Seat Retrofit -- New Module is throwing codes

[IMAY2023]

So, After you install your new SWM to the car and perform readout, Either heated steering wheel or reload SWM or both should show up under "Hardware changes" TAB. 
If it's both, first install the heated steering wheel.  It might already contain the SWM software in it.  
If it's only showing SWM, you will need to install it and do a new redout. You should see heated steering wheel under the functional changes.