2003 Corolla LE Power Door Lock Won't Work

Hi There,

I own a 2003 4 Dr Corolla LE Automatic, with the power package (power doors, power windows, Toyota VIP alarm). Hoping to ask for feedback on the following problem:
1. If using the key on the drivers side door to lock/unlock, the car locks/unlocks fine.
2. If using keyless entry, however, all doors appear to lock/unlock EXCEPT the driver door.

For the past few months, I've just been locking/unlocking with the key, but a friend recommended this site as some experts who might be able to tell me what the root issue is.

Has anyone experienced this or know how to fix/what might be wrong?

Any help would be appreciated. Thanks in advance.