Arming the alarm
The system is armed as soon as the vehicle is locked and acts as a deterrent to unauthorised persons who attempt to open the doors, bonnet or luggage compartment, or remove the audio system.
The alarm sounds for 30 seconds if an unauthorised person opens a door, the luggage compartment or the bonnet. The hazard flasher lights will flash for five minutes.
Any attempt to start the engine without a valid key or to remove the audio system sounds the alarm again.
Automatic arming delayThe 20 seconds arming delay begins when the bonnet, luggage compartment and all doors are closed.

This system acts as a deterrent against unauthorised intrusion by sensing any movement within the vehicle.
Unauthorised entry into the vehicle’s interior will trigger the alarm in the same way as the anti-theft system.
The sensors are located in the interior lamp unit.
Convertible onlyThe interior sensors are automatically disabled if the convertible top is open.
All except Britain and IrelandThe interior sensing alarm is armed together with the double locking system.
Britain and Ireland onlyThe interior sensing alarm is armed together with the central locking system.
To deactivate the interior sensors:

Press the upper part of the switch next to the driver’s door handle.

Press the lower part of the switch next to the driver’s door handle.
Test yourself
A quick Ford Focus quiz: every answer comes with an explanation and a link to the manual page.