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 MANUALSFORD1999WINDSTAR BASE, VAN CARGO, 3.8 4REPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEDOOR LOCKSANTI-THEFT SYSTEMS - PASSIVEPROGRAMMINGSPARE KEY PROGRAMMING SWITCH

1999 Ford Windstar Base, Van Cargo, 3.8 4

Spare Key Programming Switch

1999 Ford Windstar Base, Van Cargo, 3.8 4SECTION Spare Key Programming Switch

NOTE: The spare key programming switch is a programmable switch which provides the capability to enable/disable the normal customer spare key programming procedure detailed in the owner's manual. This programmable switch is provided as a convenience for rental company fleets or other fleet purchasers who may not want the spare key programming procedure available to the vehicle driver. The spare key programming switch state can be viewed using instrument cluster PID SPARE_KY. Default setting on all new vehicles is ENABLE.

Insert a programmed ignition key into the ignition lock cylinder. Insert Ford Service Function (FSF) card into NGS tester. Turn ignition switch from OFF to RUN position. With NGS tester connected to vehicle, enter instrument cluster then select SECURITY ACCESS PROCEDURE. This procedure will take 10 minutes to perform. After the security access procedure has been completed, a new menu will be displayed with command options. The default setting on all new vehicles is ENABLE. Select SPARE KEY PROGRAMMING SWITCH. Set SPARE KEY PROGRAMMING SWITCH to ENABLE to allow keys to be programmed or DISABLE to make key programming not accessible.

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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.