The traffic conked out again, i.e. the TMC showed the green car on the top which means it's receiving, but the "Events Ahead" button was greyed out and there was no traffic displayed which is impossible in Toronto. The dealer suggested a "master reset"; no idea what that actually means. However, the TMC came back suddenly during the drive home from work. Very strange. But anyway, is there a way to perform a "master reset"?What are you trying to do? Reset it as in wipe out all personal info / stored addresses / previous destinations, etc?