Originally posted by Big Jim:
I doubt it. You will not be able to turn the ignition on with the old key or keys that still have the chip that the car recognizes.
yes the old keys will not turn the ignition because the cylinder should be for the new key but you can still program the new keys, just hold the key and sensor away from the new key in the ignition, worked for me and I did that right after SZ
- 95 Mystique LS - Zetec/5spd
- 99 Contour SeVT Sport - Duratec/5spd
Official NE-CEG Contour/Mustang Family
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