2018 Tacoma Transmission Swap

First post on the forum but have used information from here for a while. Please see below for current specs on my vehicle:

Year:2018
Make: Toyota
Model: Tacoma SR5
Engine size: 3.5 V6
Odometer: 114000 approximately



Is a lift installed: 2 inch front/ rear (Bilstein 6112/5160, Ironman 4x4 Medium Leafs)
Aftermarket components: ARE Camper Shell, Granite Alloy Wheels, 285/75/R16 tires, 5.29 gearing with ARB air locker, ARB single compressor
Is there an alarm system installed: N/A
When did you first notice the problem?: N/A
How often does it occur?: N/A
What have you ALREADY replaced to try and fix it?: N/A
Have you checked codes?: N/A


I am looking into doing a 4x4 conversion for my 4x2 vehicle. I am planning on using FJ Transfer case with the Gen 3 4x4 auto transmission. I have a pretty good understanding of the process from other threads, but need further information that I have not found yet. If I swap a used 4x4 transmission into my vehicle, will there be any problems with the TCM or ECU on my vehicle? What I don't want is to do the swap, and then have an undriveable vehicle due to electronics. If a reset is needed what is the best way to accomplish this without going to a dealership or frying every electronic system in my vehicle? Any help would be greatly appreciated.