Battery Replacement
Thread Starter
|
Laughing Gas
Joined: Feb 2004
Posts: 1,200
Likes: 4
From: Ottawa, Ontario Canada
Battery Replacement
After 4 years in cold climate, I usually change my battery on trucks. With all the new electronics nowadays, on the 2020 do we need to do anything special to retain the various truck memory settings or just disconnect and swap, same as older trucks?
Lead Driver
Joined: Sep 2006
Posts: 7,907
Likes: 143
You have an advanced Battery Control system called BMS.
It monitors the battery over its life for aging, time in service and adjust the way it charges and some other parameters.
The Battery type is AGM and should be replaced with the same type and size.
At that time, there is a RE-SET to be done to tell the BMS a new Battery has been installed and not to treat the new one the same as the old one.
This Re-Set is not done by just powering down but done with a tool or procedure, so the data is not lost from other services that may be required, does not cause data loss on the original in place Battery.
As well, replacing a Battery anytime results in the computer rebooting its program, clearing all learned data but does not Reset the BMS located in a different Module.
.
Charging: Do not use a Charger not designed for AGM uses because the voltage has to be kept down to no more than 14.8 v for AGM charging. Reason is the Battery is sealed Cells and a different internal design and may blow the seals from excess heat of higher voltage charging.
The system is no longer like the old style simple Lead Acid and Alternator systems.
Good luck.
It monitors the battery over its life for aging, time in service and adjust the way it charges and some other parameters.
The Battery type is AGM and should be replaced with the same type and size.
At that time, there is a RE-SET to be done to tell the BMS a new Battery has been installed and not to treat the new one the same as the old one.
This Re-Set is not done by just powering down but done with a tool or procedure, so the data is not lost from other services that may be required, does not cause data loss on the original in place Battery.
As well, replacing a Battery anytime results in the computer rebooting its program, clearing all learned data but does not Reset the BMS located in a different Module.
.
Charging: Do not use a Charger not designed for AGM uses because the voltage has to be kept down to no more than 14.8 v for AGM charging. Reason is the Battery is sealed Cells and a different internal design and may blow the seals from excess heat of higher voltage charging.
The system is no longer like the old style simple Lead Acid and Alternator systems.
Good luck.
Fleet Mechanic
Joined: Jan 2020
Posts: 1,366
Likes: 413
I agree, personally I would do a reset as stated above. That said, I saved a link to an older post, with information from Ford Engineer on Battery Management (see post #27)
So, I am not 100% sure it is completely necessary. https://www.f150forum.com/f118/new-b...460039/index3/
So, I am not 100% sure it is completely necessary. https://www.f150forum.com/f118/new-b...460039/index3/
Mountain Pass
Joined: Apr 2015
Posts: 203
Likes: 16
BM Reset Procedure:Procedure must be carried out within 10 seconds:
1. Switch ignition on (don't start)
2. Pull and release high beam 5 times
3. Press and release brake pedal 3 times
4. If successful the battery light will flash 3 times within the next 15 seconds
5. BMS reset completed
1. Switch ignition on (don't start)
2. Pull and release high beam 5 times
3. Press and release brake pedal 3 times
4. If successful the battery light will flash 3 times within the next 15 seconds
5. BMS reset completed
Laughing Gas
Joined: Jan 2013
Posts: 1,052
Likes: 57
6.5 yrs. and 143k miles.
You can try the light flashing/brake pushing if you want.
In my owner's manual it says you can replace the battery and let the truck sit for 8 hrs. and it should reset itself.
I did the light flash/brake push and then let it sit for 8 hrs.
No issues.
Trending Topics
Lead Driver
Joined: Sep 2006
Posts: 7,907
Likes: 143
I just replaced the battery in my 2017.
6.5 yrs. and 143k miles.
You can try the light flashing/brake pushing if you want.
In my owner's manual it says you can replace the battery and let the truck sit for 8 hrs. and it should reset itself.
I did the light flash/brake push and then let it sit for 8 hrs.
No issues.
6.5 yrs. and 143k miles.
You can try the light flashing/brake pushing if you want.
In my owner's manual it says you can replace the battery and let the truck sit for 8 hrs. and it should reset itself.
I did the light flash/brake push and then let it sit for 8 hrs.
No issues.
The 8 hour time period is for the BMS to learn the new battery state of charge.....only.
This is NOT a re-set action.
Two different actions.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Moderator
Joined: May 2005
Posts: 8,227
Likes: 1,241
From: San Antonio, TX
The first time I replaced my battery I just let it sit for half a day before putting the new one it. I topped of the charge before doing so, they are never 100% when you buy a new one. Anyway, that battery lasted 6 years with no issues all of those years.
Last month I put a new one in. I did the BMS reset sequence this time. Don’t know what good, if any, it will do.
Last month I put a new one in. I did the BMS reset sequence this time. Don’t know what good, if any, it will do.
Lead Driver
Joined: Sep 2006
Posts: 7,907
Likes: 143
The first time I replaced my battery I just let it sit for half a day before putting the new one it. I topped of the charge before doing so, they are never 100% when you buy a new one. Anyway, that battery lasted 6 years with no issues all of those years.
Last month I put a new one in. I did the BMS reset sequence this time. Don’t know what good, is any, it will do.
Last month I put a new one in. I did the BMS reset sequence this time. Don’t know what good, is any, it will do.
For learning, look up Ford Doc 414-00 pdf on Charging System General Information.
Pay particular attention to the repeated notices in bold print about Re-Set and what it is, and why. When to do it and when not to.
Good luck.
Fleet Mechanic
Joined: Jan 2020
Posts: 1,366
Likes: 413
My struggle is, with the online Operations manual for my 2020, under 'changing the battery' it states to let vehicle sit 8 hrs without operation to let system learn the state of charge, and makes absolutely no mention of resetting the BMS.
https://www.fordservicecontent.com/F...&buildtype=web
https://www.fordservicecontent.com/F...&buildtype=web
Moderator
Joined: May 2004
Posts: 6,518
Likes: 917
From: Home Base Nebraska
Denny
5th Wheeling
Joined: May 2023
Posts: 28
Likes: 7
From: Northern California
Amazingly, my OEM Ford battery in my 2015 F150 lasted 8+ years Have never had a battery last that long, but I monitored quarterly with my OBD-II scanner and the battery was still good. (I changed it out at 8 years before leaving it for a month at an airport lot as I was nervous). I use a memory preserver that plugs into the ODB port when changing batteries so all settings are preserved. The Ford Battery Control system will monitor the new battery and adjust as needed after replacement.
Here's the memory preserver I used (on my Ford and a Subaru):
I power it using a spare lawn mower battery, but any 12 v power source will work - remember to look at the indicator lights to make sure you connected to the correct polarity on the spare power source.
Here's the memory preserver I used (on my Ford and a Subaru):
I power it using a spare lawn mower battery, but any 12 v power source will work - remember to look at the indicator lights to make sure you connected to the correct polarity on the spare power source.
Mountain Pass
Joined: Apr 2016
Posts: 183
Likes: 57
From: Middle of Nevada
I had to change out the OEM battery in my 2016 a month ago. And was surprised that after I installed the new battery I didn't have to reset the clock or memory channels on the radio or anything else. I DID NOT do anything, connect anything, to make sure the system had power while the old battery was removed and the new on installed.
Lead Driver
Joined: May 2015
Posts: 5,881
Likes: 359
From: Mts. S. of San Francisco
I had to change out the OEM battery in my 2016 a month ago. And was surprised that after I installed the new battery I didn't have to reset the clock or memory channels on the radio or anything else. I DID NOT do anything, connect anything, to make sure the system had power while the old battery was removed and the new on installed.