In order to lock the doors click the center button which is the round bmw logo.
How to lock bmw door.
To unlock the door simply touch the top button with the arrow.
Learn how to use the door lock and unlock button and additional features in idrive in you bmw.
Touch the button again to open the passenger doors.
Approach the car and grab the handle.
Final video showing you how to repair your bmw e46 door lock.