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 Transaxle Description
The 4F27E is a fully automatic, electronically controlled 4-speed transaxle designed for Front Wheel Drive (FWD) vehicles. Its abbreviated designation 4F27E means: 4 — 4-speed transmission F — FWD 27 — originally designed for maximum input torque after torque converter: 365 N ...