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 MANUALSLINCOLN2006TOWN CAR EXECUTIVE L, 4.6 VREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSANTI-THEFT SYSTEM - PATSGENERAL PROCEDURESKEY PROGRAMMING SWITCH STATE CONTROLUNLIMITED KEY MODE PROGRAMMINGDISABLING UNLIMITED KEY MODE
2006 Lincoln Town Car Executive L, 4.6 V
Disabling Unlimited Key Mode
2006 Lincoln Town Car Executive L, 4.6 VSECTION Disabling Unlimited Key Mode
- Using a diagnostic tool, select PCM from the menu. Follow SECURITY ACCESS to obtain security access. For additional information, refer to ANTI-THEFT SECURITY ACCESS in this article.
- Select: DISABLE UNLIMITED KEY MODE.
- Select: IGNITION KEY CODE ERASE.
- Disconnect the diagnostic tool and turn the ignition key to OFF.
- Program in 2 (or 3) keys to enable the vehicle by cycling the keys from OFF to RUN.
- Program any additional keys using either Key Programming Using Two Programmed Keys or Key Programming Using Diagnostic Equipment in this article.
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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.