Disabling Unlimited Key Mode

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: By disabling the unlimited key mode, the previous access code no longer operates the vehicle.

From the scan tool, enter TOOLBOX. Select: BODY - SECURITY - PATS Functions and follow the Integrated Diagnostic System (IDS) on-screen instructions to ENTER SECURITY ACCESS. For additional information, refer to ANTI-THEFT SECURITY ACCESS .
Select: "unlimited key mode OFF" and follow the IDS on-screen instructions.
Select: "Ignition Key Code Erase" and follow the IDS on-screen instructions.
Disconnect the scan tool and turn the ignition switch to OFF (the key does not need to be removed at this time).
Turn the first PATS key in the ignition lock cylinder to the ON position for 3 seconds (6 seconds if it is an IKT key).
Turn the first PATS key to the OFF position and remove the key from the ignition lock cylinder.
Insert the second 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).
Start the vehicle with both PATS keys to verify their correct operation.

NOTE: With the unlimited key mode turned off, a maximum of 8 keys can be programmed into the IC using the KEY PROGRAMMING USING TWO PROGRAMMED KEYS . The IC PID SPAREKEY must be set to ENABLE.

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 IC PID SPAREKEY must be set to ENABLE.