I am having the exact same issue as mustfahakimi above. I bought a fairly new Sprinter. The Becker map finder was working fine for about a week and then somehow the satallite (GPS) connection went off. I think I remember getting a message when I plugged my iPhone into the dashboard USB, got a message about which GPS to use. I must have clicked the wrong button. Anyway, I have done everything including reseting both the Audio 15 and the Becker Map Pilot. I also tried putting another Becker Map Pilot module from a friends MB Sprinter that we knew worked. It did the exact same thing and would not connect to the GPS. Therefore my suspicion is that neither the Audio 15 or the Becker Map Module is broken, but somehow the Audio 15 is trying to use GPS from another source. Any ideas?