1996 Oldsmobile Achieva Owner's Manual - Page 143

Theft-Deterrent Feature Your system has this feature if it showsTHEFTLOCK" on its face. THEFTLOCK is designed to discourage theft of your radio. It works by using a secret code to disable all radio functionswhenever battery power is removed. The THEFTLOCK feature for the radio may be used or ignored. If ignored, thesystem plays normally and the radio is not protected by the feature. If THEFTLOCK is activated, your radiowill not operateif stolen. When THEFTLOCK is activated, the radiowill display LOC to indicate a locked condition anytime battery power is removed. If your battery loses power for any reason, you must unlock the radio the secret code with before it will operate. 1. Write down any three-digit number from 000 to 999 and keep it in a safeplace separate from the vehicle. 2. Turn the ignition to the ACCESSORY or RUN position. 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 code number which you have written down. 5. Press MN and 000 will appear on the display. 6. Press MN again to make the last two digits agree with your code. 7. Press HR to make the first digit agree with your code. Activating the Theft-Deterrent Feature The instructions which follow explainhow to enter your secret code to activate the THEFTLOCK system. It is recommended that you read throughall nine steps before starting the procedure. NOTE: If you allow more than 15 seconds to elapse between any steps, the radio automatically reverts to time and you must start theprocedure over at Step 4. 8. Press AM-FM after you have confirmed that the 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. 9. Press AM-FM and this time the display will show SEC to let you know that your radio is secure. 3-21