Some times the drivers door will not unlock with the outside pad or the key

Remove interior door panel and inspect linkage.

press the last two keys on your outside door keypad simultaneously, all doors should lock. if this doesnt work suspect the doorlock actuator inside the door panel

check your battery in key

the anti theft is working! try manually locking your doors,then wait 15 minutes,unlock the doors with key, the last door you should lock is drivers. lock all doors from inside but drivers, when you shut drivers door,lock it from outside with the key.leave it alone for about 15 minutes please! when you unlock it with the key, if the alarm goes off, disconnect the battery for 10mins. then start over,just remember to lock the driverside door from outside this time with the key!!!

FORD KEY PADS

• Enter permanent factory code
  
• Press the 1/2 button within 5 seconds to enter programming mode
  
• Within 5 seconds enter new code, doors will lock, unlock to verify code, this erases previous codes remotes will also need to be programmed. (MAYBE)
  

KEY PADS/REMOTES

• Insert key, turn ignition off-to- on eight times in succession, ending with key in on position doors will lock, unlock to verify in programming mode
  
• Press any button on new remote, doors will lock, unlock to verify
  
• Do the previous step with the second remote, doors will lock unlock to verify.
  
• Turn ignition off. Doors will again lock, unlock to verify.
  

NOTE-Some vehicles use 5 turns of the key instead of 8

It's unlikely you can rectify this problem by playing around with the CL system so you will need to take it to the dealer or auto electrician to fix.
In any event you should be able to manually lock all passenger doors on the vehicle from inside the car and the drivers door from outside with the key.

Before you take the car to the auto shop to fix the CL system try this if you have not already.

1. Manually lock - then manually unlock - all doors (except the driver's door) from inside the car and make sure they are fully shut.

2. Then manually lock all doors a 2nd time except the driver's door.

3. Hit the lock button on your car key pad to activate the central locking system. This should lock the drivers door but with the fault it probably won't. Wait a few seconds then hit unlock on your key pad. Wait again and then hit lock once more. If it will not lock all doors you know what to do next.

the door lock actuator is defective, they get really hard to move when they go bad, that is why the difficulty with the key.

Does the key pad on the door light up? Are there any tears in the key pad numbers? Does the key pad lock the doors?.
There are no fuses directly for the pad.. The key pad is linked directly to the RAP. module. If the locks work from the FOB the fuses for the Module are good. Chances are the pad is no good especially if it don't light up. The RAP module is above the driver side foot well, directly above the accelerator pedal . Hope this helps.