F150 Key — How To Program 2003 Ford

Keep the new key in the position for several seconds. The security light on the dash will typically stay on for three seconds or the door locks will cycle to confirm success. Method: With Zero or One Working Key

If you only have one key or no keys at all, you use the onboard sequence. You have three alternatives: How To Program 2003 Ford F150 Key

Within 10 seconds, and turn it to RUN .