Automatic Door Locks on '01 Escape

I bought a used 2001 Escape and the automatic door locks do not function when the vehicle is put in gear. I checked the manual and can't find anything on how to get the doors to automatically lock when the car is put in gear. I have to do it manually. Anyone know how to fix this?

I don't think that they should. If memory serves, on some Fords, the doors will usually lock once the vehicle has gotten up to ~20mph, but I don't believe that they lock as soon as you put it into drive.

My '99 Explorer always locked the doors as soon as the car was put into gear (reverse or drive). This feature is usually standard on most/all cars.

No they do not lock automatically...that would cost the manufacturer more money to do.
Mine is the same. This is not an Explorer, it is a cheaper SUV.