I have a 23 f150 and it didn't come with the controller. I pulled the coin holder off and the wire is for the controller is plugged into the coin holder. I also know that I need a new computer module and it's located under the driver side dash.

I know the part number is ML3Z19H332AB but is it as simple as plug and play or do I need to change some settings through the obd port?

 

You enable it with FORScan, see this post for source of these instructions (mine came with TBC so I have not personally done this, just posting FYI)

1. Purchase ML3Z-19H332-AB from whatever Ford dealer you wish.

2. Remove coin holder from dash using plastic trim tool. If you pull on it outwards it'll give you a little bit of space to wedge a trim tool behind it and pop it out the rest of the way.

3. Disconnect the connector from the coin holder, connect the trailer brake control switch, and pop it into the dash. It will only fit in one way.

4. Remove old trailer brake module from driver's footwell area by unplugging both gray and black connectors, removing the two 10mm bolts, and pushing the module upwards to disengage the plastic clip from the bracket.

5. Install new trailer brake control module and reconnect connectors.

6. Fire up FORScan and load the vehicle, enter the module configuration and programming section (looks like a computer chip), enter the IPC module configuration (highlight it and press the play button), scroll down and change Trailer Brake Controller and Trailer Brake Gain Setting to Enabled instead of disabled, then click write. Cycle key.

7. Clear all DTC's under the DTC button, cycle key, and read DTC's. You should have one under TRM for module not configured. Enter module configuration and programming again, but this time go into as-built data for TRM. There will be a button to load as-built data for the module from the internet. Load it, write the new values, clear DTC's, and cycle key again.

8. Re-check for DTC's and you should have none stored. Squeeze the trailer brake controller switch and press the gain up and down buttons and verify the in the cluster display all functions are working.

9. Congrats!

 

Thank you so much for the in depth walk through. If i have any hiccups ill definitely reach out.

 

As I said, I've not done this (these are not my instructions). If you have hiccups please see the linked post / thread on 'the other forum' and ask for help there.