'22 Hybrid - still deep sleepin'?

[Dad]

If you do a search on my other recent posts, you will see the research I have been doing over the last month. The gist of the research is:

1) It is hard to get an accurate voltage reading on the battery. If you just lift the seat and test, the reading WILL be wrong (by up to about .3V). If you get in and lock the doors, the voltage will change 3 or 4 times over a 3-4 minute period as things slowly turn off. What you care about is the battery voltage with everything off.
2) If you turn absolutely everything off and lock the doors, the truck will loose about .05V per day sitting in your drive-way. If I don't lock the doors, I loose closer to .1V per day. Before I turned everything off, I was loosing up to .2V in a day (but it normally was only about .1V).
3) The battery management system is programmed to NOT fully charge your 12V battery (I assume Ford does this for some perceived safety reason since lead-acid batteries need to be fully charged for longevity). It will give the battery maximum volts/amps until it gets to about 80%-85% and then trickle charges from there. A 250 mile drive will get you up to about a 90% charge on a 100% good battery.
4) Lead acid batteries don't like being less than 80% charged and will start to sulfate. At 50% charge this sulfation increases rapidly. If left at below 12.1V for any length of time, the longevity of your battery is decreased dramatically. A battery tester (I use a TopDon 101) is a good investment and will give you are pretty good view on the health of your battery.
5) The generaly consensus is that deep sleep occurs when the battery is around 11.8V (roughly 25% capacity left).

I live in the country so just rigged up an outdoor solar charger in front of where I park my truck. If I am not planning to drive for a few days, I just put on the solar trickle charger and it keeps the battery at 100% (12.58V).

Thanks for the detailed post. I keep my truck in the driveway, as well and have considered a solar trickle charger (I have one attached to my stored RV), but I have a concern of where to connect it on the hybrid. Do you have yours connected directly to the under seat battery or to the alternative connections under the hood?

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[Old Fart]

My deep sleep problem disappeared when I ditched FORD PASS or maybe now I'm not being badgered by the F'ing program.

 

[RockHoundTX]

Thanks for the detailed post. I keep my truck in the driveway, as well and have considered a solar trickle charger (I have one attached to my stored RV), but I have a concern of where to connect it on the hybrid. Do you have yours connected directly to the under seat battery or to the alternative connections under the hood?

I have used a solar BatteryMinder for several years and it has brought at least 2 batteries back to life. Expensive but I would generally recommend it. I always charge from under the hood at the jump points. It is more convenient and there is a theory here on the Forum that it is safer (due to BMS and potential fuses). There does seem to be something different with each method since I do get very slightly different voltages under the hood vs under the seat that can't be explained by just the resistance of the wire between them. That being said, measuring voltage on the Maverick is extremely hard because of all the stuff that randomly turns on and off (so could be that one extra sensor [seat-belt sensor?] is turned on when I get in the vehicle to check under the seat).

 

[Dad]

I have used a solar BatteryMinder for several years and it has brought at least 2 batteries back to life. Expensive but I would generally recommend it. I always charge from under the hood at the jump points. It is more convenient and there is a theory here on the Forum that it is safer (due to BMS and potential fuses). There does seem to be something different with each method since I do get very slightly different voltages under the hood vs under the seat that can't be explained by just the resistance of the wire between them. That being said, measuring voltage on the Maverick is extremely hard because of all the stuff that randomly turns on and off (so could be that one extra sensor [seat-belt sensor?] is turned on when I get in the vehicle to check under the seat).

Your answer is very much appreciated! I have one more teeny tiny request. Can you post a pic of how you have the charger connected to the jump points under the hood?

 

[Grim_Skunk]

I've never had the issue myself... but reading up on Super Duty forums, seems like flashing the BCM module was the fix, at least for them.


https://blueovalforums.com/forums/index.php?/topic/74347-ford-pass-deep-sleep-mode/&page=2

 

[RockHoundTX]

Your answer is very much appreciated! I have one more teeny tiny request. Can you post a pic of how you have the charger connected to the jump points under the hood?

Photo is already here:
Here are the 2.5 Hybrid Maverick jump start locations | MaverickTruckClub - 2022+ Ford Maverick Pickup Forum, News, Owners, Discussions

Just pull on the top of the red tab to expose the gold-ish colored positive post.

 

[Dad]

Photo is already here:
Here are the 2.5 Hybrid Maverick jump start locations | MaverickTruckClub - 2022+ Ford Maverick Pickup Forum, News, Owners, Discussions

Just pull on the top of the red tab to expose the gold-ish colored positive post.

Thank you!

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