I have both U-connect and the navigation system. When using the phone the system mutes the radio just fine but when I get a call the caller ID and the dialing through the navigation system doesn't work. The system was installed at the dealer and when I call the dealer they all play dumb. Is there a module that should be added? or a toggle switch needed to be switched? or was the unit not installed correctly? I'am just try to get it so you can look up a phone number on the navigation system and then dial the number.