Have been having some issues with my drivers side locking system lately. Thinking it is the actuator but haven't ripped apart the door to actually test the voltage coming from the contacts. Symptoms are that both the passenger and hatch locks work with key fab. The key fab will not lock the drivers side and the electric switch inside the door will not work on the drivers side. (This is the only interior electrical locking switch inside the car.) Sometimes I can hear the actuator trying to work on the drivers side but the motor will not engage. Any help is very much appreciated... It just worries me about the interior electrical lock switch not working.

 

sounding like an actuator. Only testing it will tell.

 

Yup! Actuator. There is a DIY on youtube, search it.