My sister's 2010? Access (Class C) is like that, power locks (in the cab only) and no remote. The little bit of research I did for her and my brother-in-law said that there wasn't an easy way to add a Ford remote to the system.
Given that the cab already has power locks, it wouldn't be too hard to add an aftermarket remote system, lots of options there. Adding a power lock to the side door would be more work. I added one on my Adventurer. Love it (also added a Ford Keypad - no more carrying keys), but quite a bit of work.