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Great video. Thinking that AGM needs a special battery charger.
Thanks for this video !!!!
what happens when you replace the battery is is necessary to reset the bms?
Very good informative video. My mechanic said all the start/stop system is good for is for Ford to sell more batteries and starters?
Any info on why the sync and touch screen go out when the battery dies … my 2019 Taurus touch screen has a 10-20 second delay in it now after my battery went dead …
I can see ford making their own batteries next with the sensor in the battery to ease this issue… then 500 batts
For me, it is hard to fathom that a modern vehicle that no doubt has at least a 100 amp alternator can not keep the battery charged driving 8 miles one way. Really? That would put Ford off my list. But I digress.>>> Thanks for this video
Thanks for the informative video!
hey whats the 10R80 fix or is there one?
all this technology has been in european cars for years… All the domestic car manufacturers are now going the way of the euro cars with electronics
Did that steering wheel ford emblem's color seriously already rub off?
I'll stick with my 2010 with an optima deep cycle
Excellent timing, I've been dealing with the system off to save battery for awhile now. Excellent explanation on it 👍
When I get to work three miles away, I turn all accessories off, hold the throttle wide open to charge the battery while I have a smoke, finish my coffee and read the latest issue of "Bigguns". Thanks, Ford.
Wait a second so you can't drive this vehicle if you make short trips? Something is very wrong here in the design of these vehicles if you can't make short commutes. I've been making short commutes for years with lots of vehicles with no problems at all with charging. Ridiculous problem to have.
Is there more than one in any of the models? I’ve seen in some diagrams that my 2016 Focus has one somewhere on the power wire from the alt as well as the one on the negative terminal…wouldn’t think more than one would be necessary, though.
Also, this video is long overdue! So many people out there don’t understand this concept. I have to explain this to people all the time in the car audio community because they’re constantly grounding directly to the battery and then having the battery saver issues or sulfation on the negative terminal due to undercharging. Even the manual, at least the Ford manuals, states to never ground to the battery post, but rather a grounding point nearby. But who reads their owners manual anymore, right? 🤦🏼♂️
Another great video
If truck is off/asleep when charging is there any reason to charge through the sensor vs direct to the battery posts?
How about an update on your Dodge eco diesel. Do you still like it? How's it holding up? Any concerns or comments about it? Just curious
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Had to change the shift tube bushings on my old f-150 the other day. Checked your previous vids and just wanted to say thanks. Easy- peasy. My sister looked at me in horror as I explained I had to drop the steering column. I'm like no, no I watched this video on you tube. LOL
This is nothing more than piss poor engineering; the electrical generation system should be able to provide for use loads as well as maintain the battery(ies) no matter the use time window. With pwm/variable freq gen systems being in use for ages now this can be achieved with minimal impact on fuel efficiency . Also having to place external charging outside the bms (as opposed to battery direct) indicates the state of charge is estimated based on current in/ out and temp vs an actual state of charge . A capacitance test prior to starting at power up would be Ideal as an added bit of info for the system to optimize the operation, the system could also have a learned algorithm to aid in its operation. Tsk Tsk Tsk ford engineers . Great video as always !
To much bs systems on autos nowdays. Just a way for them to charge high prices for them.
Back in April of 2015, I ordered a new 2016 Lincoln MKX. The battery in that vehicle lasted about a year and a half. At that time, I was told by the dealer “Lincoln said you’d get a battery, but not how good it would be.” They also said if you weigh the OEM factory battery against it’s Motorcraft service replacement you’ll find that the replacement weights considerably more. In April I ordered a new 2019 Nautilus and that battery lasted about two years. I knew that something was up because the auto start/stop was intermittent and the power port that powered my dashcam would shut down immediately when I shut off the vehicle. Now here’s something funny with the ’19 Nautilus, after so many minutes the BMS turns off everything in the vehicle (even if you in the vehicle) with the exception of the power seats. Go figure.
I have a 1986 Lincoln Mark VII that I purchased new. That car doesn’t get much use these days and so I disconnect the battery. I put it on the trickle charger (battery saver) about two to three times a year.
That battery is now ten and a half year old, installed in June 2012. AND yes it’s a Motorcraft battery.
Is this BMS on the diesel 6.7's also?
More unnecessary garbage. They keep over engineering crap design to fail
So that's why my truck fails to start from the key fob sometimes.. And my lights go off shortly after the key is turned off.
learned Something today,,,,,,thanks. enjoy your videos
I have A 12 with 45000 miles on it. Don't drive it much.
Great video as always but..So we have a truck owned and driven by a talented Ford Service Mechanic that needs to be charged once a week..Ridiculous!! Questions are:
What is using 18 amps with the key on engine off?
How about Ford install a larger alternator to handle the "advanced" loads?
How about Ford consider a feature that would leave the engine running at a fast idle at the end of each short trip to maintain battery charge?
I'm sure other makes have the same issues but really resent the imposition of these "advanced" systems. As far as I'm concerned, auto start stop stays turned off permanently!! An aside..Many folks have short drives to work especially now that many work from home, (except @ Twitter). I'm sure EVs will solve all these issues!?
To people who said "first" I really wish that it wasn't a word
Are you sure it doesn't have a battery drain on the battery. Something is staying on. And it's pulling too much voltage.
Thank you Brian! You explained this system better than anybody else has. But, maybe you forgot to mention, someone in the comments made a point about resetting the system after battery replacement.
Just go to an alternator shop and get one that is bigger
Should someone install a Battery Tender to keep the battery topped off in this same situation?
I wired a 3amp fuse next to the battery & them to a connector so I can plug 🔌 in a trickle charger. Both my low use cars are fine with this. Only thing is I have to remember to unplug and plug on return. Cars are happy and batteries last a very long ⌛️ time.
I’m not much of a mechanic (diy guy) but boy do I miss the simplicity of the old vehicles. More added features/things just means more possible issues and trips to paying a professional.
This explains why my sister-in-law’s 2019 denali battery keeps going died. Thanks for the info.
'How the Ford bms system works'
It's on a ford send that pos to the dealer
some day manufacturers will learn you need to put 400 amp alternators in these trucks. 10 miles should be plenty to charge up a battery.
Had that kind of problem with my old chevy 4wd that spends a lot of time idling at night in the snow , lights on , heater fan and cooling fan on and sometimes the winch. So I just put a smaller diameter pulley on the alternator so it would spin a little faster problem solved. Who knows what trouble that would cause on a new computer controlled rig .
how ironic you post a video about batteries in F150's . i hope Brian or maybe someone reading mu comment can shed some light on what i am and have been experiencing with my 2015 F150 XLT 3.5 ecoboost twin turbo . i bought the truck with 29000 miles on it back in 2019 . i live in southern california but it gets cold and can and does snow where i am . the first year i owned the truck the battery went dead . didnt think much of it and bought the best battery i could find . didnt have and trouble until the next winter in 2020 . went out and it was dead jumped it and drove it . still didnt think much of it seeing as i drove everyday and for usually about an hour to work it was fine . its now 2022 and i have not been driving everyday . it can sit for three or four days and thats all it takes . the truck either wont start at all or turns over slowly and starts . now i have had the battery checked and the charging system checked both are fine . i now put it on a battery maintainer if i know i am not going anywhere for a few days but i shouldnt have to do that . any ideas whats killing my battery ?
I’m getting constant messages from Ford Pass App saying new F250 is in deep sleep, Remote features disabled. Even with battery charger on battery. Any insight on what might be the problem? 2batteries on 6.7 powerstroke.
Wait, if it knows how much actual draw is on the battery, the voltage, the temp, and has computers that know how long the draw happens, shouldn't it be able to actually tell how good or bad a battery is without the age being an issue? Plus we know the % of a batteries charge based on voltage a computer shouldn't be having to guess at that. Also, since most vehicles now have computer controlled alternators why would it disable anything unless it is charging the battery or has detected a battery fault? Just seems like a way over complicated useless system.