Hi to check whether your x7 has the factory dashcam just keep the camera button on the left of your gearlever pushed down for three-four seconds. If you have it, the iDrive will ask if you want to start recording. You will then have footage starting 20 seconds or so before you pressed the button plus 20 seconds afterward. This is manual mode. In case of an accident I believe it records automatically. If you don’t have it you might be able to purchase this function as a bmw app.