Good morning

I have been having this issue on my brand new F-350. Only 58 miles. Have had a week today. Getting multiple messages of deep sleep mode. I did check my battery yesterday and it was a little lower then normal. Batteries could be sitting on a pallet at the factory for who knows how long. So I put a tender on it and let it charge until full This morning, checked voltage and started truck, everything seemed fine. About 20 mins later I receive another notification. I really was thinking an app issue at this point. So I just called my service advisor and he has informed me that they just went through this issue with another gentleman's truck last week and after working on it all day and working with Ford. That it looks like Ford did not install some sort of battery monitor in these new trucks and didn't even tell the dealers. This monitor relays the voltage info to the app and without it the app just trips the deep sleep mode. They also say a fix is suppose to happen in October but he said he didn't know how for sure and thinks Ford will just update software also. So this makes me believe that they will just take that feature out of app to eliminate this issue all together and we just wont have that low battery alert feature anymore. I guess we will see. Its not that big of a deal but annoying just the same. Just wanted to pass this info along incase someone else may be experiencing the same issue.

 

i bought two trucks that were made less than a week apart. one is fine and one does that deep sleep **** constantly. haven't checked my battery voltage because i don't much care but it doesn't make happy, either

 

My 22 250 does that "sometimes" . It can sit 2 weeks and nothing. It can sit less than 24 hrs and I get that message

 

my recently gone 21 250 PS had the same issue for months.
they ended up changing the BJB as part of some campaign .
it seems the BJB was not turning stuff off as required , it made a big improvement.
and the truck using the agm batteries only charges them to 80 to 85 % you can change that to 95% with forscan that made a world of difference even after sitting 5 days

and my 22 f150 had similar problems and they put in the correct battery 800 cca vice the 720 cca that was specified by ford in the build specifications.and changed charge to 95% now i have zero issues with battery

 

My truck does this all the time too, pretty aggravating. I'm keeping a lithium jump starter in the back just in case. Nothing has died and no issues other than the random "Remote unavailable " messages. With 2 alternators in summer the batteries shouldn't be having any issues.

 

I have the same issue. Tried changing in Forscan, did not work. Below is the thread on what to change:

https://www.ford-trucks.com/forums/1...l#post19761534

 

Take one battery out of the circuit and deep charge it, put it back and do the other, or do both at the same time if you don't mind resetting everything. The batteries need a good deep charge after sitting, and only a really long drive can do that. Short drives and long park times eventually wear the batteries down enough that a long drive is needed. The batteries need that last 15% of charge trickled into them to prevent them from boiling and outgassing. On typical drives, the batteries get to 85% and hold, then slowly charge to full the longer the truck is driven.

 

my truck only has one battery and i drove it 4 hours to get home

 

Not long enough. It takes a good 24 hours to fully charge a battery.

 

I just did a long drive the day before yesterday. Next morning, truck went into deep sleep mode....

 

My 3 week old F350 6.7 has done the "deep sleep" thing a few times too. What the OP says is plausible and I doubt it has anything to do with actual battery voltage but I haven't checked...the truck starts up and runs fine and there is no sign of an issue other the App notification.

acdii; is there any issue using a maintenance charger on the batteries (one at a time) while they are still hooked up? Or I could put two maintenance chargers on each battery at the same time? I've done it on my sportscars but they all had one battery....

Thanks,
Dave

Dave

 

I have used my Stanley charger to charge 2 batteries hooked up, but they never really got the full charge due to the vehicles parasitic draw. The charger I use has a desulphate mode, which deep cleans the battery, as well as a deep charge cycle and only works if the battery is disconnected. I am not happy with the results from it though as it takes forever to desulphate and doesn't really help. My next purchase will be one from here, https://www.batteryminders.com/

As far as hooking up without disconnecting the truck, as long as the charger is pure DC out, go for it, it will still do the job, but don't hook two of them up at the same time as they will cancel each other out if they are smart chargers. Plain dumb rectifier chargers would probably work, but those are not clean either and can induce AC into the wiring. They work wonderfully on our 1995 Mercury Grand Marquis, but with all the electronics on these trucks today, I wouldn't want to risk a dirty pulse into the CANBUS from a charger.

Majority of smart chargers today use circuitry instead of a massive transformer to drop the voltage to 16 and create pure DC as well as to sense the charge capacity of the battery, and a really good one could charge two in parallel.

 

Thanks; I wouldn't use my old charger - I don't trust it around sensitive electronics. Sounds like it might be a good idea to simply unhook the leads on one battery at a time and charge that way with my smart maintenance charger - I assume as long as either battery remains hooked up, there is no reprogramming, etc. necessary as it will keep the "system" minimally powered?

cheers,
Dave

 

Thats how I do it, one at a time.

When the AGM in my 2018 started to fail from sitting, it is what I did and was able to get another year out of it before it failed to replacement. As long as the cells don't drop below a certain value, these chargers can resurrect most batteries. Having had a few Hybrids in the past and studying how the battery management system works I gleaned a lot of information on how they are able to make the cells last for so long, and realized that same technology is used on our cars and trucks now with the BSM. They maintain 85% charge, and trickle in the rest so as to not damage the cells. If you go to 95% it does put more charge in, at the expense of creating more heat in the cells and outgassing. Can't have it both.

One other thing the smart chargers do is stop charging for a bit, let the battery rest so the voltages between cells stabilizes, compares values and applies more charge. The car system doesn't do that though, which does lead to the problems appearing in this thread. It also doesn't high volt the battery either, which the smart chargers do. They go up to 16 volts DC during the charge cycles.

 

My 2022 F250 has the same problem. I have had it for just over a month and since day 1 it goes into Deep Sleep Mode every time I lock the truck. I get a notification on the app before the mirrors even auto fold!

Just picked up the truck today as it has been at the dealer the last couple of days getting some items installed that I ordered, and I told them about this issue. They checked the battery and consulted with Ford, they told me battery is fine and that Ford is aware of the issue and planning a software update in October. I have no issues starting the truck, it's just the annoyance of the app notifications and lack of remote features.