Unlimited Key Mode
SPARE KEY PROGRAMMING - UNLIMITED KEY MODESpecial Tool(s)
Special Tool(s):
Enabling Unlimited Key Mode
NOTE:
- Unlimited key mode is intended for use by those customers who need more than 8 keys for their vehicle.
- If unlimited key mode is enabled, a maximum of 4 IKT keys can be programmed to the vehicle for RKE functionality. If more keys are required, they should be standard PATS keys. If more than 4 IKT keys are programmed to the vehicle, the smart junction box (SJB) and the instrument cluster will set DTC B1138 (memory full) and only 4 IKT keys will have RKE functionality, however, all of them will start the vehicle, if programmed correctly.
- Before programming, the new key(s) must have the correct mechanical cut for the ignition lock cylinder.
- The unlimited key mode is set up by creating a special, unique unlimited transponder security key code and programming this key code into all of the vehicle keys so they contain the same key code.
1. The customer must choose an 8-digit number (except for 00000000 or 00000001) to be programmed to all of their vehicles. All customer vehicles need to use the same number. Valid digits are 0-9 and the letters A-F.
2. NOTE: If the PID UNL_KEY_ID is not available, unlimited key mode is turned on, and must be turned off before viewing the stored code. At this time, unlimited keys may be programmed to the vehicle. To view/change the stored code, follow the procedure for disabling the unlimited key mode below.
Monitor the PID UNL_KEY_ID and compare its value against the code chosen in Step 1. It should not be the same key code.
3. From the scan tool, follow the on-screen instructions to ENTER SECURITY ACCESS. For additional information, refer to Anti-Theft Security Access. Anti-Theft Security Access
4. Once in security access, select: "program unlimited key code" and press the tick mark. Enter the 8-digit code chosen by the customer in Step 1 of this procedure and press the tick mark.
5. Select: "unlimited key mode ON" and press the tick mark.
6. Select: "Ignition Key Code Erase" and press the tick mark.
7. Disconnect the scan tool and turn the ignition switch to OFF.
8. Insert the first PATS key into the ignition lock cylinder and turn the key to the ON position for 3 seconds (6 seconds if it is an IKT key).
9. Remove the first PATS key from the ignition lock cylinder.
10. Insert the next PATS key into the ignition lock cylinder and turn the key to the ON position for 3 seconds (6 seconds if it is an IKT key).
11. If it is desired to program additional key(s), refer to Key Programming Using Two Programmed Keys for each additional key that needs to be programmed. Using Two Programmed Keys
Disabling Unlimited Key Mode
NOTE: By disabling the unlimited key mode, the previous access code no longer operates the vehicle.
1. From the scan tool, follow the on-screen instructions to ENTER SECURITY ACCESS. For additional information, refer to Anti-Theft Security Access. Anti-Theft Security Access
2. Select: "unlimited key mode OFF" and press the tick mark.
3. Select: "Ignition Key Code Erase" and press the tick mark.
4. Disconnect the scan tool and turn the ignition switch to OFF.
5. Insert the first PATS key into the ignition lock cylinder and turn the key to the ON position for 3 seconds (6 seconds if it is an IKT key).
6. Remove the first PATS key from the ignition lock cylinder.
7. Insert the next PATS key into the ignition lock cylinder and turn the key to the ON position for 3 seconds (6 seconds if it is an IKT key).
8. NOTE: With the unlimited key mode turned off, a maximum of 8 keys can be programmed into the instrument cluster using the Key Programming Using Two Programmed Keys procedure. The PID SPAREKEY must be enabled.
If it is desired to program additional key(s), refer to Key Programming Using Two Programmed Keys for each additional key that needs to be programmed. The PID SPAREKEY must be enabled. Using Two Programmed Keys