Disabling Unlimited Key Mode

WARNING: This page is about a different car, the 2010 Mercury Milan and 2010 Ford Fusion. 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 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.
Insert the first PATS key into the ignition lock cylinder and turn the key to the ON position for 3 seconds (6 seconds for an IKT key).
Remove the first PATS key from the ignition lock cylinder.
Insert the next PATS key into the ignition lock cylinder and turn the key to the ON position for 3 seconds (6 seconds for an IKT key).
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.
NOTE: With the unlimited key mode turned off, a maximum of 8 keys can be programmed into the IPC using KEY PROGRAMMING USING TWO PROGRAMMED KEYS procedure. The IPC PID SPAREKEY must be enabled.