Originally Posted by BMWZ4
If I'm not mistaken, you need to sign-up for BMW assist.
the person i spoke with at BMW assist said that they can locate the car via triangulation using the onboard cellular connetion for BMW assist. YOu will have to of course get a police report and supply that to BMW Assist and then they work directly with your police department to coordinate the recovery.
I will also say that once you get the car to activate BMW assist you must call them using the onboard call function. (Press the BMW assist button) they will run through a series of questions about you and the vehicle to get your account setup.