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.
Ford Focus Intake Manifold
Intake Manifold (View 1 of 3)
Item
Part Number
Description
1
14A464
Engine Oil Pressure (EOP) switch electrical connector (part of 12C508)
2
—
Wire harness retainer (part of 12C508)
3
14A464
Electronic throttle control ...