Sponsored

2021 F-150 High Voltage Battery Failure / Replacement

dbennett415

Member
First Name
Dustin
Joined
Oct 31, 2024
Threads
1
Messages
5
Reaction score
0
Location
California
Vehicles
2021 F-150 Lariat Powerboost, 2016 Fusion
My truck went down last week with a bunch of warnings. Dealership is now telling me the hybrid motor in the transmission and the high voltage battery need to be replaced. The motor is covered under my warranty, but they said I’m screwed basically when it comes to the battery. They said it’s a $5000 repair.

I did find used batteries in the $1200 range. Is it possible to change these things at home? I know they are buried and not easily accessible, but I’m more concerned about possible software issues or anything along those lines. Just not ready for a $5000 hit to the wallet right now.
Sponsored

 

cofford

Member
Joined
Apr 26, 2023
Threads
1
Messages
5
Reaction score
4
Location
Seattle
Vehicles
2021 F-150 Platinum PB
My truck went down last week with a bunch of warnings. Dealership is now telling me the hybrid motor in the transmission and the high voltage battery need to be replaced. The motor is covered under my warranty, but they said I’m screwed basically when it comes to the battery. They said it’s a $5000 repair.

I did find used batteries in the $1200 range. Is it possible to change these things at home? I know they are buried and not easily accessible, but I’m more concerned about possible software issues or anything along those lines. Just not ready for a $5000 hit to the wallet right now.
The battery warranty is 8 years/100k miles. Are you outside of that window?
 
OP
OP

dbennett415

Member
First Name
Dustin
Joined
Oct 31, 2024
Threads
1
Messages
5
Reaction score
0
Location
California
Vehicles
2021 F-150 Lariat Powerboost, 2016 Fusion
The battery warranty is 8 years/100k miles.

112,000 miles, just missed it
 

cofford

Member
Joined
Apr 26, 2023
Threads
1
Messages
5
Reaction score
4
Location
Seattle
Vehicles
2021 F-150 Platinum PB
I would take a look in the service manual. That would tell you if any software configuration is required. It would also give you procedures for dealing with the high voltage.
 

Sponsored

OP
OP

dbennett415

Member
First Name
Dustin
Joined
Oct 31, 2024
Threads
1
Messages
5
Reaction score
0
Location
California
Vehicles
2021 F-150 Lariat Powerboost, 2016 Fusion
I would take a look in the service manual. That would tell you if any software configuration is required. It would also give you procedures for dealing with the high voltage.
[/QUOTE]

Do you know where I can find that reference? Thanks for your help
 

Captain Dirty Beard

Well-known member
Joined
Jun 20, 2024
Threads
10
Messages
209
Reaction score
172
Location
Colorado
Vehicles
2023 Lariat Powerboost, 2022 MACH1 HP

powerboatr

Well-known member
First Name
Robert
Joined
May 9, 2022
Threads
166
Messages
4,010
Reaction score
4,850
Location
North East Texas, Piney Woods
Vehicles
2024 F250 King Ranch Chrome
Occupation
Retired Navy Senior Chief
shiiiiit
i would write ford a letter and see if there is a wiggle, with a 2021 with that many worry free miles
if you know what i mean
i have had success in the past with just a touch our of warranty items on both a gm and a ford
it might take a bit of sugar and patience
did they say what caused the battery pack to fail?
good luck
 

Sponsored


OP
OP

dbennett415

Member
First Name
Dustin
Joined
Oct 31, 2024
Threads
1
Messages
5
Reaction score
0
Location
California
Vehicles
2021 F-150 Lariat Powerboost, 2016 Fusion
shiiiiit
i would write ford a letter and see if there is a wiggle, with a 2021 with that many worry free miles
if you know what i mean
i have had success in the past with just a touch our of warranty items on both a gm and a ford
it might take a bit of sugar and patience
did they say what caused the battery pack to fail?
good luck
[/QUOTE]


I’ve tried calling the Ford warranty people, they ended up transferring me to another department. Now I am waiting for the dealership maintenance manager to call me back, but so far, the only answer I have is I’m shit out of luck.
 

DadBald

Well-known member
First Name
James
Joined
Sep 12, 2021
Threads
23
Messages
366
Reaction score
201
Location
Michigan
Vehicles
2021 F-150 XLT Powerboost
Occupation
Energy Engineer
Dang, sorry to hear that. My 2021 hybrid battery was replaced this January at about 40,000 miles. Dealer quoted ~$8k but it was covered by warranty. The list of computer codes was comically long.

I wonder why they need to replace the motor though, that sounds odd to me.
 

jhelrey

Well-known member
Joined
Sep 18, 2023
Threads
29
Messages
596
Reaction score
437
Location
MN
Vehicles
2021 F150 CC Platinum FX4 5.0 4X4 3.73 LB
Do you have a Ford Premium Care ESP?
 

HammaMan

Well-known member
Joined
Sep 7, 2022
Threads
102
Messages
7,240
Reaction score
8,166
Location
SE US
Vehicles
2022 307a PB, Mach E GTPE

m_bt54

Well-known member
First Name
Bryan
Joined
Nov 16, 2022
Threads
13
Messages
960
Reaction score
984
Location
Massachusetts
Vehicles
2021 F150 Lariat Powerboost Hybrid
Occupation
IT Director
i would ask your dealer to reach out to Ford for financial assistance. They offered to cover 70% of my recent out of warranty repair. (long story that i have been outlining in another thread but ended up getting it all covered. I’ll link it below because your issues don’t sound too different from what I have been dealing with since May). The dealership should know how to start the request process.



https://www.f150gen14.com/forum/threads/wont-start-stop-safely-now-u0412-p0563-p0adf.24531/

In short, I have had my hybrid battery, BECM, both 12v batteries, a fuse box all replaced and still had issues. The repair happening now is replacing a wiring harness that required them to remove a good portion of my front end.
Sponsored

 
Last edited:
 





Top