Which TCCM do you have?

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I am asking for people who have a 2022 F150 Lariat, King Ranch, or Platinum without the E-Locker to share the engineering number from their TCCM module. It appears that Ford does not know the correct TCCM for many of these trucks and the part number they provide for service is incorrect. I would love to see which module was actually installed in these trucks. I am not asking for your VIN, just the numbers on the TCCM. Be sure to include your model. The TCCM is located where the floor meets the firewall near the passenger side kick panel. Here are some photos of my original unit to help.

Back story: After swapping my electronic rear differential (E-Locker) for a Truetrac on my 22 F150 Platinum, I ran into some issues trying to find the correct TCCM for a truck with a 2TOD but without an E-Locker. I found several trucks for sale online with a 2TOD and no E-Locker and attempted to look up the correct TCCM part number. A couple of dealers could not find a TCCM listing for some of those trucks, while some came with the part number ML3Z-7E453-P (TM-377).

ML3Z-7E453-P is listed as “F-150 TOD transfer case Without elect. locking diff.. From 07/22/21.” That module wears the engineering number of ML3A-7H417-SA. So, I order a new one from Ford. When I tried to PMI it with FDRS using one of the VINs for a truck that is supposed to use this module, it kept failing. So, I found someone selling the TCCM on ebay and used the VIN for the truck that it was removed from. I used that VIN to PMI the module and it PMI’d without any issue. Well, the PMI worked, but the module had some DTCs. Reading the DTCs I immediately saw the problem. The DTCs were for a failure to communicate with the eIWEs. I have a 22, so I don’t have eIWEs.

So, with the help of another member on the forum, we identify a TCCM that appears to be a unicorn in the Ford parts listings. The module we indentified wears engineering number NL3A-7H417-DA and it is a TCCM used in 2023 trucks with a 2TOD and without an E-Locker, but we cannot identify any Ford part number associated with it. Without a Ford part number, the only choice is to purchase a used one. Update 9/20/24: I identified the 23MY part number NL3Z-7E453-B - see below.

I ordered the used module and then took the VIN from the truck it came from to check the part number with Ford. The dealer came back with the –P TCCM part number. WRONG! Update 9/20/24: The first few online dealers provided the same incorrect part number, my local dealer came up with the correct part number.

This is why I am asking people to share this number. I suspect that people who have a 2022 Lariat, KR, or Platinum will have this exact same issue if they try to look up the correct TCCM. Ford’s listing for the TCCM for this specific combination seems to be wrong. It appears that the –P parts number is for trucks with eIWEs and the NL3A-7H417-DA is for trucks without eIWEs. Let’s see if that is the case.

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Here is a quick list of the known TCCM part numbers.

Motorcraft, Ford Part number and (engineering number):

• TM377, ML3Z-7E453-P, (ML3A-7H417-SA) - 4WD 2TOD No Locker from 07/22/21 (w/ eIWEs)
• TM379, ML3Z-7E453-R, (ML3A-7H417-TA) - 4WD 2TOD Locker / 4WD 2TOD 4Hi-Loc Locker (w/ eIWEs)
• TM383, NL3Z-7E453-A, (NL3A-7H417- CA) - 4WD 2TOD Locker (No eIWEs)
• TM376, ML3Z-7E453-N, (ML3A-7H417-VA) - 4WD ESOF Locker
• TM380, ML3Z-7E453-S, (ML3A-7H417-PA) - 4WD ESOF No Locker
• TM378, ML3Z-7E453-Q, (ML3A-7H417-NA) - RWD Locker
• TM384, NL3Z-7E453-B, (NL3A-7H417-DA) - 4WD 2TOD No Locker (No eIWEs)

I am continuing to update this list as new information is found.

Info about eIWEs has been added and does not appear in Ford parts systems at this time.

 

[SALEEN961]

Just to clarify, the part number listed on the TCCM will be the engineering number, and not the Motorcraft or Ford part number because Ford likes to make things more complicated than they have to be.

This list isn't exhaustive, but here's my cheat sheet for crossing referencing Ford, Motorcraft, and engineering part numbers for the 2022MY F150 TCCMs I've been able to identify thus far:

Motorcraft, Ford, Engineering
TM377, (ML3Z-7E453-P), (ML3A-7H417-SA)
TM379, (ML3Z-7E453-R), (ML3A-7H417-TA)
TM383, (NL3Z-7E453-A), (NL3A-7H417- CA)
TM376, (ML3Z-7E453-N), (ML3A-7H417-VA)
TM380, (ML3Z-7E453-S), (ML3A-7H417-PA)
TM378, (ML3Z-7E453-Q), (ML3A-7H417-NA)

 

[5.0Screw22]

Just to clarify, the part number listed on the TCCM will be the engineering number, and not the Motorcraft or Ford part number because Ford likes to make things more complicated than they have to be.

This list isn't exhaustive, but here's my cheat sheet for crossing referencing Ford, Motorcraft, and engineering part numbers for the 2022MY F150 TCCMs I've been able to identify thus far:

Motorcraft, Ford, Engineering
TM377, (ML3Z-7E453-P), (ML3A-7H417-SA)
TM379, (ML3Z-7E453-R), (ML3A-7H417-TA)
TM383, (NL3Z-7E453-A), (NL3A-7H417- CA)
TM376, (ML3Z-7E453-N), (ML3A-7H417-VA)
TM380, (ML3Z-7E453-S), (ML3A-7H417-PA)
TM378, (ML3Z-7E453-Q), (ML3A-7H417-NA)

Nice catch. I see I copied the list without the engineering numbers. I will correct that.

 

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Using a 23MY VIN from a Platinum with no E-locker and with no eIWEs, I was able to identify the Ford part number and the engineering number for the TCCM that I sourced. I have updated the list with this info: TM384, NL3Z-7E453-B, (NL3A-7H417-DA) - 4WD 2TOD No Locker. I am currently testing that unit to see if it will work properly as a replacement for the 2022 models. I have confirmed this is also the correct TCCM for a 2022.

 

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SOLVED!

The parts guy at my local dealer was able to figure this out and explain why I was being given the wrong Ford part number by multiple Ford parts departments online. You may find this information very handy if you ever see this with other Ford parts inquiries. This is an issue within Ford's parts system.

If you take the VIN number from a 2022 or 2023 F150 that came equipped with the 2TOD and without the electronic locking differential, the Ford parts system will not list a part number for a TCCM for that truck. What most parts guys do at that point is to remove all filters from the search to review the modules that match the equipment on the truck. In this case, the correct module will not be displayed and the one that appears to match is not correct for the truck. Using that method would point you towards ML3Z-7E453-P, which is incorrect.

My local Ford parts guy says when you get no results on the VIN search, the best way to be sure you are identifying the correct number is to look at the HVBOM for the vehicle. By looking at HVBOM, he was able to provide me with the correct TCCM part number, which is NL3Z-7E453-B. Fortunately, that is the used part that I had recently purchased.

The lesson here is that when the initial search for the part number using a VIN shows no results, you need to use HVBOM to find the correct part. Removing all filters may be faster and work most of the time, but that method can provide incorrect information.

I think part of the reason that the correct number does not display is due to how this part was entered into the system. If you search those two ford part numbers, you will see that the -P number shows year and model application info. When you search the -B number, the Ford parts system shows no info about that part or what it fits.

-P is for trucks with eIWEs and -B is for trucks without, even though neither part is identified as such in the Ford parts system.

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