Operation CHARM: Car repair manuals for everyone.

Unlimited Key Mode

KEY PROGRAMMING - UNLIMITED KEY MODE


Worldwide Diagnostic System (WDS):






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.

1. The customer must choose an 8-digit, non-00000000 or 00000001 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.


2. NOTE: If the PID: UNLIMITED TRANSPONDER 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 turning off Unlimited Key Mode below.

Check the PID: UNLIMITED TRANSPONDER KEY ID and compare its value against the code chosen in Step 1.

3. Using the diagnostic tool, select PCM from the menu. Follow SECURITY ACCESS to obtain security access.
4. If the Unlimited Transponder Security Key PID was 00000000 or 00000001, select Active Command: SET UNLIMITED TRANSPONDER KEY. Enter 8-digit code chosen by user.
5. Select: ENABLE UNLIMITED KEY MODE.
6. Select: IGNITION CODE ERASE.
7. Disconnect the diagnostic tool and turn the ignition OFF.
8. Program two ignition keys to enable the vehicle.
9. Program any additional keys using either Key Programming Using Two Programmed Keys or Key Programming Using Diagnostic Equipment.

Disabling Unlimited Key Mode

NOTE: By disabling the unlimited key mode with a random 8-digit number the previous access code will no longer operate the vehicle.

1. Using a diagnostic tool, select PCM from the menu. Follow SECURITY ACCESS to obtain security access.
2. Select: DISABLE UNLIMITED KEY MODE.
3. Select: PROGRAM UNLIMITED TRANSPONDER SECURITY KEY.
4. Enter an 8 digit random number (not 00000000 or 00000001).
5. Select: IGNITION KEY CODE ERASE.
6. Disconnect the diagnostic tool and turn the ignition key to OFF.
7. Program two keys to enable vehicle.
8. Program any additional keys using either Key Programming Using Two Programmed Keys or Key Programming Using Diagnostic Equipment.