The Theftlock® theft deterrent feature causes the radio to become inoperable if battery power is disconnected for more than 15 seconds when the unit is in the secured state. A code entry scheme is used to perform the following functions:

Use any number between 000-1999 as a security code.

Use the following sequence of operations in order to enable the theft deterrents:

1. Keep the battery and ignition voltages applied
2. Ensure that the radio is off.
3. Press the radio preset buttons 1 and 4 for 5 seconds.

Important: There are only 15 seconds allowed between the following steps.

4. Enter any key code using the HR or HRS and MN or MIN buttons. The initial key press of either button causes the display to indicate 000.
5. Press and hold the button MIN or MN until the last 2 digits of the code appear. The digits will also increment one by one with every momentary depression.
6. Press the HRS or the HR button until the first digit or digits of the code appear. The digits will increment one by one with each momentary depression.
7. Press the AM/FM button. The display will show REP for 5 seconds. Repeat the steps necessary in order to re-enter the code for verification.
8. Press the radio preset buttons 1 and 4 for 5 seconds.

Important: There are only 15 seconds allowed between the following steps.

9. Enter any key code using the HR or HRS and MN or MIN buttons. The initial key press of either button causes the display to indicate 000.
10. Press and hold the button MIN or MN until the last 2 digits of the code appear. The digits will also increment one by one with every momentary depression.
11. Press the AM/FM button. If the display shows SEC, the verification was successful and the system is in the secure state.

If the display shows - - -, the verification steps were not successful. Start the entire sequence from the beginning.

The display will revert to TOD after 15 seconds.

Use the following sequence of operations in order to disable the theft deterrent from the secure mode:

1. Apply the battery and ignition voltages.
2. Ensure that the radio off.
3. Press the radio preset buttons 1 and 4 for 5 seconds. The display will show SEC, indicating that the unit is in the secure mode.
4. Enter the correct code number using the HR or HRS and MN or MIN buttons. The initial key press of either button causes the display to indicate 000.
5. Press and hold the MIN or MN button until the last 2 digits of the code appear. The digits will increment one by one with every momentary depression.
6. Press the HRS or the HR button until the first digit or digits of the code appear. The digits will increment one by one with each momentary depression.
7. Press the AM/FM button. If the display shows - - -, the verification was successful. The numbers match the user selected code or the factory backup code.

If the display shows SEC, the numbers did not match either of the codes, and the unit will remain in the secure state.

The display will revert to a secure state after 15 seconds.

If you remove the battery power, LOC will appear on the display when you reapply the power. Enter the security code in order to unlock the system.

1. Refer to Enabling Theftlock®.
2. Press the AM/FM after you are sure that the code is correct.
3. SEC should now appear on the display. The system is secure. You may now use the system.
4. After an initial 8 failed tries to unlock, the unit is in a second level LOCK condition and becomes inoperative for an hour. Any further code inputs during this hour cause the display to indicate INOP for 15 seconds before returning to LOC. The battery and ignition voltages must be present for an hour before the unit resets to the LOC condition. The unit then times out for an hour after every successive 3 incorrect entries.