Ford Focus Owners Manual: Principle of operation

Engine immobiliser

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Coded keys

Note: Do not shield your keys with metal objects. This may prevent the receiver from recognising your key as a valid one. Note: Have all of your remaining keys erased and recoded if you lose a key ...

More about Ford Focus:

Ford Focus Radiator Grille Opening Panel Reinforcement
  Item Part Number Description 1 N807389 Front bumper cover bracket-to-radiator support pin-type retainers (2 required) 2 17D958 LH/ 17D959 RH Front bumper cover brackets 3 8B041 Radiator grille opening panel reinforcement ...