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Important:: If eight unsuccessful tries are made to unlock the radio, the display will return to the LOC display, but when the SET button is pressed, INOP will be displayed. This means that the radio must be left powered up for one hour with the battery and the ignition applied before any more attempts to unlock the radio can be made. Anytime INOP is displayed, three more attemps will be allowed after the 1 hour waiting period with the battery and ignition applied.