thanks for your question.
Yes, the door lock actuators are the problem. I believe they are around $70-75 a piece. They attach right to the door latch inside the door. You will have to remove the door panels and patially remove the door latch to install them.
Thanks
FORD MOTOR COMPANY CAR AND POWERSTROKE SPECIALIST FOR OVER 16 YEARS. ASE MASTER SINCE 1991. CURRENTLY WORK AT A MAJOR FORD DEALERSHIP. GIVE ME YOUR FORD PRODUCT QUESTIONS, IF I HELPED, PLEASE HIT THE ACCEPT BUTTON. EXPERTS QUESTIONS ON FORDS WELCOMED