Changing Customer's Code

The radio must be unlocked. No customer's code may be currently stored in the radio, in order to change the customer's code. The radio will display 1:00 when the radio is unlocked.

Press and hold pushbuttons 1 and 4 until the display changes, in order to determine whether or not there is a customer's code stored. There is a customer's code stored if SEC displays. There is no code stored if a series of dashes display.