On my 2016, I added a hood switch...but it could not be enabled via Forscan. You CAN enable it for the IPC....but IDS is required to make the truck see the switch. Meaning, even if it's enabled for the IPC....it won't appear until IDS is used.
In IDS, remote start needs to be activated, and then the truck will see the hood switch.
You still need an aftermarket system to make remote start work in the 2016 and later units.
I turned on the perimeter alarm in mine via Forscan.
I used a Fortin EvoAll in mine, and that unit can be set up for no hood switch, as mine worked without a hood switch. Here's the crazy part...once IDS enabled the hood switch...the remote start doesn't work if the hood is open. (Perfect)
It's important to know that the aftermarket remote start is needed to only turn on the factory remote start system...