Start by checking the 25 amp fuse in location # 18 of your fuse panel (located on the driver's end of the dash - visible with the driver's door open.) This fuse is for the driver's door unlock relay, all unlock relay, and all lock relay. I'm not sure if the relays are located in the jack storage compartment like my 1995 XLT, but if nothing works it's most likely the fuse.
On a 1998 Ford Explorer : Yes ( as long as none of the key cylinders has been changed )
you might have the child safety locks activated
Automatic door locks engage on the 2003 Ford Explorer for safety.
It can have power locks with out keyless.
On a 1995 Ford Explorer : In the power distribution box ( which is " live " ) located in the engine compartment on the drivers side ( in the 2nd row from the drivers side , and in the 3rd space from the firewall end of the box , is a 30 amp maxi fuse for the power door locks , power windows , and power seats )
The door locks are not computer controlled.
On a 1997 Ford Explorer : The ( # 10 maxi fuse ) is a light green color 30 amp fuse for the power windows , door locks , and seats ( 2nd row from driver side , 3rd maxi fuse from firewall end )
No, the door on a 1998 Ford Explorer will not fit a 1992 Ford Explorer.
Under the hood, #10, a 30A Maxi fuse, controls power seats and windows too.
Check the fuses in the power distribution block (under the hood)
Your 1998 F150 has 3 relays for your power door locks : an all unlock relay / a driver unlock relay / and an ALL LOCK RELAY I'm guessing that the ALL LOCK RELAY has failed I'm sorry but I haven't found the location of the power lock/unlock relays on your F150 yet ( does anyone know the location of the power door lock / unlock relays on a 1998 F150 ? )
I have 1998 it is your door jam switchs