help me with some part numbers for my door locks please

[Tucson4runner]

Hey guys,

Every year when it gets hot my doors stop unlocking with the remote and my drivers side door never works to unlock with the key, forcing me to manual unlock my passenger door with my key and reach over to unlock my drivers door. I was able to locate the 4 front door lock actuators on Rock auto but I can't find the tailgate lock actuator.

My question is, can anyone help me locate the tailgate actuator and will purchasing a new door lock cylinder fix the power unlock feature my driver door should have?

Thanks for your help guys.

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[HiLife]

On the end of the door lock is an electrical pig tail. Make sure that the two plastic prongs are still connected to the lock. There is a slot on the pig tail that matches up with the lock. As the lock turns...it turns a switch in the pig tail. The pig tail send signals through the ECU to other doors to unlock.
The pic is the rear hatch lock. The doors are the same principal.