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.
2003 Ford Focus L4-2.3L VIN ZFACTORY OEM SERVICE PROCEDURE
Switch State Control
KEY PROGRAMMING SWITCH STATE CONTROL
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 by PATS PID SPARE KY.
1. Insert a programmed ignition key into the ignition lock cylinder and turn the ignition switch from the OFF position to the RUN position.
2. Select PCM from the diagnostic tool menu. Follow the anti-theft security access to obtain security access.
3. NOTE: The default setting on delivery of all new vehicles is {ENABLE}.
From the diagnostic tool menu: Toggle SPARE KEY PROGRAMMING SWITCH selection to desired setting.
(ENABLE} Spare Key Programming Procedure is accessible.
{DISABLE} Spare Key Programming Procedure is not accessible.
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 by PATS PID SPARE KY.
1. Insert a programmed ignition key into the ignition lock cylinder and turn the ignition switch from the OFF position to the RUN position.
2. Select PCM from the diagnostic tool menu. Follow the anti-theft security access to obtain security access.
3. NOTE: The default setting on delivery of all new vehicles is {ENABLE}.
From the diagnostic tool menu: Toggle SPARE KEY PROGRAMMING SWITCH selection to desired setting.
(ENABLE} Spare Key Programming Procedure is accessible.
{DISABLE} Spare Key Programming Procedure is not accessible.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.