bit pricey, but we'll see how it goes after the computer relearns the battery

A quick update on the battery situation.

So far, it's holding voltage perfectly fine, not tanking down to the 11V area after parked for hours. Voltage on the cigarette lighter reads 12.2-12.3V, although Torque shows the voltage a bit higher by .2 (I choose to monitor the voltage through the OBD port).

The Maverick does not appear to have any Deep Sleep symptoms (well, except for FordPass, but that's still an ongoing story), as the interior/exterior light turns on when unlocked. Furthermore, after a short drive, the interior light does not go dead after 10 second, which is a good sign.

After driving around for a while, the voltage stays in between 12.7V-12.5V, again another good thing, since the old battery will drops down to 11.9V no matter how long I drive.

I'll keep everyone updated, but so far, the AGM battery is a huge improvement.

 

[acapaldi]

Just as a data point, my Base XL hybrid has no heated seats or mirrors or anything and I get deep sleep all the time on my MY23. Drive it daily. Replaced OEM battery under warranty and 3 days later deep sleep again. Started happening at like 5k miles for me I think.

Dumb question, was BMS reset after they installed the new battery? If it wasn't reset the truck complains about the battery level being "Out of Range". I think that impacts charging behavior? In my screenshot below it was only getting 1.00A. Don't think it ever gained any % charge while running around in that state. But I didn't keep it there for long.

The trucks already can't charge their 12V batteries very well, if the dealer gave you one partially charged and didn't reset your BMS so it actually knows to charge it, I could see it going back into deep sleep pretty quick. Might want to fully charge the battery, reset the BMS system, wait 8 hours, take it for a drive. Might help?

Re: the heated seats, mirrors, drive modes etc. impacting charging. Another data point, I have all of the above and typically drive with it on. I've had FORScan running next to me live monitoring my battery charge level and how many amps it's getting for the last month. Flipping between drive modes, turning on/off heated seats doesn't impact the charge amps going to the battery. The number doesn't go up/down in response to me turning these options off/on.

That isn't to say that the battery maybe doesn't gain charge faster with these options off, but I don't know of a good way to test that. Almost need to start a timer when it gains 1%, then stop it when it hits the next 1%.

 

[Hkak45]

Dumb question, was BMS reset after they installed the new battery? If it wasn't reset the truck complains about the battery level being "Out of Range". I think that impacts charging behavior? In my screenshot below it was only getting 1.00A. Don't think it ever gained any % charge while running around in that state. But I didn't keep it there for long.

The trucks already can't charge their 12V batteries very well, if the dealer gave you one partially charged and didn't reset your BMS so it actually knows to charge it, I could see it going back into deep sleep pretty quick. Might want to fully charge the battery, reset the BMS system, wait 8 hours, take it for a drive. Might help?

Re: the heated seats, mirrors, drive modes etc. impacting charging. Another data point, I have all of the above and typically drive with it on. I've had FORScan running next to me live monitoring my battery charge level and how many amps it's getting for the last month. Flipping between drive modes, turning on/off heated seats doesn't impact the charge amps going to the battery. The number doesn't go up/down in response to me turning these options off/on.

That isn't to say that the battery maybe doesn't gain charge faster with these options off, but I don't know of a good way to test that. Almost need to start a timer when it gains 1%, then stop it when it hits the next 1%.

This is possible. How would I know if they reset the BMS? Also how would I reset it after charging the battery?

 

[Mav_RICK]

This is possible. How would I know if they reset the BMS? Also how would I reset it after charging the battery?

 

[Mav_RICK]

Thank you for this. If it's also supposed to sit for 8 hours they definitely didn't do that at dealer as I took the vehicle back home like an hour after they put the new battery in it

This video is definitely worth a watch as well.

 

[Chicolini]

I never installed Ford Pass. I have turned off all of the location and communication settings. I have never had a deep sleep issue. Coincidence?

I believe it is quite possible that the 12-volt batteries are being drained by Ford trying to post computer system updates, that fail, then loop endlessly, which kills the 12-volt battery. I read about this on MTC, so it may or may not be true.

I have had problems making payments to Ford Credit. When I use my laptop, the program goes into a loop. The Ford Credit help desk suggested a number of things that didn't help. They also suggested that I use a different computer, which was successful. I have concluded that Ford computer systems may not be infallible.

 

[Mav_RICK]

I never installed Ford Pass. I have turned off all of the location and communication settings. I have never had a deep sleep issue. Coincidence?

I believe it is quite possible that the 12-volt batteries are being drained by Ford trying to post computer system updates, that fail, then loop endlessly, which kills the 12-volt battery. I read about this on MTC, so it may or may not be true.

I have had problems making payments to Ford Credit. When I use my laptop, the program goes into a loop. The Ford Credit help desk suggested a number of things that didn't help. They also suggested that I use a different computer, which was successful. I have concluded that Ford computer systems may not be infallible.

That’s as good a theory as any. It would interesting to hear if anyone without Ford Pass is having deep sleeps.

 

[cyberdog]

Should hopefully end deep sleeps. So far, so good.

 

[acapaldi]

That’s as good a theory as any. It would interesting to hear if anyone without Ford Pass is having deep sleeps.

Turned off Fordpass, Wi-Fi, and automatic updates on mine sometime back in April-ish. Started having deep sleep issues with the second battery a few months after it was installed. I could tell because the interior lighting doesn't come on. Disabling the networking stuff is a step in the right direction, it's one less load on the battery, but it isn't the whole problem.

This video is definitely worth a watch as well.

Interesting to note, the tech in the video says his F-150 goes into deep sleep/drains its battery being driven to/from work 6 minutes/day, with the occasional trips on weekends. My commute is 8-9 minutes/day. So driving a modern Ford every day on short trips will not keep the battery charged.

I've plotted charge amps/time on longer trips. On one trip, with my old battery, charging stopped 18 minutes into a 33 minute drive, 0-1A going to the battery. I gained 3% on that trip. That was like my best one too, most of the time it'd quit charging before I made it home, so ~8 minutes of charging/trip. So, with my stock battery, driving the car on longer trips, it'd stop charging midway in. It doesn't charge the whole time.

So, you have to drive it more than twice per day, for longer than 8 minutes each. But the trips cannot exceed 18 minutes or the battery won't continue to charge. Cracked the code guys!

Seriously though, on my most recent long trip, with an AGM battery installed, the system stayed charging for 1.5 hours and the battery gained 13% charge before the system quit charging it. I also gain charge faster and see more amps going into the battery (?) when commuting. Continuing to monitor it in hopes this will be a "real" fix. It has been able to sustain it at ~70%. But with the holidays my driving patterns are all messed up. Need a few quiet weeks to see if it'll stay there.

 

[acapaldi]

This is an interesting observation. I drive my maverick about 60 miles a day and that could explain why even on my long commute the battery still doesn't charge full.

Aforementioned plot, data recorded on 12/01/23 with Motorcraft FLA battery installed. Started charging at 6 amps, tapered off around halfway in. Started from 45%, finished at 48%. Gained 3% charge. First hit 0 charge amps ~14.5 minutes in.

w/AGM battery, data collected on 12/25/23 with Diehard H4 AGM battery installed. Trip as roughly 3X as long. Started charging at 9 amps, tapered off maybe 2/3 of the way in? Starting from 63%, finished at 76% Gained 13%. First hit 0 charge amps ~51.4 minutes in.

Same observed behavior, both taper off, but for whatever reason the AGM took longer, and started with a higher initial charge amperage. Despite the FLA battery starting with a lower SOC.

I don't know why/how it decides when to quit charging. I would have thought it was as simple as, "If below target (80%), charge. And give more amps the further below target" Not the case.

This was all highway driving btw, no stopping etc.

 

[Packer Bill]

This data supports the theory of being a software issue as part or most of the cause. Apparently the BMS is not smart enough to continue to charge until 80% is reached....

 

[cyberdog]

Having pulled my factory battery on Saturday, it's pathetic. I charged it after removal, let it sit for the float charge to dissipate, took a reading. On Sunday I checked the voltage and it was .5 lower with nothing connected or drawing current.

Replacement sat in the vehicle and the voltage was .01 volts lower over the same time, and that was with the typical communications period after having had the ignition on and performing a BMS reset. (I did reprogram the BMS for a 60a battery in an H5 shell, so it wouldn't go crazy with the higher capacity battery). That's also powering the low-draw BT Battery Monitor. (Factory was checked with a DVOM).

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