I have a 2005 GL 1800 and had a previous Zumo that worked great. I have a new Zumo 595LM that I connected using the Aux in on the radio system. I'm running an EdSet with a passive mike. The Zumo will work great for about 30-45 minute increments and then I get a message that the headset has been unpluged. Which is not the case. I then have to turn the Zumo off and back on and everything then works....for the next increment of time which can be 5 minutes or 45 minutes. This is driving me crazy. I got from Ed at EdSet's the micro phone booster that adds power to the microphone and people can hear me on a phone call fine. I just hate that I loose the music from my phone that is blue toothed to the zumo as well as driving directs when I have a route. Any ideas how to solve this?