Sponsored

12V battery failure while driving 45mph: Fix post #58

RLXXI

Well-known member
Joined
Jun 10, 2021
Threads
31
Messages
1,504
Reaction score
1,302
Location
3rd rock
Vehicles
2025 F 150 Flash, 2013 F 150 XLT, 2014 Escape, 2011 Suzuki DR 650SE
Occupation
Automotive Technician
Update for everyone:

Truck is back with a new battery module. It charged just fine yesterday. Drove fine - no issues. Last time, it died on the road the morning after I picked it up. Highly recommend St Charles Hawk Ford - Brandon (the tech) was excellent and has a Lightning himself.

DO NOT go to Hopkins Ford in Elgin, IL. I got a follow up email from them asking me to come in for a $400 (yes, 400) diagnostic for my PaaK issue that St Charles just took care of. Keep in mind they quoted me $595 for the 12v battery alone, then sent me a text estimate for $996 for the battery, diag, and labor. Also had physical damage to my truck from them that I'm still working through getting taken care of.

I wish I could see my 12v status b/c I am paranoid about it now. I'm going to buy one of those monitors to plug into my cig lighter as some folks have mentioned - but it is crazy to me that I cannot see it in my app as any dealer can see it and Ford engineers can see it. @Ford Motor Company , this would be a huge upgrade to our app. Thanks for the help, Brian!
You can see it with Home Assistant also so it's not like the info isn't there to be used by the app.

Ford F-150 Lightning 12V battery failure while driving 45mph: Fix  post #58 Screenshot_20260115_110405_Home Assistant
Sponsored

 

Lytning

Well-known member
Joined
Jan 8, 2022
Threads
12
Messages
669
Reaction score
1,104
Location
Georgia
Vehicles
Prev: 2000 SVT Lightning; Now: 2022 BEV Lightning
Occupation
Engineer
You can see it with Home Assistant also so it's not like the info isn't there to be used by the app.
The British use the term “gobsmacked”, which seems to fit for this situation. I am gobsmacked that in almost 4 years @Ford Motor Company has refused to provide us with the much requested 12 volt battery SOC. Ford can see it in Dearborn, but we can’t see it in our trucks. We must be on double-secret probation (as in Animal House) or something.
 
Last edited by a moderator:

RLXXI

Well-known member
Joined
Jun 10, 2021
Threads
31
Messages
1,504
Reaction score
1,302
Location
3rd rock
Vehicles
2025 F 150 Flash, 2013 F 150 XLT, 2014 Escape, 2011 Suzuki DR 650SE
Occupation
Automotive Technician
Last edited:

El Duderino

Well-known member
Joined
Mar 25, 2025
Threads
2
Messages
159
Reaction score
135
Vehicles
2025 Flash
Happy to hear you are back and going again. Good to hear you found a good dealer too.
 

Sponsored
OP
OP
NotPatel

NotPatel

Member
First Name
Raj
Joined
Jan 6, 2026
Threads
1
Messages
19
Reaction score
43
Location
Chicago
Vehicles
23 Ford Lightning Lariat ER
I have an appointment on Monday - but if there is a quick way someone could help me out, that would be great. I flashed my high beams 10x, and reset my system using the volume/track button. Neither worked.

My passive entry no longer works with my phone. It recognizes my phone as a key when I get in, but my passive entry is not working. I cannot lock/unlock the doors. I am happy to go in Monday, but would rather fix this if it just has something to do with my HV module replacement. Thanks!
 

PrimeRisk

Well-known member
First Name
Mark
Joined
Aug 4, 2024
Threads
9
Messages
350
Reaction score
370
Location
Denver-Metro
Vehicles
2024 F-150 L Lariat, 2023 Tesla MY, 2021 Tesla MYP
Occupation
Technonerd
Home Assistant is the app.
How do you get "Home Assistant" app to read information from your Ford account? I'm on Android and the only app that matches this name has the following logo and seems to be part of a larger system as when firing it up it expects to find a Home Assistant server to attach to.

Ford F-150 Lightning 12V battery failure while driving 45mph: Fix  post #58 1769032305377-15


This would be a great help to a lot of us if you can help us set it up.
 

RLXXI

Well-known member
Joined
Jun 10, 2021
Threads
31
Messages
1,504
Reaction score
1,302
Location
3rd rock
Vehicles
2025 F 150 Flash, 2013 F 150 XLT, 2014 Escape, 2011 Suzuki DR 650SE
Occupation
Automotive Technician
How do you get "Home Assistant" app to read information from your Ford account? I'm on Android and the only app that matches this name has the following logo and seems to be part of a larger system as when firing it up it expects to find a Home Assistant server to attach to.

1769032305377-15.webp


This would be a great help to a lot of us if you can help us set it up.
You create a custom integration within HA.
 

RLXXI

Well-known member
Joined
Jun 10, 2021
Threads
31
Messages
1,504
Reaction score
1,302
Location
3rd rock
Vehicles
2025 F 150 Flash, 2013 F 150 XLT, 2014 Escape, 2011 Suzuki DR 650SE
Occupation
Automotive Technician
It’s a pretty involved process.
The learning curve is a bit steep, I found it fairly easy following the directions I linked above but then my electrical/electronics/computer training goes way back. Hadn't seen the video.
 
Last edited:

El Duderino

Well-known member
Joined
Mar 25, 2025
Threads
2
Messages
159
Reaction score
135
Vehicles
2025 Flash
The learning curve is subjective but not too bad. I've built entire websites including java script using nothing but html, :oops: lol yeah I'm old.
You have Solar at home right? Do you use Solar Assistant software to track at all? It also integrates with Home Assistant. There is a very deep rabbit hole to go down now 😊
Sponsored

 
 







Top