Ok after trawling through menu's I found the Power off option. But I think my TOMTOM XL IQ is faulty as it won;t detect that the external power has come on and power on automatically like my Garmin ONE used to. For some bloody reason I have to hold the button for 3 seconds every time I start the engine . AHHHHH. And if I forget i don;t get the BEEP BEEP for the camera warnings.........