1998 Buick Century Owner's Manual - Page 173

3. Turn the radio off. 4. Press the 1 and 4 buttons together. Hold them down until --- shows on the display. Next you will use the secret codenumber which you have written down. Unlocking the Theft-Deterrent Feature After a Power Loss Enter your secret code as follows;pause no more than 15 seconds between steps: 5 . Press MIN and 000 will appear on the display. 6. Press MIN again to make the last two digitsagree with your code. 1. LOC appears when the ignition is on. 2. Press MIN and 000 will appear on the display. 7. Press HRS to make the first one or two digits agree with your code. 8. Press AM-FM after you have confirmed that the code matches the secret codeyou have written down. The display will show REP to let know that you you need to repeat Steps5 through 7 to confirm your secret code. 3. Press MIN again to make the last two digits agree with your code. 4. Press HRS to make the first one ortwo digits agree with your code. 5. Press AM-FM after you have confirmed that the code matches the secret code you have written down. The display will show SEC, indicating the radio is now operable and secure. If you enter the wrongcode eight times,MOP will appear on the display. You will have to wait an hour with the ignition on before you can try again. When yout y again, r you will only have three more chances (eight tries per chance) to enter the correctcode before INOP appears. If you lose or forget your code, contact your dealer. 9. Press AM-FM and this time the display will show SEC to letyou know that your radio is secure. 3-31