JakeFlorida

Member
First Name
Jake
Joined
Mar 28, 2021
Messages
5
Reaction score
7
Location
Florida
Vehicles
2021 F150, C3 Vette
Randomly my truck would be unlocked more often than locked when I checked (no remote in my pocket). My truck also drained the battery one night down to 8V. After bringing the truck in, they reloaded all programs including new versions for lights/ windows. I have not had either issue since the software update. I also had an electric trailer brake module toast during this event. Part just came in and getting replaced this week. If you experienced the battery drain issue, you should definitely bring it in for a software update/ re-flash.
 

Smitdog

Well-known member
First Name
Bill
Joined
Sep 18, 2020
Messages
282
Reaction score
215
Location
Michigan
Vehicles
2021 F150 Limited PowerBoost Smoked Quartz
Occupation
Gainfully Retired
Randomly my truck would be unlocked more often than locked when I checked (no remote in my pocket). My truck also drained the battery one night down to 8V. After bringing the truck in, they reloaded all programs including new versions for lights/ windows. I have not had either issue since the software update. I also had an electric trailer brake module toast during this event. Part just came in and getting replaced this week. If you experienced the battery drain issue, you should definitely bring it in for a software update/ re-flash.
Do you know if they just reloaded programs, or specifically applied this TSB?

I just want to make sure the flash update is available before taking my truck in (I experienced dead battery after vehicle sat for 10 days).

Thanks...
 

Smitdog

Well-known member
First Name
Bill
Joined
Sep 18, 2020
Messages
282
Reaction score
215
Location
Michigan
Vehicles
2021 F150 Limited PowerBoost Smoked Quartz
Occupation
Gainfully Retired
So I had TSB 21-2097 applied at the dealership today. Only took 45 minutes. Time will tell if it prevents the battery from draining. Vehicle will soon be sitting for 5-6 days, will update after that time.
 

King Ranch60

New member
First Name
J.S.
Joined
Mar 22, 2021
Messages
4
Reaction score
5
Location
Hellinois
Vehicles
2021 F150 King Ranch
Occupation
Retired
Took mine to the dealership yesterday, waited for it and according to the service paperwork they found the TSB, did the the necessary download(according to the service writer) charged the battery. Now time to wait and see if it works.
(p.s. Thanks for the TSB pdf unixadm!)
 

dtankman

New member
First Name
Don
Joined
Mar 28, 2021
Messages
1
Reaction score
0
Location
Fort Mill, SC
Vehicles
2018 F150, 2017 Escape, 2014 Focus, 2004 F150
Occupation
Management
Is there anything like this about the 2018 XLT? I bought mine last Fall, and several times during the winter (in SC...so not really even that cold) I would get a message the remote features had been deactivated. I suspect it could also be due to a lower rated (CCA) battery that could cause it.
 
OP

unixadm

Well-known member
Joined
Feb 15, 2021
Messages
145
Reaction score
172
Location
Elk Grove, CA
Vehicles
2021 F150 Platinum PowerBoost FX4
  • Thread starter
  • Thread Starter
  • #7
Is there anything like this about the 2018 XLT? I bought mine last Fall, and several times during the winter (in SC...so not really even that cold) I would get a message the remote features had been deactivated. I suspect it could also be due to a lower rated (CCA) battery that could cause it.
Likely a bad/weak battery, along with needing the Battery Management System (BMS) reset. I had a 2018 Lariat and put a new battery in it a few months back from AutoZone (AGM). I also used Forscan to reset the BMS. No issues after that. My truck nearly left my stranded after a 45 minute drive, so I knew something was up. Previous to that I was getting the messages that you mention.
 

Smitdog

Well-known member
First Name
Bill
Joined
Sep 18, 2020
Messages
282
Reaction score
215
Location
Michigan
Vehicles
2021 F150 Limited PowerBoost Smoked Quartz
Occupation
Gainfully Retired
Left truck at airport for 6 days, started right up upon return, so assuming the TSB 21-2097 flash update fixed the battery drain issue.
 

Advertisement





 


Advertisement
Top