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2025 Ford Lighting Flash (Non-Max Towing) - Install Factory Brake Controller

ktdevil5

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I know this has been discussed before, I just want to make sure I am prepared for when I make the attempt to install. I took a look at my current brake controller. It had the number: ML3T-19J295-GC.

From everything I read, ML3T-19J295-GC can not be enabled to use as a brake controller if I installed the factory switch.

From my research, I have found Lighting Flash owners having sucess with module: MU5T-19J295-HJ. I have further found this is the Eng number for part number: ML3Z-19H332-U.

I ordered ML3Z-19H332-U and ML3Z-14529-AC for the install. I have used Forscan to activate other features and have an "OK" amount of knowledge.

With this said. Here is a guide I put together once they come in. Can anyone verify these are the correct steps before I attempt this?

THANKS IN ADVANCE!!!!!!!!!!

My Vehicle: 2025 Ford F-150 Flash
VIN: 1FTVW3LU7SWG21370

GUIDE:

Phase 1: Physical Prep

  1. Disconnect the 12V battery. Wait 10 minutes to allow the truck's modules to power down completely.
  2. Swap the Module: Unplug the two harnesses from your -GC module and plug them into your new ML3Z-19H322-U unit under the dash.
  3. Install the Switch: Pop the ML3Z-14529-AC slider into the dash.
  4. Reconnect the battery.
Phase 2: FORScan Procedure

Open FORScan and connect to your truck. When it asks if you want to use a "Saved Profile," select NO. This ensures it reads the new hardware correctly.

1. Update the TRM (Trailer Module)

  • Module: TRM Configuration (As-Built)
  • Address: 791-01-02
  • Change: Locate the 5th digit. Change it to a 5.
  • Final look: xxxx 5xxx xx
  • Click: "Write," then follow the prompt to cycle the ignition.

2. Update the IPC (Instrument Cluster)

  • Module: IPC Configuration (As-Built)
  • Address: 720-07-01
  • Change: Locate the 10th digit. Change it to an A.
  • Final look: xxxx xxxx xAxx
  • Address: 720-05-02
  • Change: Locate the 3rd digit. Change it to a 4.
  • Final look: xx4x xxxx xx
  • Click: "Write All." Your dash will reboot and might beep.

3. Update the APIM (Center Screen)


  • Module: APIM Configuration (As-Built)
  • Address: 7D0-09-03
  • Change: Locate the 12th digit. Change it to a 4.
  • Final look: xxxx xxxx xxx4
  • Click: "Write." This adds the trailer brake menus to your big screen.
4. Handling the "Hitch Assist" & IPMA

Because you have the Pro Trailer Hitch Assist, your camera module (IPMA) is very sensitive.

  1. Go to the Service Functions (Wrench Icon) in FORScan.
  2. Run "LIN New Module Initialization." This forces the cameras and the new Brake Module to introduce themselves to each other.
  3. Run "IPMA Module Reset." This clears any "blindness" the cameras might have after the hardware swap.
--------------------------------------------------------------------------------------------------------

Phase 3: Final Troubleshooting

Final Troubleshooting


If you finish and see "Trailer Brake Module Fault":

  • Go to the Warning Triangle in FORScan and "Clear All DTCs." It is normal for the truck to throw "U-codes" (Communication Loss) during programming.
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ktdevil5

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Well.. I tried everything. I even had Ford here and they programed to module with my VIN during the Recall update. I just ordered Infotainments kit. I hope that gets me there... Unless anyone else has any ideas....
 

davel8257

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I know this has been discussed before, I just want to make sure I am prepared for when I make the attempt to install. I took a look at my current brake controller. It had the number: ML3T-19J295-GC.

From everything I read, ML3T-19J295-GC can not be enabled to use as a brake controller if I installed the factory switch.

From my research, I have found Lighting Flash owners having sucess with module: MU5T-19J295-HJ. I have further found this is the Eng number for part number: ML3Z-19H332-U.

I ordered ML3Z-19H332-U and ML3Z-14529-AC for the install. I have used Forscan to activate other features and have an "OK" amount of knowledge.

With this said. Here is a guide I put together once they come in. Can anyone verify these are the correct steps before I attempt this?

THANKS IN ADVANCE!!!!!!!!!!

My Vehicle: 2025 Ford F-150 Flash
VIN: 1FTVW3LU7SWG21370

GUIDE:

Phase 1: Physical Prep

  1. Disconnect the 12V battery. Wait 10 minutes to allow the truck's modules to power down completely.
  2. Swap the Module: Unplug the two harnesses from your -GC module and plug them into your new ML3Z-19H322-U unit under the dash.
  3. Install the Switch: Pop the ML3Z-14529-AC slider into the dash.
  4. Reconnect the battery.
Phase 2: FORScan Procedure

Open FORScan and connect to your truck. When it asks if you want to use a "Saved Profile," select NO. This ensures it reads the new hardware correctly.

1. Update the TRM (Trailer Module)

  • Module: TRM Configuration (As-Built)
  • Address: 791-01-02
  • Change: Locate the 5th digit. Change it to a 5.
  • Final look: xxxx 5xxx xx
  • Click: "Write," then follow the prompt to cycle the ignition.

2. Update the IPC (Instrument Cluster)

  • Module: IPC Configuration (As-Built)
  • Address: 720-07-01
  • Change: Locate the 10th digit. Change it to an A.
  • Final look: xxxx xxxx xAxx
  • Address: 720-05-02
  • Change: Locate the 3rd digit. Change it to a 4.
  • Final look: xx4x xxxx xx
  • Click: "Write All." Your dash will reboot and might beep.

3. Update the APIM (Center Screen)


  • Module: APIM Configuration (As-Built)
  • Address: 7D0-09-03
  • Change: Locate the 12th digit. Change it to a 4.
  • Final look: xxxx xxxx xxx4
  • Click: "Write." This adds the trailer brake menus to your big screen.
4. Handling the "Hitch Assist" & IPMA

Because you have the Pro Trailer Hitch Assist, your camera module (IPMA) is very sensitive.

  1. Go to the Service Functions (Wrench Icon) in FORScan.
  2. Run "LIN New Module Initialization." This forces the cameras and the new Brake Module to introduce themselves to each other.
  3. Run "IPMA Module Reset." This clears any "blindness" the cameras might have after the hardware swap.
--------------------------------------------------------------------------------------------------------

Phase 3: Final Troubleshooting

Final Troubleshooting


If you finish and see "Trailer Brake Module Fault":

  • Go to the Warning Triangle in FORScan and "Clear All DTCs." It is normal for the truck to throw "U-codes" (Communication Loss) during programming.
Has anyone followed this procedure successfully?

I bought my 2024 Flash used and the physical prep was done and everything was working per the previous owner (no alerts when I got the truck). A dealer near me (not the original), reflashed the firmward and I now have trailer fault codes. He wants $700 to remove the module(s) and reflash the truck back to factory-build configuration (aka no brake controller).
 
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ktdevil5

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Has anyone followed this procedure successfully?

I bought my 2024 Flash used and the physical prep was done and everything was working per the previous owner (no alerts when I got the truck). A dealer near me (not the original), reflashed the firmward and I now have trailer fault codes. He wants $700 to remove the module(s) and reflash the truck back to factory-build configuration (aka no brake controller).
i wasn’t successful with this. I had to ultimately go with infotainment.com. Here was what I ordered and it works amazing.
This shipment included the following items:

Item #Description
Qty
F-TBC-212021-2023 F150 Ford Trailer Brake Controller Programmer
1​
F-MODTBC-21L32021-2023 Ford F-150 Integrated Electronic Trailer Brake Controller Kit
1​


Thank you for your business. If there’s anything we can do to improve your experience, please let us know!

Infotainment.com
Phone:
407-977-5100
Email: [email protected]
Website: www.infotainment.com
Ford F-150 Lightning 2025 Ford Lighting Flash (Non-Max Towing) - Install Factory Brake Controller {filename}
 

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davel8257

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First Name
David
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Location
Odon, Indiana
Vehicles
2024 F150 Lightning Flash, extended range battery
Occupation
retired engineer
i wasn’t successful with this. I had to ultimately go with infotainment.com. Here was what I ordered and it works amazing.
This shipment included the following items:

Item #Description
Qty
F-TBC-212021-2023 F150 Ford Trailer Brake Controller Programmer
1​
F-MODTBC-21L32021-2023 Ford F-150 Integrated Electronic Trailer Brake Controller Kit
1​


Thank you for your business. If there’s anything we can do to improve your experience, please let us know!

Infotainment.com
Phone:
407-977-5100
Email: [email protected]
Website: www.infotainment.com
Ford F-150 Lightning 2025 Ford Lighting Flash (Non-Max Towing) - Install Factory Brake Controller {filename}
 

davel8257

Active member
First Name
David
Joined
May 9, 2026
Threads
2
Messages
28
Reaction score
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Location
Odon, Indiana
Vehicles
2024 F150 Lightning Flash, extended range battery
Occupation
retired engineer
I've looked into this -- since I have the gain control in the dash, can I assume I have the ACM module and all I need is the programmer? I think this was all working until the dealer attempted the TRM module recall process (which I authorized him to do, since I was unaware that the controller was not part of the 'as-built' factory configuration. (Neither was he at first, it was ont he 2nd visit that this all came to light. )
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