Ok, it's got me here. Have luxury pack (hence premium sound), intermittently whilst driving with the radio switched on, LCD screen goes blank, sound is cut off and within about 1 to 2 seconds everything is back up and running (without me touching anything). Hence, LCD screen and audo cuts in and out (intermittently). Does anyone here have any ideas what is causing this and how I can reslove it or what check??? Thanks.