Grand Marquis V8-4.6L Flex Fuel (2010)
Key: Testing and Inspection
Key Programming Using Two Programmed Keys
Key Programming Using Two Programmed Keys
NOTE: This procedure works only if 2 or more programmed ignition keys are available. If 2 programmed keys are not available, refer to Key
Programming Using Diagnostic Equipment See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Testing and
Inspection/Programming and Relearning/Key Programming Using Diagnostic Equipment.
NOTE: The PCM PID SPAREKEY must be enabled for this procedure to operate. If this PID is not enabled, refer to Key Programming Switch State
Control See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Testing and Inspection/Programming and Relearning/Key Programming
Switch State Control, then select SPAREKEY programming switch ENABLED. The PCM PID SPAREKEY is set to ENABLE when the vehicle is built.
NOTE: If the programming procedure is successful, the new key(s) start the vehicle and the anti-theft indicator proves-out for approximately 3 seconds.
If the programming procedure is not successful and the new key(s) does not start the engine, leave the key in the ON position for at least 3 seconds, then
turn the key off. Repeat the key programming procedure from Step 1. If the failure repeats, refer to Anti-Theft See: Accessories and Optional
Equipment/Antitheft and Alarm Systems/Testing and Inspection in the Diagnosis and Testing portion to review the DTCs and carry out the appropriate
pinpoint tests.
NOTE: A maximum of 8 Passive Anti-Theft System (PATS) keys can be programmed into the PCM during this programming procedure, but only if the
PID SPAREKEY is ENABLED.
NOTE: A minimum of 2 PATS keys must be programmed into the PCM before the vehicle starts.
NOTE: If the vehicle is in unlimited key mode, this spare key programming procedure still functions. Any 2 keys that can start the vehicle can be used
to program an additional unlimited key.
NOTE: If additional keys are to be programmed, and the remaining keys are with the customer, or are not available, instruct the customer to refer to the
Owner's Literature for instructions on programming the remaining keys. In this case, the PID SPAREKEY must be enabled.
NOTE: If the steps are not carried out as outlined, the programming procedure ends.
NOTE: Ignition keys must have a correct mechanical key cut for the vehicle and must be PATS encoded keys (contain a transponder).
NOTE: This procedure is not necessary if only the PATS transceiver was replaced. Replacement of the transceiver does not erase the PATS key codes
in the PCM.
1. Insert the first programmed PATS key into the ignition lock cylinder and turn the key from the OFF position to the ON position (maintain the key
in the ON position for a minimum of 3 seconds and less than 10 seconds).
2. Turn the first PATS key to the OFF position and remove the key from the ignition lock cylinder.
3. Within 5 seconds of turning the first key to the OFF position, insert the second programmed PATS key into the ignition lock cylinder and turn the
key from the OFF position to the ON position (maintain the key in the ON position for a minimum of 3 seconds and less than 10 seconds).
4. Turn the second PATS key to the OFF position and remove the key from the ignition lock cylinder.
5. Within 10 seconds of turning the second PATS key to the OFF position, insert the unprogrammed PATS key (the new key) into the ignition lock
cylinder and turn the key from the OFF position to the ON position (maintain the key in the ON position for a minimum of 3 seconds and less than
10 seconds). The new PATS key is now programmed.
6. If it is desired to program additional key(s) (only up to 8 keys total can be programmed into the PCM), repeat Steps 1 - 5 for each additional key
that needs to be programmed.
7. Start the vehicle with the new key(s).
