Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Determining Factory Backup Unlocking Code For Secured Radio

UNLOCKING A LOCKED ("LOC") SYSTEM USING FACTORY CODE - TO BE USED ONLY IF A CUSTOMER CODE IS UNKNOWN
1. Turn ignition to "RUN" position.
2. Turn radio power switch Off.
3. Press and hold preset button 2 and 3 together until a four digit number appear on the radio display.
4. Record this number (it is the radio display code).
5. Call 1-800-537-5140 or 1-317-451-8965 (USA and Canada), using as touch-tone telephone.
6. After the computer prompt, enter your retailer code in the following manner:
^ Press "8" then press your account number, and then press the star key.
^ Example: If your account number is 12345, 812345* would be entered.
7. When advised, enter the four digit radio display code obtained in step 4, then press the star key. The computer will respond with the factory unlock code; record this number.
8. To unlock the radio, follow the steps for "Unlocking a Locked ("LOC") System Using a Known Code." Use the factory unlock code as the "known code."

"ERR9"
If any tampering is detected by the radio, the radio will display "ERR9", and the radio will be permanently locked. If the display cannot be cleared by removing and reconnecting all power, the radio must be returned to an authorized repair center for service.