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 MANUALSFORD1999F 150 2WD PICKUP V6-4.2L VIN 2REPAIR AND DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTANTITHEFT AND ALARM SYSTEMSSERVICE AND REPAIRKEY PROGRAMMINGSPARE KEY PROGRAMMING SWITCH

1999 Ford F 150 2WD Pickup V6-4.2L VIN 2

Spare Key Programming Switch

1999 Ford F 150 2WD Pickup V6-4.2L VIN 2SECTION Spare Key Programming Switch

Special Tool(s)

NOTE
- The spare key programming switch is a New Generation STAR/Service Bay Diagnostic System (NGS/SBDS) programmable switch that provides the capability to enable/disable the spare key programming procedure. This procedure is in the Owners Guide spare key programming procedure or under Key Programming-Program a Key Using Two Programmed Keys. 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 by instrument cluster PID SPARE__KY.

1. Insert a programmed ignition key into the ignition lock cylinder and turn the ignition switch to RUN.
2. Enter NGS/SBDS. Follow the SECURITY ACCESS PROCEDURE. For additional information, refer to Security Access-Procedure to obtain security access.
3. From NGS/SBDS menu, select SPARE KEY PROGRAMMING SWITCH selection to the desired setting:

Spare key programming procedure is accessible.

Spare key programming procedure is not accessible.

NOTE: The default setting on delivery of all new vehicles is .

RENDER: 1.0x

NO RELATED

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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.