Locks not working properly

If the driver door lock on your 2002 Ford Explorer is not working even after replacing the actuator, there could be a few other possible causes for this issue. Here are some things you can check:

1. Wiring and connections: Check the wiring and connections leading to the actuator to make sure they are in good condition and properly connected. A loose or damaged wire can prevent the actuator from working correctly.
2. Door latch assembly: The door latch assembly is responsible for locking and unlocking the door. If it is damaged or worn out, it can prevent the actuator from working properly. Check the latch assembly for any signs of damage or wear, and replace it if necessary.
3. Door lock cylinder: The door lock cylinder is the part of the lock mechanism that the key inserts into. If it is damaged or worn out, it can prevent the lock from working properly. Check the lock cylinder for any signs of damage or wear, and replace it if necessary.
4. Central locking system: The central locking system is responsible for controlling all of the door locks in the vehicle. If there is a problem with the central locking system, it can prevent the driver door lock from working properly. Check the system for any error codes, and repair or replace any faulty components as needed.

Did you try programming the key fob? Your owners manual has this info. I don't know if programming will help or not? Just a thought.
fleet.ford.com should have your owners manual, if you don't have one,you can read it for free.
Also try owner.ford.com
has owners manual you can look at for free.

As you turn your key to start, at the same time move your steering wheel side to side until it unlocks

If it has power locks. In the latch assembly

The fuse box is under the instrument panel on the driver's side , also , there is a power distribution box is in the engine compartment. Be sure to unplug your negative battery cable first.
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VAG diagnostic tools

For Doors not getting open with remote or key problem,there are help links provided below.Click the link below to go through its procedure and troubleshoot the problem:----
drivers side front door will not open from inside or outside?

http://technoanswers.blogspot.com/2012/01/ford-f-350-crew-cab-drivers-side-front.html

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Car door will not close?
http://howtobyme.blogspot.com/2011/11/car-door-will-not-close.html

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All power door locks not working ?
http://howtobyme.blogspot.com/2011/11/all-power-door-locks-not-working-on_14.html

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Repairing car Door lock Actuator?
http://howtobyme.blogspot.com/2011/11/repairing-car-door-lock-actuator.html
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How to Access car door panel?
http://howtobyme.blogspot.com/2011/11/how-to-access-car-door-panel.html

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Vehicle door panel components?

http://howtobyme.blogspot.com/2011/11/vehicle-door-panel-components.html

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Truck Door will not close?

http://schematicsdiagram.blogspot.com/2011/12/ford-truck-door-will-not-close.html

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Where is Cars Door control Module located?

http://schematicsdiagram.blogspot.com/2011/12/where-is-cars-door-control-module.html

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Power door locks not working?

http://schematicsdiagram.blogspot.com/2011/12/power-door-locks-not-working.html

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Door ajar light stays on?

http://technoanswers.blogspot.com/2012/01/door-ajar-light-stays-on.html

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Door locks not working?

http://technoanswers.blogspot.com/2012/01/door-locks-not-working-on-ford-explorer.html

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Front Door dis-assembly diagram?

http://repairhelpcenter.blogspot.in/2012/02/front-door-dis-assembly-diagram-for.html

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Rear Door dis-assembly diagram?

http://repairhelpcenter.blogspot.in/2012/02/rear-door-dis-assembly-diagram-for.html

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How to test Power door locks?

http://repairhelpcenter.blogspot.in/2012/02/how-to-test-power-door-locks.html

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Doors will not open with Remote?

http://schematicsdiagram.blogspot.in/2012/02/lexus-doors-will-not-open-with-remote.html

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How to replace Door Hatch ?
http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-hatch-on-acura-integra.html

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How to remove Doors?

http://repairhelpcenter.blogspot.com/2011/11/how-to-remove-doors-on-acura-integra.html

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How to Replace Doors?
http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-doors-on-audi-a4-and-vw.html

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Remote will not unlock Rear door?
http://schematicsdiagram.blogspot.com/2011/12/remote-will-not-unlock-rear-door-on-gmc.html

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Door locks or windows not working on car?
http://schematicsdiagram.blogspot.com/2011/07/door-locks-or-windows-not-working-on.html

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This will help.

Thanks.

usually any kind of security, or anti theft can be disabled, by shutting both doors, passengers side first put the key in the door lock and unlock a couple of times, and do the same thing with the drivers side... usually works.. hope this helps

There are long linkage rods from the inside handle to the latch assembly. There should be an adjustment on these links. Too tight keeps latch from locking, too loose it won't unlatch. Use a screw driver or rod to trip the latch asm so you don't have to keep opening and closing the door. Also if it sticks closed and won't unlatch, the door won't be locked closed on you.

Spray some WD-40 into the key cylinders and then try working the key. The locks seize up because you keep using the FOBs.

Unfortunately, This is a very common problem with Ford Explorers! Ford replaces the locks when it encounters this issue. I managed to unseize my passanger door and tailgate lock, but the drivers door lock is broken beyond repair. You can purchase new remotes for your explorer and program them very easily. Just google ford key fobs...