Adding ACC/LKA to 2025 Pro - Forscan, TRON encryption questions

[B177y]

I added the ACC/LKA to my 2024 Pro using this thread and this thread.

New forum member @25LPro reached out to me about working through the possibility of adding it to his 2025 Pro ER (we're both in the PNW). He downloaded Forscan and got an adapter to verify everything works on that end. We're going to try some simple mods to make sure Forscan is able to write successfully on his 2025 before even thinking about ordering parts to complete the ACC/LKA addition.

Questions for those in the know, I'm thinking specifically @Jesse-Infotainment , @bmwhitetx , and any others super familiar with Forscan and modding:

-Does the 2025 have TRON encryption? Forscan loads and shows all of the modules like normal, so I assume there is no encryption? We have't tried to make any changes yet.

-If it does have TRON, would Forscan still successfully work and write changes to the modules, or would Forscan be blocked by the encryption?

-If the truck has TRON encryption and everything above works, would we be able to add the new CCM or would that be where the TRON would start to give us trouble?

All of the questions about the TRON encryption have come from the Comma.ai posts here and on Discord where 2025 Mach-e's can't use the Comma because the TRON blocks it. To our knowledge, there has not been any attempt to add the ACC/LKA to a 2025 Lightning and there is no attempt to add a Comma to a 2025 Lightning yet that would help verify if encryption has been added to the Lightnings. There was initial concerns that the 2024's were encrypted but the ACC/LKA mod and success with adding a Comma device proved that wrong.

The parts for the ACC/LKA mod are now close to $600 and since most electrical parts aren't able to be returned once opened, it's an expensive trial. We're trying to gather as much info as possible before proceeding.

Thanks in advance for any info or guidance.

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[rugedraw]

Yes, the 2025 uses TRON and no FORScan cannot run TRON authorization. That can only be done with FDRS. However, I don't think FDRS would do it since the hardware in your truck is not supposed to be there. I don't know if FDRS would recognize the things you added as if they were native to your truck.

 

[B177y]

Yes, the 2025 uses TRON and no FORScan cannot run TRON authorization. That can only be done with FDRS. However, I don't think FDRS would do it since the hardware in your truck is not supposed to be there. I don't know if FDRS would recognize the things you added as if they were native to your truck.

Would the TRON block any changes that we tried to make with Forscan? We haven't tried make changes yet but he sent me a picture of the Forscan screen and shows the list of modules like normal. We are planning a meetup to tinker with his truck and decide if it's possible to move ahead with the ACC project.

 

[rugedraw]

Would the TRON block any changes that we tried to make with Forscan? We haven't tried make changes yet but he sent me a picture of the Forscan screen and shows the list of modules like normal. We are planning a meetup to tinker with his truck and decide if it's possible to move ahead with the ACC project.

I am not exactly sure how TRON will affect it, but TRON not being authorized will not prevent FORScan from working AFAIK. We'll have to wait for Jesse to chime in on the technical part. From brief convos I have had with him about similar subject matter, firmware that requires TRON cannot be used on non-TRON vehicles.

 

[Jesse-Infotainment]

the Mach E 25 does have tron.> I do not believe the 25 Lightning has Tron.

Tron wont prevent forscan changes. Tron is strictly for canbus.

I have installed Tron modules in non Tron vehicles. I did a TRON IPMA in my 21 F150 for testing.. And it worked. That being said I didnt do a full test. So ther ecould be issues I didnt discover with the limited testing I did.

 

[Jesse-Infotainment]

Would the TRON block any changes that we tried to make with Forscan? We haven't tried make changes yet but he sent me a picture of the Forscan screen and shows the list of modules like normal. We are planning a meetup to tinker with his truck and decide if it's possible to move ahead with the ACC project.

You can add ACC to tron vehicles. I was the first to do it with a 23 Super duty which was the first vehicle to Have TRON.

The CCM is not apart of the encryption so isnt a problem to add. The only time TRON is an issue is when changing out a module that is apart of the TRON encryption. PCM< ABS< DDM, PDM, IPMA, TCU, GATEWAY

 

[B177y]

You can add ACC to tron vehicles. I was the first to do it with a 23 Super duty which was the first vehicle to Have TRON.

The CCM is not apart of the encryption so isnt a problem to add. The only time TRON is an issue is when changing out a module that is apart of the TRON encryption. PCM< ABS< DDM, PDM, IPMA, TCU, GATEWAY

Excellent news, thank you!

 

[rusty_shackleford]

I added the ACC/LKA to my 2024 Pro using this thread and this thread.

New forum member @25LPro reached out to me about working through the possibility of adding it to his 2025 Pro ER (we're both in the PNW). He downloaded Forscan and got an adapter to verify everything works on that end. We're going to try some simple mods to make sure Forscan is able to write successfully on his 2025 before even thinking about ordering parts to complete the ACC/LKA addition.

Questions for those in the know, I'm thinking specifically @Jesse-Infotainment , @bmwhitetx , and any others super familiar with Forscan and modding:

-Does the 2025 have TRON encryption? Forscan loads and shows all of the modules like normal, so I assume there is no encryption? We have't tried to make any changes yet.

-If it does have TRON, would Forscan still successfully work and write changes to the modules, or would Forscan be blocked by the encryption?

-If the truck has TRON encryption and everything above works, would we be able to add the new CCM or would that be where the TRON would start to give us trouble?

All of the questions about the TRON encryption have come from the Comma.ai posts here and on Discord where 2025 Mach-e's can't use the Comma because the TRON blocks it. To our knowledge, there has not been any attempt to add the ACC/LKA to a 2025 Lightning and there is no attempt to add a Comma to a 2025 Lightning yet that would help verify if encryption has been added to the Lightnings. There was initial concerns that the 2024's were encrypted but the ACC/LKA mod and success with adding a Comma device proved that wrong.

The parts for the ACC/LKA mod are now close to $600 and since most electrical parts aren't able to be returned once opened, it's an expensive trial. We're trying to gather as much info as possible before proceeding.

Thanks in advance for any info or guidance.

At the maverick forum, we are trying to do the same thing. It seems the 2025s have the same TRON updates along with SYNC 4. I've ordered a bunch of parts and will be connecting a CCM radar to my XL to see if it communicates this weekend, so watch for updates and if you want to help with programming I would appreciate it!

https://www.mavericktruckclub.com/forum/threads/retrofit-adaptive-cruise-2025-xlt.61515/

 

[rusty_shackleford]

You can add ACC to tron vehicles. I was the first to do it with a 23 Super duty which was the first vehicle to Have TRON.

The CCM is not apart of the encryption so isnt a problem to add. The only time TRON is an issue is when changing out a module that is apart of the TRON encryption. PCM< ABS< DDM, PDM, IPMA, TCU, GATEWAY

Do you have a link where this might have been discussed? Another 2025 maverick owner and I have connected a CCM to our IPMA and we cant get the system to recognize the CCM is present, just DTC for lost comms to CCM in the IPMA. The 2025 Mavs changed configuration to be more similar to the F series IPMA as opposed to earlier Mavs with the IPMA integrated with the camera above the rear view mirror.

 

[Jesse-Infotainment]

Do you have a link where this might have been discussed? Another 2025 maverick owner and I have connected a CCM to our IPMA and we cant get the system to recognize the CCM is present, just DTC for lost comms to CCM in the IPMA. The 2025 Mavs changed configuration to be more similar to the F series IPMA as opposed to earlier Mavs with the IPMA integrated with the camera above the rear view mirror.

Ill look at a 25 Maverick vin.

If its not seeing the CCM and you dont have a 2101 DTC then you need to check your wiring.

The IPMA may have TRON but the Tron doesnt affect the CCM. The CCM canbus network is built into the IPMA. Its a self contained network so to say. There may be a possibility the CCM cant be added to the IPMA you have but its not likely if you dont have a 2101 DTC>

Tron only affects replacing modules contained within the TRON branch.

 

[rusty_shackleford]

Ill look at a 25 Maverick vin.

If its not seeing the CCM and you dont have a 2101 DTC then you need to check your wiring.

The IPMA may have TRON but the Tron doesnt affect the CCM. The CCM canbus network is built into the IPMA. Its a self contained network so to say. There may be a possibility the CCM cant be added to the IPMA you have but its not likely if you dont have a 2101 DTC>

Tron only affects replacing modules contained within the TRON branch.

U2101 is present along side U0104, just with changes on 706-02-02 x04x to x05x and 706-16-01 0xxx to 1xxx on the IPMA for radar present and radar fusion.
Does this mean my IPMA is incompatible? And TRON will make it difficult or impossible to upgrade?

 

[Jesse-Infotainment]

U2101 is present along side U0104, just with changes on 706-02-02 x04x to x05x and 706-16-01 0xxx to 1xxx on the IPMA for radar present and radar fusion.
Does this mean my IPMA is incompatible? And TRON will make it difficult or impossible to upgrade?

If you have a 2101 that can cause the issue as well. 2101 causes basically the IPMA to shut down all the Safety systems.

The first change you would need to make in order to make the CCM visible is

706-02-02
XX1X XXXX XXxx

Where the 1 is youll need to add a 1 to whatever you have there.

That SHOULD allow you to see the CCM without having any other issues..

But if you are sure the CCM wiring is all good and are not seeing it then you may have a situation where ford has made the IPMA with 360 cams the only IPMA that can have it.

I havent messed with the Maverick yet. It is the same general config as the 21 up F150 but Ford has been doing things differently the 23 F250 had 3 different IPMA part numbers for 360 cams. Each for a different situation

 

[rusty_shackleford]

If you have a 2101 that can cause the issue as well. 2101 causes basically the IPMA to shut down all the Safety systems.

The first change you would need to make in order to make the CCM visible is

706-02-02
XX1X XXXX XXxx

Where the 1 is youll need to add a 1 to whatever you have there.

That SHOULD allow you to see the CCM without having any other issues..

But if you are sure the CCM wiring is all good and are not seeing it then you may have a situation where ford has made the IPMA with 360 cams the only IPMA that can have it.

I havent messed with the Maverick yet. It is the same general config as the 21 up F150 but Ford has been doing things differently the 23 F250 had 3 different IPMA part numbers for 360 cams. Each for a different situation

I appreciate you taking the time to help.

With everything vanilla and the one change on IPMA 706-02-02 from x04x-xxxx-xxxx to x05x-xxxx-xxxx I get U2101. I double checked the canbus wires and swapped them just to see, no changes. Seems you may be right about the IPMA revision being the roadblock, I was worried I bought a bad CCM.

I wonder if the pins for the CCM on the IPMA even go anywhere? I’d think wiring them backwards would throw up another DTC.

Do you know if anyone has successfully installed a different version of a module and been able to get it to play nice and authenticated with tron?

 

[Jesse-Infotainment]

I appreciate you taking the time to help.

With everything vanilla and the one change on IPMA 706-02-02 from x04x-xxxx-xxxx to x05x-xxxx-xxxx I get U2101. I double checked the canbus wires and swapped them just to see, no changes. Seems you may be right about the IPMA revision being the roadblock, I was worried I bought a bad CCM.

I wonder if the pins for the CCM on the IPMA even go anywhere? I’d think wiring them backwards would throw up another DTC.

Do you know if anyone has successfully installed a different version of a module and been able to get it to play nice and authenticated with tron?

Yes, you can install a new module and have it authenticated. Tron doesnt do a part number check as of when I have done them. Ive done it a few times for myself and when I did push to start and 360 camera upgrades for F150 and My super duty. Ive done it many time actually.

It seem like they locked out the config for ACC from that IPMA.

Ford has been getting to be this way and it started in the 23 Super duty.

You do have to make sure the wiring is at the IPMA because if you didnt run it all the way I doubt the truck is prewired. Very few are.

If you set the config 100% correct and get a 2101 you wont be able to run it. Keep in mind a 2101 can be due to the BCM or ABS not being correct as well. 2101 being in the IPMA doesnt mean the config issue is in the IPMA alone.

 

[rusty_shackleford]

Yes, you can install a new module and have it authenticated. Tron doesnt do a part number check as of when I have done them. Ive done it a few times for myself and when I did push to start and 360 camera upgrades for F150 and My super duty. Ive done it many time actually.

It seem like they locked out the config for ACC from that IPMA.

Ford has been getting to be this way and it started in the 23 Super duty.

You do have to make sure the wiring is at the IPMA because if you didnt run it all the way I doubt the truck is prewired. Very few are.

If you set the config 100% correct and get a 2101 you wont be able to run it. Keep in mind a 2101 can be due to the BCM or ABS not being correct as well. 2101 being in the IPMA doesnt mean the config issue is in the IPMA alone.

Sounds expensive. I know the truck isn’t pre wired, I bought terminal kits and have the CCM pigtail wirenutted, just enough length to put the seats back and have the CCM hanging over the back rest for testing.

Any way to know if the BCM or ABS will be compatible with ACC before I change the IPMA? Do you think I need a maverick specific IPMA? An f150 one might be more available and affordable.

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