I printed the TIS insrtuctions for removing and installing the front door locks for a 2002 E39 salon. There is no specific mention of the door lock actuators anywhere. To find these instructions, you need to go to:
51 Body Equipment
21 Front Door Locks
Interstingly, it does not require loosening of the window rails, like the video. And I am guessing that the door lock actuator is a part of the door locking unit? I'll find out soon...