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 MANUALSFORD2004MUSTANG BASE, 2D COUPE, 3.9 6, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1838 (ANTI-THEFT SYSTEM - PATS - (HYBRID))GENERAL PROCEDURESKEY PROGRAMMING SWITCH STATE CONTROLNOTES
2004 Ford Mustang Base, 2D Coupe, 3.9 6, Automatic
Key Programming Switch State Control: Notes
2004 Ford Mustang Base, 2D Coupe, 3.9 6, AutomaticSECTION Notes
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
Special Tools
| Illustration | Tool Name | Tool Number |
|---|---|---|
| Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool |
NOTE:
The spare key programming switch is a scan tool-programmable switch which provides the capability to enable/disable the customer spare key programming procedure. For additional information, refer to the Owner's Literature or Key Programming Using Two Programmed Keys . This programmable switch is provided as a convenience for customers who may not want the spare key programming procedure available to the vehicle driver.
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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.