Service Manual Pioneer AVIC-N4/
HOW TO BYPASS PASSWORD- PUT IN A NEW BATTERY IN MY TRUCK AND MY N4 WANTS A PASSWORD IT IS ASKING FOR (MY MOTHERS MAIDEN NAME) 
Posted Mar 10, 2009 · 22:51 UTC#1
PASSWORD AVIC N4
Posted Mar 10, 2009 · 23:12 UTC#2
Have to send it in with a proof of purchase to get it reset if you don't know the password
Posted Mar 10, 2009 · 23:22 UTC#3
How do you forget your mother's maiden name?
Posted Mar 11, 2009 · 00:05 UTC#4
Sounds like another person trying to get a stolen unit working I know my mothers maiden name. Pioneer won't reset the unit without proof of purchase.