Some links, and good .pdf for download.

http://www.benzworld.org/forums/w163-m-class/1245878-replacing-front-door-lock-actuator-machine.html

http://www.benzworld.org/forums/w163-m-class/1417771-diy-thread-collection-2.html

Scroll to 4th post on 2nd link. Great .pdfs for DIY.

Dickie

00 ML320
06 325i