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 Air Conditioning (A_C) Pressure Relief Valve
Material
Item
Specification
Motorcraft® PAG Refrigerant Compressor Oil
YN-12-D
WSH-M1C231-B
Item
Part Number
Description
1
19D644
A/C pressure relief valve
2
—
O-ring seal (part of 19D644)
R ...