My drivers side power door lock works sometimes and now the rear passenger lock is not working. Is there a relay or fuse to replace? I can still hear the actuator working and the button moves a little

2007 Ford F-150

 

Welcome to the forum. Hopefully someone will be able to help you. You might post the information on your truck such as year, etc.

 

Welcome to the forum !
Share a pic of the truck.

If you can hear and see it trying to move, I would take it apart and look for where it's binding and grease it.