2017 F250 Seat swap witha 2018 F150
Posted: Thu Oct 09, 2025 11:44 pm
I recently just placed 2018 F150 lariat seats with a DSM in my 2017 F250 XLT. I have the 10 way power all working but am struggling to get the heated/ventilated portion to function. The buttons function and the seats are wired with an adapter harness from bigbluecustoms. I can load a 2019 F150 profile and rewrite the DSM through it, but when I reconnect to the superduty it still doesn't recognize that a DSM exsists. I am not sure I enable the correct coding for the DSM in the BCM. Anyone know which block in the BCM enables the BCM? Has anyone done this conversion? Or, does anyone have any thoughts?