Passenger door handle ticking/ clicking/croaking when car is locked

[stanleycruiser]

Hello everyone. Haven’t been on this forum in over a decade. It has changed a lot and gotten more complex. Bought a 2013 200 series a couple months ago. Would this be the door actuator? I wonder if it’s the door handle sensor that allows you to open door without key. At first I thought a cricket was on the car and then after listening closely the sound comes from the drivers side passenger door handle. Doors lock and unlock fine. Sound is always there after locking the doors. Does it all night long. This morning I notice a ticking clicking sound. Thanks for looking at this post.

 

[Fisher23]

There is the automatic locking of the doors after you have left the vehicle.
It sounds like it has not detected the doors have locked and is repeating the locking of the doors.
If you manually lock the doors does it still do it?
I am not familiar with the 2013 .. there maybe a setting option to turn this of vs fixing the issue.