gps antenna doesn't pick up signal!!,and left hid went out!!

[12master]

hello,thanks for looking,I just buy a 2003 350 z,and the navigation doesn't pickup any sattelite signal,the icon is always grey, anybody knows were the antenna location is and what can I do to check it? the car has tinted windshield,but is only at the top of it, is there any procedure to reset the sistem? also,lefth hid went out,what can I do to check it?? thanks

[TunerTrifecta]

Take 'er to the dealership before 08 when that factory warranty is up.