Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2006GRAND MARQUIS V8-4.6L VIN WREPAIR AND DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTANTITHEFT AND ALARM SYSTEMSTESTING AND INSPECTIONPROGRAMMING AND RELEARNINGKEY PROGRAMMINGUSING TWO PROGRAMMED KEYS
2006 Mercury Grand Marquis V8-4.6L VIN W
Using Two Programmed Keys
2006 Mercury Grand Marquis V8-4.6L VIN WSECTION Using Two Programmed Keys
KEY PROGRAMMING USING TWO PROGRAMMED KEYS
Special Tool(s)
NOTE:
- This procedure only works if 2 or more programmed ignition keys are available and it is necessary to program an additional key(s). If 2 keys are not available, follow the procedure in Key Programming Using Diagnostic Equipment.
- PID SPARE_KY must be enabled for this procedure to operate. If this PID is not enabled, follow the security access procedure in Anti-Theft Security Access and select SPARE KEY PROGRAMMING SWITCH: ENABLED.
- If the programming procedure is successful, the new key(s) starts the vehicle and the ANTI-THEFT INDICATOR illuminates for approximately 3 seconds and then turns off (prove-out).
- If the programming procedure is not successful, the new key(s) does not start the vehicle and the ANTI-THEFT INDICATOR flashes. If the programming procedure was not successful, leave the ignition switch in the RUN position for at least 30 seconds then repeat the key programming procedure from Step 1. If the failure repeats, refer to Diagnosis and Testing to review the diagnostic trouble codes (DTCs) and carry out pinpoint tests as necessary.
- A maximum of 8 ignition keys can be programmed to a passive anti-theft system (PATS) equipped vehicle. If more are needed, refer to Unlimited Key Mode in Key Programming. Switch State Control
- If the steps are not carried out as described, the programming procedure ends.
- Ignition keys must have the correct mechanical key cut for the vehicle and must be the correct PATS key part number for this model year.
- Model year 2002 and earlier are not equivalent keys.
- If the vehicle is in unlimited key mode, this spare programming procedure still functions. Any 2 keys that can start the vehicle may be used to program an additional unlimited key.
1. Insert the first programmed ignition key into the ignition lock cylinder and turn the ignition switch from OFF to RUN (maintain the ignition switch in RUN for 3 seconds but no more than 10 seconds).
2. Turn the ignition switch to OFF and remove the first key from the ignition lock cylinder.
3. Within 10 seconds of turning the ignition switch to OFF, insert the second programmed ignition key into the ignition lock cylinder and turn the ignition switch from OFF to RUN (maintain the ignition switch in RUN for 3 seconds but no more than 10 seconds).
4. Turn the ignition switch to OFF and remove the second key from the ignition lock cylinder.
5. Within 20 seconds of turning the ignition lock cylinder to OFF, insert the unprogrammed ignition key (new key) into the ignition lock cylinder and turn the ignition switch from OFF to RUN (attempt to start the vehicle).
6. If it is desired to program an additional key(s), repeat the key programming procedure from Step 1.
Special Tool(s):
Special Tool(s)
NOTE:
- This procedure only works if 2 or more programmed ignition keys are available and it is necessary to program an additional key(s). If 2 keys are not available, follow the procedure in Key Programming Using Diagnostic Equipment.
- PID SPARE_KY must be enabled for this procedure to operate. If this PID is not enabled, follow the security access procedure in Anti-Theft Security Access and select SPARE KEY PROGRAMMING SWITCH: ENABLED.
- If the programming procedure is successful, the new key(s) starts the vehicle and the ANTI-THEFT INDICATOR illuminates for approximately 3 seconds and then turns off (prove-out).
- If the programming procedure is not successful, the new key(s) does not start the vehicle and the ANTI-THEFT INDICATOR flashes. If the programming procedure was not successful, leave the ignition switch in the RUN position for at least 30 seconds then repeat the key programming procedure from Step 1. If the failure repeats, refer to Diagnosis and Testing to review the diagnostic trouble codes (DTCs) and carry out pinpoint tests as necessary.
- A maximum of 8 ignition keys can be programmed to a passive anti-theft system (PATS) equipped vehicle. If more are needed, refer to Unlimited Key Mode in Key Programming. Switch State Control
- If the steps are not carried out as described, the programming procedure ends.
- Ignition keys must have the correct mechanical key cut for the vehicle and must be the correct PATS key part number for this model year.
- Model year 2002 and earlier are not equivalent keys.
- If the vehicle is in unlimited key mode, this spare programming procedure still functions. Any 2 keys that can start the vehicle may be used to program an additional unlimited key.
1. Insert the first programmed ignition key into the ignition lock cylinder and turn the ignition switch from OFF to RUN (maintain the ignition switch in RUN for 3 seconds but no more than 10 seconds).
2. Turn the ignition switch to OFF and remove the first key from the ignition lock cylinder.
3. Within 10 seconds of turning the ignition switch to OFF, insert the second programmed ignition key into the ignition lock cylinder and turn the ignition switch from OFF to RUN (maintain the ignition switch in RUN for 3 seconds but no more than 10 seconds).
4. Turn the ignition switch to OFF and remove the second key from the ignition lock cylinder.
5. Within 20 seconds of turning the ignition lock cylinder to OFF, insert the unprogrammed ignition key (new key) into the ignition lock cylinder and turn the ignition switch from OFF to RUN (attempt to start the vehicle).
6. If it is desired to program an additional key(s), repeat the key programming procedure from Step 1.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.