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 Multifunction Display
  Item Part Number Description 1 7804302 Instrument panel upper finish panel 2 W710147-S Front Display Interface Module (FDIM) screws (3 required) 3 — FDIM electrical connector (part of 14401) 4 14D008 FDIM ...