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 Engine - Manual Transaxle - Removal
Special Tool(s) 2,200# Floor Crane, Fold Away 300-OTC1819E or equivalent Lifting Bracket, Engine 303-050 (T70P-6000) Powertrain Lift 300-OTC1585AE or equivalent Spreader Bar 303-D089 (D93P-6001-A3) o ...