Yeah, 1 Key does not mean it is the admin Key...It just means somebody lost a key, and possibly the admin key if My Key was setup before.
BY FAR the best thing to do is get a Ford Dealer to clear ALL keys and add the one you have and a new one in. Worth the price to have the keys programmed correctly by a Dealer in my opinion. Like Andy said above, in most cases a 3rd party shop is using the clone method.
You do not need to lose a key on most aftermarket Remote Starts anymore, but I would check to see what price the dealer will do a factory remote start for. If you have factory warranty, prevents any issues, and you might be pleasantly surprised by the price. With that said, have loved my DEI/Viper systems in previous vehicles.
Yes is the quick answer on swapping from Sync Touch to the Full Sync 3 system. If you want Nav there might be more involved. Honestly, go take a look at the F-150 Forums, many have done the swap there. Not cheap if you want new. Jason @ http://www.fordpimods.com/sync-3-navigation-or-system-upgrade.html is a GREAT source of info and can probably help you build a kit. He is where the source files came from that are floating around that let us with Sync 3 1.1 upgrade to 2.2 6 months before Ford released it. GREAT GUY, and knows his stuff.
As far as trailer, you need to remember the towing capacity of an 16 Expy without the Heavy Duty Tow package is 6600. With the Heavy it jumps to 9100. If your Boat is under that, no issues, just splice the 5 Pin in and you are good. LOTS of instructions out there on how to do that, because not a Ford specific issue.
BY FAR the best thing to do is get a Ford Dealer to clear ALL keys and add the one you have and a new one in. Worth the price to have the keys programmed correctly by a Dealer in my opinion. Like Andy said above, in most cases a 3rd party shop is using the clone method.
You do not need to lose a key on most aftermarket Remote Starts anymore, but I would check to see what price the dealer will do a factory remote start for. If you have factory warranty, prevents any issues, and you might be pleasantly surprised by the price. With that said, have loved my DEI/Viper systems in previous vehicles.
Yes is the quick answer on swapping from Sync Touch to the Full Sync 3 system. If you want Nav there might be more involved. Honestly, go take a look at the F-150 Forums, many have done the swap there. Not cheap if you want new. Jason @ http://www.fordpimods.com/sync-3-navigation-or-system-upgrade.html is a GREAT source of info and can probably help you build a kit. He is where the source files came from that are floating around that let us with Sync 3 1.1 upgrade to 2.2 6 months before Ford released it. GREAT GUY, and knows his stuff.
As far as trailer, you need to remember the towing capacity of an 16 Expy without the Heavy Duty Tow package is 6600. With the Heavy it jumps to 9100. If your Boat is under that, no issues, just splice the 5 Pin in and you are good. LOTS of instructions out there on how to do that, because not a Ford specific issue.