1) Turn the key to the "II" position, but do not start the car.
2)Wait 4 seconds.
3) Turn the key back to the "0" position.
4) Within the next 60 seconds, turn the key to the "III" position.
5) The immobilizer system should now be reset.
If the immobilizer system still does not work, you may need to have the vehicle diagnosed by a qualified mechanic.