The DIY at your own risk guide to adding Multi Contour Seats (MCS) to your Truck

CaseyJ said:
So can someone explain this? They removed the functionality from the MCS? As in this is what happens when you get a max recline seat or can you have both?
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A lot of the Platinum trim trucks that were ordered with MCS had them deleted due to parts shortages during assembly.

Max recline was an option on top of the MCS seats, so they are independent of each other.
 
Looks like another thing I’ll be staying away from in my search for a Tremor. I want both options, no delete for me!
 
CaseyJ said:
Looks like another thing I’ll be staying away from in my search for a Tremor. I want both options, no delete for me!
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It was a small number of builds if
I remember correctly.
 
CaseyJ said:
Looks like another thing I’ll be staying away from in my search for a Tremor. I want both options, no delete for me!
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I have two trucks - an f150 platinum with the messaging and an f250 platinum that had it deleted but had the max recline

I would suggest you try to find maybe a platinum with massaging and a lariat or something that doesn’t.

I find my platinum without massaging seats but with max recline (my f250 platinum with massaging delete ) vs my 24 f150 platinum with massaging seats.

Everyone has a different feel so not steering you one way or the other. But try to feel the difference. I actually prefer my f250 with the max recline but masssge delete because I can feel the airbags in the f150 in the middle of my back even at full deflate.
 
The 2023 I was about to buy had it deleted, luckily the wife wasn’t all in on it. 😂
 
Has anyone done the MCS add on and then have issues with the running boards afterwards?
 
I did not have any issues.

ZooDad
 
Hopefully someone can give me some ideas….
I put everything together and it all seemed good up front. After I did the programming through forscan, i got just the seat back multicontour; no seat bottom function. Also, when you adjust anything on the driver side seat, the screen says driver seat but shows it as the passenger seat.
After a day or two when I went to drive the truck again, the running boards were in the out position. I havent been able to get them to do anything since then.
 
Bigmech said:
Hopefully someone can give me some ideas….
I put everything together and it all seemed good up front. After I did the programming through forscan, i got just the seat back multicontour; no seat bottom function. Also, when you adjust anything on the driver side seat, the screen says driver seat but shows it as the passenger seat.
After a day or two when I went to drive the truck again, the running boards were in the out position. I havent been able to get them to do anything since then.
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So first off, are you using the 2023+ parts or the 2022< parts talked about in this thread? To be clear, the 23+ parts are 100% different and not interchangeable. What wiring harnesses are you using, the F150 ones or the super duty? Are your lumber bladders (which the MCS modules are a part of) new or used?

I have the same problem with the lower cushion not working, just on the driver's seat. My passenger seat is 100% functional. There's a great thread on the F150gen14 site; there's a guy over there with the same problem as well. He has some other control issues tho (I think he has a bad switch). The f150 and SD are not the same, but very close with a few documented differences. My attempts so far to sort it out: I have swapped the lower bladder between seats with no change. I have replaced the upper lumbar bladder (and module) with no change. The lower bladder module only has three wires at the connector; I've verified power and ground and traced the third data wire back up to the upper seat module. Updated all modules via FDRS (although, while FDRS can see the SCMG/SCMH modules and the SCMH showed an update available, couldn't get it to update). Cannot figure it out. The only thing about my setup is that my lower LH harness is the F150 version (SD backordered), but cannot find any differences in pinouts that would affect it. I have the SD one on order, so when it comes in (supposedly this month), I'll try swapping and see. If I had access to a truck that came with MCS seats from the factory, I would love to try and swap the seat in and see if it works, just to know if it's the truck or the seat.

My thoughts on the driver vs passenger weirdness you are experiencing: The lumber bladders (and therefore seat control modules) look the same but are NOT interchangeable left/right because of the modules. I wonder if you have a mismatch somewhere; two LH sides, or swapped, something like that which is causing the confusion.

As far as your PRB (power running board) problems: For whatever reason, the PRBs are wired/controlled through the seats (and modules). As a result, possibly related to the control problems you are having. Maybe wiring or modules are wrong somewhere (for a non-PRB truck?). Or if you have a mismatch like I said causing the seat control issues that could be affecting the PRBs. My bet would be it's related.
 
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I have a 2017 F250 KingRanch that came with massage seats; however, I upgraded to Sync 4, knowing it would affect the massage seats. Can anyone help me with the programming update to make the multi-contour seat modules communicate with the sync 4 APIM?
 
Delta1127 said:
I have a 2017 F250 KingRanch that came with massage seats; however, I upgraded to Sync 4, knowing it would affect the massage seats. Can anyone help me with the programming update to make the multi-contour seat modules communicate with the sync 4 APIM?
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You might want to reach out to @ZooDad for assistance with APIM changes .
 
I have a '23 platinum powerboost and bought a kit from a '26 250. i installed everything on the passenger seat only first. i loaded up forscan and did not see the scmh module show up even after a new search. is my truck compatible with the '26 f250 kit? it does have the decentralized pump system and notice the instructions here have the centralized. i did talk with zoodad and enabled it in the apim, but still didn't see the scmh show up. anyone ever do this combination or am in uncharted territory? any and all help is appreciated.
 
I think you are in unchartered territory I am afraid. If the modules are not showing up that means there is something going on preventing it. Its possible you may need to reset them (unlpug and plug back in). You may need to try a different module. Sorry could not be more help. Let us know how it goes and good luck.
 
summerclown said:
I have a '23 platinum powerboost and bought a kit from a '26 250. i installed everything on the passenger seat only first. i loaded up forscan and did not see the scmh module show up even after a new search. is my truck compatible with the '26 f250 kit? it does have the decentralized pump system and notice the instructions here have the centralized. i did talk with zoodad and enabled it in the apim, but still didn't see the scmh show up. anyone ever do this combination or am in uncharted territory? any and all help is appreciated.
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Same thing, scmh/scmg never show up for me either. What did you change in the APIM? On the <23 trucks I know there was an apim change that would cause the modules to appear, but never could find that change for the 23+ trucks, only a BCM change.

What I have been seeing lately is for the guys that have 75% functionality like I do (everything working except driver's lower bladder), you have to reload values in the SCMG from an MCS truck. But if you can't see the modules, then can't do that. There is a guy on the F150 forum/thread who swapped MCS into his max recline seats, and found power wire & can bus wires missing from the body side of the seat plug that he had to add in to get it working. I have checked my plugs though, and they were populated.
 
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