DIY: Installing ACC (Adaptive Cruise Control) and LKA (Lane Keep Alert) to 2022 F-150 Lightning XLT

[rio]

Hi everyone,
I have a 2024 F-150 Lightning XLT and I'm in trouble with my SCCM after attempting the ACC retrofit mod. I used Claude AI to help me summarize this thread, build a personalized install guide from the scattered posts, and also to write this post in a clear and organized way — so hopefully it's easy to follow!

During the ACC install, I changed 724-03-01 from 0201 0000 to 3201 0000 to configure the new SW-8937 cruise control switch (left steering wheel button). The value 32 was calculated with the help of Claude AI based on an offset from my starting value — this turned out to be a mistake.

Current symptoms:
Steering wheel buttons not working
High beams not working properly
Wipers only work at maximum speed — all other speeds unresponsive
SCCM is unresponsive most of the time — when it does communicate, it shows the following DTCs:
B137F - Steering Wheel Left Switch Pack - Incorrect Component Installed
When it communicate SCCM Easy Mode shows "50 - Incorrect value or not configured" for Steering Wheel Switch Left
HCM shows U0429 - Invalid Data From Steering Column Control Module
Turn signals behave very strangely: 3-4 second delay before activating, then 2 quick flashes, short pause, then 4 quick flashes — and this pattern repeats instead of normal rhythmic blinking
What I've tried:
FORScan Configuration → SCCM is offline most of the time. When it does respond, it usually only shows 2 blocks (724-01-01 and 724-02-01). Occasionally all 5 blocks appear, but the module becomes unresponsive again shortly after — never long enough to successfully write anything.
FORScan Load Factory AB → also fails
FDRS with Mongoose-Plus J2534 Ford → PMI attempted but failed with "NRC 7F - serviceNotSupportedInActiveSession"
FDRS with TOPDON RLink J2534 (CAN FD/DoIP) →waiting for the deliveryof the cable this afternoon results pending
Questions:
Any chance the PMI will pass with CAN FD/DoIP support?

Vehicle: 2024 F-150 Lightning XLT, VIN: 1FTVW3LK1RWG01883
FORScan v2.3.70, Mongoose-Plus J2534 Ford, TOPDON RLink J2534
@ZSC100 @rugedraw @hturnerfamily any help appreciated!
Thanks

Did you create a backup of of your modules before making changes? Your best bet is to reload those and start over. The first post on this thread lists most of the FORScan changes. I would start there.

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[daniel2130]

Did you create a backup of of your modules before making changes? Your best bet is to reload those and start over. The first post on this thread lists most of the FORScan changes. I would start there.

Yeah i did a backup but the SCCM module is always giving error when trying to write or read from it i recovered the others modules without any issue but its just the SCCM now giving issue

 

[rugedraw]

@daniel2130 If the Mongoose failed the PMI, then the TopDon won't help. Codes being reported by your truck cite incompatible config and an incorrect component installed. Tbh, I am not sure how to fix this. What color is the SCCM in FDRS when it does comminucate? Orange or purple?

 

[daniel2130]

@daniel2130 If the Mongoose failed the PMI, then the TopDon won't help. Codes being reported by your truck cite incompatible config and an incorrect component installed. Tbh, I am not sure how to fix this. What color is the SCCM in FDRS when it does comminucate? Orange or purple?

Most of the time he is gray and become orange and display the dtc codes. Do you think it would be possible to me to buy a new sccm module and then reprogram it with fdrs because actually up here the delay for lightning jobs are awful they gave me an appointment for the 6th of may even if my 12v battery is swollen and give high drainage alarm

 

[rugedraw]

Most of the time he is gray and become orange and display the dtc codes. Do you think it would be possible to me to buy a new sccm module and then reprogram it with fdrs because actually up here the delay for lightning jobs are awful they gave me an appointment for the 6th of may even if my 12v battery is swollen and give high drainage alarm

Ok, so if it's not purple, at least the SCCM is not bricked. Strange that it keeps losing comms. You sure you wired everything correctly and there are no loose connections? The SCCM you bought now..... you sure it's the correct part number for this project? I've never done what you're doing, so not sure what the job entails.

 

[daniel2130]

Yeah i did a backup but the SCCM module is always giving error when trying to write or read from it i recovered the others modules without any issue but its just the SCCM now giving issue

Plus when i try to do a pmi

Ok, so if it's not purple, at least the SCCM is not bricked. Strange that it keeps losing comms. You sure you wired everything correctly and there are no loose connections? The SCCM you bought now..... you sure it's the correct part number for this project? I've never done what you're doing, so not sure what the job entails.

Its still the original SCCM that came with the vehicle. When i do pull on the flasher lever it make kinda the feeling that two sources is broadcasting signals because of the fact the intermittent stuff like wipers (doesnt work unless its on max so fully broadcasting an On signal) and flasher seem to flash at the right interval but are cutted by another signal like collision so it would make sense to me that the sccm shutdown to stop the collision on the bus. Could it be that i had previously enabled the anti glare headlight and the sccm is receiving the headlight signal from the IPMA and is colliding
I have joined a video of the flasher erratic behavour

 

[ZSC100]

Plus when i try to do a pmi

Its still the original SCCM that came with the vehicle. When i do pull on the flasher lever it make kinda the feeling that two sources is broadcasting signals because of the fact the intermittent stuff like wipers (doesnt work unless its on max so fully broadcasting an On signal) and flasher seem to flash at the right interval but are cutted by another signal like collision so it would make sense to me that the sccm shutdown to stop the collision on the bus. Could it be that i had previously enabled the anti glare headlight and the sccm is receiving the headlight signal from the IPMA and is colliding
I have joined a video of the flasher erratic behavour

You are clearly having a CAN communications issue with your SCCM. This sucks, sorry you are dealing with this, but you likely have a physical problem with your harness or the connectors with the CAN pins for the SCCM. Nothint to it but to physically dissassemble and inspect.

 

[daniel2130]

You are clearly having a CAN communications issue with your SCCM. This sucks, sorry you are dealing with this, but you likely have a physical problem with your harness or the connectors with the CAN pins for the SCCM. Nothint to it but to physically dissassemble and inspect.

I have some doubt about the can pins and the wiring because before doing the programming i drove the truck two time between the radar installation and wiring and the steering button swap and the begening of the programming
I had a check engine light from the ipma but nothing else on the road i will try to check if in the ipma connector if there is some can-bus maybe when the pins was unlocked one could have pulled abit back that is the only wiring issue i could see

 

[rugedraw]

I'm not sure I can be of much help here, but I will following along to see what is causing the issue for the sake of science.

 

[daniel2130]

Ok, so if it's not purple, at least the SCCM is not bricked. Strange that it keeps losing comms. You sure you wired everything correctly and there are no loose connections? The SCCM you bought now..... you sure it's the correct part number for this project? I've never done what you're doing, so not sure what the job entails.

I bought the sccm brand new from a ford dealer they found the part from the VIN number I just hope that they are not limited to dealership reprograming because i kinda found that in 2024 they began to vin lock these parts for the reason of reducing parts stealing. Plus i have the feeling the sccm never go to sleep and keep the other stuff alive because since this bug the car is telling me everynight that i have a 12v battery leak. I should receive the new part around the 1-3 april

 

[dr1983]

Hi everyone,
I have a 2024 F-150 Lightning XLT and I'm in trouble with my SCCM after attempting the ACC retrofit mod. I used Claude AI to help me summarize this thread, build a personalized install guide from the scattered posts, and also to write this post in a clear and organized way — so hopefully it's easy to follow!

During the ACC install, I changed 724-03-01 from 0201 0000 to 3201 0000 to configure the new SW-8937 cruise control switch (left steering wheel button). The value 32 was calculated with the help of Claude AI based on an offset from my starting value — this turned out to be a mistake.

Current symptoms:
Steering wheel buttons not working
High beams not working properly
Wipers only work at maximum speed — all other speeds unresponsive
SCCM is unresponsive most of the time — when it does communicate, it shows the following DTCs:
B137F - Steering Wheel Left Switch Pack - Incorrect Component Installed
When it communicate SCCM Easy Mode shows "50 - Incorrect value or not configured" for Steering Wheel Switch Left
HCM shows U0429 - Invalid Data From Steering Column Control Module
Turn signals behave very strangely: 3-4 second delay before activating, then 2 quick flashes, short pause, then 4 quick flashes — and this pattern repeats instead of normal rhythmic blinking
What I've tried:
FORScan Configuration → SCCM is offline most of the time. When it does respond, it usually only shows 2 blocks (724-01-01 and 724-02-01). Occasionally all 5 blocks appear, but the module becomes unresponsive again shortly after — never long enough to successfully write anything.
FORScan Load Factory AB → also fails
FDRS with Mongoose-Plus J2534 Ford → PMI attempted but failed with "NRC 7F - serviceNotSupportedInActiveSession"
FDRS with TOPDON RLink J2534 (CAN FD/DoIP) →waiting for the deliveryof the cable this afternoon results pending
Questions:
Any chance the PMI will pass with CAN FD/DoIP support?

Vehicle: 2024 F-150 Lightning XLT, VIN: 1FTVW3LK1RWG01883
FORScan v2.3.70, Mongoose-Plus J2534 Ford, TOPDON RLink J2534
@ZSC100 @rugedraw @hturnerfamily any help appreciated!
Thanks

I will put everything back to stock config and start again, they are very finicky when you start changing one number and then some things will just stop and stop working or be intermediate. There’s a lot of good writeups on here just put in ACC and then go off of that list and make sure that you input what I put on there for the IPMA to get the CCM started. I wouldn’t have used the AI to summarize things. It would really screw some things up. It’s not redefined in any way. Also the cable you have I never heard of but I just use OBD link cable to the forscan

 

[daniel2130]

Actually every modules are now wirh the asbuilt state. Except the bcm and ipma that it was stating that the number of values in the asbuilt from ford is not the same amount as in the device.
For the AI thing before i read all the 54 pages and i wanted to make sure to get the data used for the 2024 because there is alot of different year mixed in the thread i wanted to do a quick research but he was in a too much invincible state at first until i ask it to explain his steps but sadly it was the sccm that he made me change first before i ask for his reasoning

The mongoose and topdon cable are mainly to use FDRS to reset the sccm.

 

[daniel2130]

Hello everyone i have replaced my sccm and it is now working. I want to thanks @B177y i have used the instructions from this post and it worked great.

My '24 Pro ended up having some different values from the OP. I posted a list of my Forscan values here at post #553 and attached them to this current post. I started my project at post #531

What I ended up doing on the advice of many others here was to print a sheet of the suggested value changes, see what you have in each of those spaces currently and if anything is different, look it up in the @Livnitup spreadsheet to see what your value means. Print my attachment and compare what you have in each space before going back and writing your changes. Print or have the relevant sections of the Livnitup spreadsheet available while you do this too. In my sheet, the highlighted values are what I changed that were different than the OP values.

I had a value that didn't match anything previously done and it wasn't in the spreadsheet. It wouldn't write if I added the suggested value. Livnitup suggested to me to add 8 and see if it wrote, and it worked. It was: 7D0-05-01 xx*x xxxx xx-- Suggested change 0 to 8, I had a 1 and the spreadsheet didn't show that value, so I changed it to 9 and that successfully wrote and the ACC/LKA worked.

Good luck and keep us posted or ask for any help.

I am on my 3rd week of having a Comma.ai installed with BluePilot 3.0. I saw that you had previously shown interest in the Comma in some older posts on here. It works with this mod and it's AWESOME!

To help here is the part list i got for my 2024 xlt :
My dealership did a mistake i asked for the whole assembly but they ordered just the radar module so i had to purchase the rest of the parts individualy.
- Support : ML3Z-14C022-A (its including the adjustment bolt)
- Radar module plastic bracket : ML3Z-14C022-B
- radar module pigtail : WPT1198 ( i re-used the extra length of the wire to crimp it in the IPMA plug
- Switch assembly :SW8937
- the Cruise control module : SL3Z9E731A
- pins to insert into the ipma connector : https://www.digikey.ca/fr/products/detail/1924955-1/17989627

Its better to use easy mode for the sccm module or else it can brick the module like I did.


On my 2024 when a SCCM module is replaced he always give a dtc saying its missing its initialisation but ill do it when ill get again a FDRS subscription so i could test during a couple of days and then upload to cloud the new values i changed so it would be persistent if the dealership do an update.

Thank to Everybody's who helped me to troubleshoot!

 

[ZSC100]

Hello everyone i have replaced my sccm and it is now working. I want to thanks @B177y i have used the instructions from this post and it worked great.


To help here is the part list i got for my 2024 xlt :
My dealership did a mistake i asked for the whole assembly but they ordered just the radar module so i had to purchase the rest of the parts individualy.
- Support : ML3Z-14C022-A (its including the adjustment bolt)
- Radar module plastic bracket : ML3Z-14C022-B
- radar module pigtail : WPT1198 ( i re-used the extra length of the wire to crimp it in the IPMA plug
- Switch assembly :SW8937
- the Cruise control module : SL3Z9E731A
- pins to insert into the ipma connector : https://www.digikey.ca/fr/products/detail/1924955-1/17989627

Its better to use easy mode for the sccm module or else it can brick the module like I did.


On my 2024 when a SCCM module is replaced he always give a dtc saying its missing its initialisation but ill do it when ill get again a FDRS subscription so i could test during a couple of days and then upload to cloud the new values i changed so it would be persistent if the dealership do an update.

Thank to Everybody's who helped me to troubleshoot!

First time I've seen someone say "It's better to use easy mode for the sccm module" but this is great general advice. If you can accomplish something by using easy mode by all means, it eliminates the risk of accidentally messing with the wrong memory location.

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