For anyone with a 2022 Tradesman doing this, I was successful today following the above procedures.
To recap, I had to do all of the following.
Purchase:
Micro-switches on Amazon - $9
AlfaOBD - $55
OBD EX (I bought the cable version, but MX+ bluetooth seems to be more common) - $50
KoadTech Bypass Cable -$55
Work:
1. Solder microswitches onto key fobs. (I also did tailgate release, worked immediately with no computer adjustments)
2. Install Bypass Cable
3. Start truck, hook up OBD cable, start AlfaOBD, connect, and change the following settings:
- VehConfig-1 Remote Start Present - YES
- BCM, Cust.Set.Menu 1-Sound Horn with Remote Start CSM Present- YES
- CBC I/O: Connector A Pin 11: Hood Ajar Switch Input Present- YES (It seems for 2022 this is already enabled because my truck came with the switch from the factory and it was already on YES)
4. Disconnect AlfaOBD, unplug all the cables. Turn off truck. Turn on truck. Drive over 30 MPH. Turn off truck.
5. Success! Both fobs worked perfectly immediately and I had none of the issues with not being able to unlock it afterwards (so far).
When I unlock it and get in, no codes, no issues. Display reads "Remote Start Active" and I just hit the start button and it's good to go.
Good luck to anyone else trying to add unlock some functionality to their truck!