The problems is I recently got a 03 350z touring but all sudden turned off and their was no lights or anything. Checked battery but dash doesn't turn on neither does the headlights. When I turn the key ignition their is also no response. Does anyone know how to fix this?

 

Try charging your battery first. If it doesn't hold the charge it could be bad, or your alternator might be toast, or your IPDM behind the battery is soaking wet.