Notices
2017 - 2022 Super Duty The 2017-2022 Ford F250, F350, F450, F550 & F600 Super Duty Pickup and Chassis Cab
Sponsored by:
Sponsored by: CARiD

Adding Factory E-Locker to Open Diff Truck?

Thread Tools
 
Search this Thread
 
Old Nov 25, 2024 | 08:55 AM
  #61  
austinb1017's Avatar
austinb1017
Cross-Country
5 Year Member
Liked
Joined: Apr 2019
Posts: 84
Likes: 19
Yes sir it did. I ended up buying the factory harness, switch, and a TCCM from a truck with a locker. The locker works, however I have not been able to figure out the proper forscan changes to get the truck to recognize the TCCM as it should. It works but it gives me a "service 4x4" message on start up. May just stick with it hooked to an AUX switch if I can't figure it out. Not many people have made these changes on a 23+ model yet. My tuck is a 2024 also. I believe on the 17-22 models you can change the TCCM without having to make any additional changes.
 
Reply
Old Feb 27, 2025 | 01:45 PM
  #62  
Tmesic's Avatar
Tmesic
Trailering
Liked
Loved
Joined: Oct 2021
Posts: 23
Likes: 11
Any updates on this?

I'm trying to do this and have the E locker axle in my truck with the dummy plug.

What harness do I get to plug in the differential and what does it plug into on the truck side?

I am ordering 4x4 control module and switch.

I don't know if I need anything else?

Tim
 
Reply
Old Feb 27, 2025 | 01:46 PM
  #63  
Tmesic's Avatar
Tmesic
Trailering
Liked
Loved
Joined: Oct 2021
Posts: 23
Likes: 11
Also I don't have enough posts yet to PM anyone.

Any help would be appreciated.

Thanks.

Tim
 
Reply
Old Feb 27, 2025 | 05:12 PM
  #64  
austinb1017's Avatar
austinb1017
Cross-Country
5 Year Member
Liked
Joined: Apr 2019
Posts: 84
Likes: 19
Originally Posted by Tmesic
Any updates on this?

I'm trying to do this and have the E locker axle in my truck with the dummy plug.

What harness do I get to plug in the differential and what does it plug into on the truck side?

I am ordering 4x4 control module and switch.

I don't know if I need anything else?

Tim
I will find the part number for the harness and post shortly. You need the harness, switch, and tccm for locking axle. I have done it and the locker works, but still haven’t figured out how to configure the tccm so that I don’t get error messages.
 
Reply
Old Feb 27, 2025 | 08:09 PM
  #65  
Tmesic's Avatar
Tmesic
Trailering
Liked
Loved
Joined: Oct 2021
Posts: 23
Likes: 11
Originally Posted by austinb1017
I will find the part number for the harness and post shortly. You need the harness, switch, and tccm for locking axle. I have done it and the locker works, but still haven’t figured out how to configure the tccm so that I don’t get error messages.
Great thanks!

Have you used Forscan to see if that fixes it?

If so what have you tried?

I really appreciate you helping.


Tim
 
Reply
Old Mar 3, 2025 | 12:04 PM
  #66  
austinb1017's Avatar
austinb1017
Cross-Country
5 Year Member
Liked
Joined: Apr 2019
Posts: 84
Likes: 19
I hooked it up to forscan awhile back, and it had where I could reconfigure modules that were faulting. It's been awhile now so I can't remember exactly, but it was things like the Transmission control module, not specifically the TCCM. I think this could possible fix it, but I was afraid to go through and reprogram those without knowing exactly. I would love to have some more input, as this is the last step to having a factory functioning locker.

Also, I found the part number for the axle harness. PC3T-15K857 It was a very simple install. The harness goes into a connecter right under the bed, so it's just from there down to the axle and the few connections.
 
Reply
Old Mar 3, 2025 | 12:05 PM
  #67  
austinb1017's Avatar
austinb1017
Cross-Country
5 Year Member
Liked
Joined: Apr 2019
Posts: 84
Likes: 19
I will check into the exact Forscan messages again when I can. I have an Apple computer so I have to borrow a laptop to use Forscan.
 
Reply
Old Mar 8, 2025 | 12:43 AM
  #68  
Tmesic's Avatar
Tmesic
Trailering
Liked
Loved
Joined: Oct 2021
Posts: 23
Likes: 11
I was able to order the correct harness and module for my year.

it should be here late next week.

From what I gather the TCCM has to be programmed with the correct as built data.

The correct data I'm having trouble finding.

I need someone with a 2023 F350 and the ELD to give me the as built code for the TCCM.


Tim
 
Reply
Old Mar 8, 2025 | 01:52 AM
  #69  
Tmesic's Avatar
Tmesic
Trailering
Liked
Loved
Joined: Oct 2021
Posts: 23
Likes: 11
I found how to get s built data. I was able to get a vin and have the data. Tim


https://www.motorcraftservice.com/asbuilt
 
Reply
Old Mar 10, 2025 | 01:30 PM
  #70  
Tmesic's Avatar
Tmesic
Trailering
Liked
Loved
Joined: Oct 2021
Posts: 23
Likes: 11
Success!!!

It was pretty difficult but I figured it out.

The newer trucks with electric parking brake have a different harness.

I can make a thread on how to if anybody is interested or PM me.

My truck is 2023 Platinum. I had the E locker differential but it wasn't ordered with like the other guy in here.


Needed switch, harness and AWD module and forscan.

Tim

 
Reply
Old Mar 10, 2025 | 01:33 PM
  #71  
Tmesic's Avatar
Tmesic
Trailering
Liked
Loved
Joined: Oct 2021
Posts: 23
Likes: 11
Also the way I read my manual if the truck is in Off road drive mode or 4 LOW the differential does not unlock.

I have not tested that part yet.

Tim

https://www.fordservicecontent.com/F...&buildtype=web
 
Reply
Old Mar 10, 2025 | 02:02 PM
  #72  
Tmesic's Avatar
Tmesic
Trailering
Liked
Loved
Joined: Oct 2021
Posts: 23
Likes: 11
Originally Posted by Idibob
You know all you all had to do was buy an Eaton e locker and wire it up to a switch. Why go through all the hassle to further mess with your factory crap computer.
Not true. I checked with anyone who sells differentials and/or lockers and NO ONE makes one because this truck already has lockers in the differential. So, why don't you prove me wrong. I'll give you my VIN and show me the Eaton locker that fits it. Besides, I have $300 into this.

Tim
 
Reply
Old Mar 20, 2025 | 02:01 PM
  #73  
Tmesic's Avatar
Tmesic
Trailering
Liked
Loved
Joined: Oct 2021
Posts: 23
Likes: 11
Originally Posted by austinb1017
I hooked it up to forscan awhile back, and it had where I could reconfigure modules that were faulting. It's been awhile now so I can't remember exactly, but it was things like the Transmission control module, not specifically the TCCM. I think this could possible fix it, but I was afraid to go through and reprogram those without knowing exactly. I would love to have some more input, as this is the last step to having a factory functioning locker.

Also, I found the part number for the axle harness. PC3T-15K857 It was a very simple install. The harness goes into a connecter right under the bed, so it's just from there down to the axle and the few connections.

I'm betting you need to rewrite the code to the module worh Forscan

You need a VIN on an identicle truck that has the ELD.

Use motorcraft as built website to find the code you need.

The modules you are looking for are 703-163-01 to 703-163-07

You will likley find only a couple of letters or numbers different on a couple of those lines

Rewrite your new module to match the truck you use for a reference.


You can vins for sale and make sure it's the same model year and trim level.

If you need help I'd be happy to help.


Tim
 
Reply
Old May 15, 2025 | 01:56 AM
  #74  
25Plati's Avatar
25Plati
3rd Gear
Joined: May 2025
Posts: 3
Likes: 0
Originally Posted by Tmesic
Success!!!

It was pretty difficult but I figured it out.

The newer trucks with electric parking brake have a different harness.

I can make a thread on how to if anybody is interested or PM me.

My truck is 2023 Platinum. I had the E locker differential but it wasn't ordered with like the other guy in here.


Needed switch, harness and AWD module and forscan.

Tim
can you send me the info I need to do this please. My 25 Platinum order showed up with an open diff when I know I ordered the 3.31 licking diff. Thank you
 
Reply
Old May 15, 2025 | 07:49 AM
  #75  
Tmesic's Avatar
Tmesic
Trailering
Liked
Loved
Joined: Oct 2021
Posts: 23
Likes: 11
Originally Posted by 25Plati
can you send me the info I need to do this please. My 25 Platinum order showed up with an open diff when I know I ordered the 3.31 licking diff. Thank you
First you need to check your rear differential.

Look for a green "dummy" plug on the backside of your differential.

If you have that then you're half way there.

This gets fairly complicated so you need to be mechanically inclined to a certain degree.

It's not as simple as " send you the information "

You will need to do research to find the part numbers and be versed enough in Forscan to change code in some modules.


I can walk you through how to get it done but you need to do some legwork.


Tim
 
Reply



All times are GMT -5. The time now is 02:46 AM.