Buick 1998 Century Owner's Manual page 173

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