The engine immobiliser is armed automatically a short time after you have switched the ignition off.
The indicator in the instrument cluster will flash to confirm that the system is operating.
Coded keys
Disarming the engine immobiliserFord Focus Engine compartment overview - 1.8L Duratec-HE (MI4)/2.0L Duratec-HE (MI4)
A. Screen washer fluid reservoir*: See Washer fluid check.
B. Engine coolant reservoir*: See Engine coolant check.
C. Brake and clutch fluid reservoir (right-hand drive)*: See Brake and clutch
fluid check.
D. Engine oil filler cap*: See Engine oil check.
E. Brake and clutch fluid reservoir ( ...
Nissan Frontier - Instrument Panel - Keys - Brake system