Using Two Programmed Keys

Key Programming Using Two Programmed Keys

NOTE: This procedure works only if 2 or more programmed ignition keys (they do not have to be Integrated Keyhead Transmitter (IKT) keys) are present. If 2 programmed Passive Anti-Theft System (PATS) keys are not available, refer to Key Programming Using Diagnostic Equipment Using Diagnostic Equipment.

NOTE: The Instrument Cluster (IC) PID SPAREKEY must be enabled for this procedure to operate. If this PID is not enabled, refer to Key Programming Switch State Control Switch State Control, in order to enable the customer spare key programming PID. The PID SPAREKEY is set to ENABLE when the vehicle is built.

NOTE: If the programming procedure is successful, the new key(s) starts the vehicle and the anti-theft indicator proves-out for approximately 3 seconds. If the programming procedure is not successful and the new key(s) does not start the engine, leave the key in the ON position for at least 3 seconds, then turn the key off. Repeat the key programming procedure from Step 1. If the failure repeats, refer to Anti-Theft in the Diagnosis and Testing to review the DTCs and carry out the appropriate pinpoint tests. Testing and Inspection

NOTE: A minimum of 2 PATS keys must be programmed into the IC before the vehicle starts.

NOTE: If additional keys are to be programmed, and the remaining keys are with the customer, or are not available, instruct the customer to refer to the Owner's Literature for instructions on programming the remaining keys. In this case, the IC PID SPAREKEY must be enabled.

NOTE: If the steps are not carried out as outlined, the programming procedure ends.

NOTE: Ignition keys must have a correct mechanical key cut for the vehicle and must be PATS-encoded keys (contain a transponder). The key does not have to be an IKT key.

NOTE: This procedure is not necessary if only the PATS transceiver was replaced. Replacement of the transceiver does not erase the PATS key codes in the IC.

NOTE: A maximum of 8 ignition keys can be programmed to a PATS vehicle, of which up to 4 can be IKTs (if equipped). If an attempt to program more than 4 IKTs occurs, the additional IKTs do not have any Remote Keyless Entry (RKE) function capability. The PATS portion of the additional key functions, but the RKE transmitter function cannot be programmed.

1. Insert a programmed ignition PATS key (can be an IKT or a standard PATS key) into the ignition lock cylinder and turn the key from the OFF position to the ON position.

2. Leave the key in the ON position for 3 seconds, but not longer than 10 seconds.

3. Turn the key to the OFF position and remove the first key.

4. Within 10 seconds of turning the key to the OFF position, insert a second programmed PATS ignition key (can be an IKT or a standard PATS key) into the ignition lock cylinder and turn the key from the OFF position to the ON position.

5. Leave the key in the ON position for 3 seconds, but not longer than 10 seconds.

6. Turn the key to the OFF position and remove the second key.

7. Within 20 seconds of turning the key to the OFF position, insert the unprogrammed PATS ignition key (new PATS or IKT key) into the ignition lock cylinder and turn the key from the OFF position to the ON position. Leave the key in the ON position for a minimum of 3 seconds.

8. NOTE: The new key now starts the vehicle.

Start the vehicle with the new key.

- If it is an IKT key, follow step 10 below to program the RKE transmitter portion of the IKT key.

9. If additional programmed keys are desired, repeat Steps 1-7.

10. To program the RKE transmitter portion of an IKT PATS key (if equipped), refer to Doors, Hood and Trunk &/or Locks.