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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 607 (Anti-Theft System - Passive Anti-Theft System (Pats), Without Intelligent Access (IA)) >> General Procedures >> Key Programming - Unlimited Key Mode >> Disable

Key Programming - Unlimited Key Mode: Disable

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

  1. 1.

    From the scan tool, enter TOOLBOX. Select Body>Security>PATS Functions and follow the IDS on-screen instructions to enter PATS security access.

  1. 2.

    Select "unlimited key mode OFF" and follow the IDS on-screen instructions.

  1. 3.

    Select "Ignition Key Code Erase" and follow the IDS on-screen instructions.

  1. 4.

    Turn the key to OFF and disconnect the scan tool (the key does not need to be removed at this time).

  1. 5.

    Turn the first PATS key to RUN for a minimum of 3 seconds.

  1. 6.

    Turn the first PATS key to OFF and remove the key from the ignition key cylinder.

  1. 7.

    Insert the second PATS key into the ignition key cylinder and turn the ignition key cylinder to RUN for a minimum of 3 seconds.

  1. 8.

    The engine should now start with either PATS key.

  1. 9.

    If it is desired to program additional key(s) (a total of 8 keys can be programmed into the BCM), REFER to Key Programming Using Two Programmed Keys .
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