Erase All Key Codes

Worldwide Diagnostic System:

SPECIAL SERVICE TOOL(S)

NOTE:
^ This procedure is used when a customer needs ignition keys programmed into the system and does not have two programmed ignition keys available. This procedure is also useful when programmed key(s) have been lost and/or the ignition switch lock cylinder has been replaced, and it is desired to erase ignition key(s) from the Passive Anti-theft System (PATS) memory.
^ This procedure will erase all programmed ignition keys from the vehicle memory and the vehicle will not start until two ignition keys have been reprogrammed to the vehicle.
^ Two PATS encoded ignition keys with the correct mechanical cut must be available to perform this procedure. One or both keys may be the customer's original keys.
^ If additional ignition keys are to be programmed, refer to Key Programming Using Two Programmed Keys. If the remaining ignition keys are with the customer and are not available with the vehicle, then instruct the customer to refer to the owner's literature under the "Programming Spare [SecuriLock (R) (North America), Safeguard (R) (U.K.), or PATS for all other markets] Keys Procedure," for instructions on programming the remaining keys. Using Two Programmed Keys

1. Turn the ignition switch from the OFF to RUN position.
2. From scan tool: Follow the SECURITY ACCESS PROCEDURE to obtain security access.
3. From scan tool menu, select IGNITION KEY CODE ERASE.
4. Turn the ignition switch to the OFF position and disconnect the scan tool.

NOTE: DO NOT select any additional commands from this menu.

5. Insert the first encoded ignition key into the ignition switch lock cylinder and turn the ignition switch to the RUN position for three seconds.
6. Insert the second encoded ignition key into the ignition switch lock cylinder and turn the ignition switch to the RUN position for three seconds.
7. Start the engine with each ignition key.