Not sure what you are trying to do. But, You can go directly to Google Maps via Safari, as opposed to the new Apple maps app. From google maps click share, and send to car, Choose BMW enter your email that you used to set up BMW assist, and voila. Can also do from any computer, tablet, etc. Your phone does not need to be connected.
You do not have to pay for the extra BMW Assist in order to use this function.