I have a 2003 350z, and the driver side window won't go down. Any suggestions on what to do besides taking it to the dealer?

 

have you tried your fuses or the switch itself? (i know that this is more different than a nissan but) my dad had a 1978 Porsche 928 that the passenger window would not operate and we spent months trying to figure it out till i disassembled the switch cleaned it and re greased the track and it worked so like i said try the fuse first then relay (if you have one) and then switch then motor