This question is simply one of curiosity for car owners who modify vehicles into something that was never offered for sale - such as some of you who are changing your Sync2/MFT to Sync3 which wasn't offered in 2016 Explorers (except the end-of-the-line models, if I read correctly).
What happens when you trade in your vehicle that, like an early model 2016 Explorer, was never offered with Sync3? Adding such a significant component, especially one that, if not installed exactly right, could lead to major problems for the next owner - like maybe you sell your car that you, yourself, installed Sync3. And, just to complicate things, lets say that your vehicle has years left on an Extended Warranty (ESP) that you transfer to the new owner or they purchase. What if the NEW owners of this modified car start having issues? The Sync module is greatly tied in with the entire car, is it not? If there is a ESP, they can deny payment, since it was not an OEM part and there would be no record of it being installed by authorized service agent - couldn't they?
What's everyone's answer/opinion to these type of aftermarket, DIY upgrades?