This is for Becker radios. Not sure if its the same for the Alpines.

If an incorrect code is entered, the prompt “CODE” and the four stars are displayed again. If an incorrect code is entered three times in succession, the prompt “WAIT” is displayed and the radio is locked out for approximately 60 minutes. After three more subsequent incorrect entries, the radio is again locked out for approximately 60 minutes.

The lock out time will only count down if the radio switched on.

__________________
1985 Mercedes 190E 2.3(Sold)