hi guys i seen this 4000nex for sale. i want to pick it up ,but the  down side to unit its locked out . he claim it came in the car he brought and the previous owner put code . my question is 1 is there a way to remove code ? 2 has anyone done it successfully? 3 how much is this radio worth locked ?

You need to go into test mode and to do that you need the service file.