Unlimited Key Mode Programming

Enabling Unlimited Key Mode 

1. The customer must choose a 4-digit, non-0000 number that will be programmed to all of their vehicles. All customer vehicles need to use the same number. Valid digits are 0-9 plus the letters A-F.
NOTE: If the PID: UNLIMITED TRANSPONDER KEY ID is not available the 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 turning off the Unlimited Key Mode below.
2. Check the PID: UNLIMITED TRANSPONDER KEY ID and compare its value against the code chosen in Step  1.
3. Using the WDS or equivalent Tester, select PCM from the menu. Follow SECURITY ACCESS to obtain security access. See ANTI-THEFT SECURITY ACCESS  .
4. If the Unlimited Transponder Security Key PID was 0000, select Active Command: SET UNLIMITED TRANSPONDER KEY. Enter the 4-digit code chosen by the user.
5. Select: ENABLE UNLIMITED KEY MODE.
6. Select: IGNITION CODE ERASE.
7. Disconnect the WDS or equivalent Tester and turn the ignition OFF.
8. Program 2 ignition keys to enable the vehicle.
9. Program any additional keys using either KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT  or KEY PROGRAMMING USING TWO PROGRAMMED KEYS  .

Disabling Unlimited Key Mode 

10. Using the WDS or equivalent Tester, select PCM from the menu. Follow SECURITY ACCESS to obtain security access. See ANTI-THEFT SECURITY ACCESS  .
11. Select: DISABLE UNLIMITED KEY MODE.
12. Select: IGNITION KEY CODE ERASE.
13. Disconnect the WDS or equivalent Tester and turn the ignition OFF.
14. Program 2 keys to enable the vehicle.
15. Program any additional keys either. See KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT  or KEY PROGRAMMING USING TWO PROGRAMMED KEYS  .