How to Program a 2008 Ford Expedition Ignition Chip Key Transponder

Step by Step How to Programming Instructions:

Programming a new key without any working keys:
1. **Preferred Option**: Call a mobile Automotive Locksmith to come to your vehicle to originate a new key. They will connect a special computer to your vehicle to program the new key.
2. Tow your vehicle to a Dealership, and they will originate a new key. They will also connect a special computer to your vehicle to program the new key.

### Programming a second key if you have one working key:
1. Call or go to an Automotive Locksmith, and they will connect a special computer to your vehicle to program the second key.
2. Go to a Dealership, and they will also connect a special computer to your vehicle to program the second key.

### Programming a third key if you have two working keys:
Yes, once you have had the new key cut by a Locksmith, follow these instructions:
1. Insert an existing working key into the ignition cylinder.
2. Turn the ignition cylinder to ON (RUN) and back to OFF.
3. Remove the existing working key and, within five seconds, insert a second working key and turn it to ON (RUN) then back OFF.
4. Remove the second working key and insert the new key before ten seconds have elapsed and turn it to ON (RUN). Leave it on for one second and turn back to OFF.
5. The security light will light up for three seconds to indicate that the new key has been successfully programmed.

These instructions should help you program keys for your vehicle based on your situation. Let me know if you need further clarification!