The security alarm has four modesThe security alarm has four modes  - Security alarm system - Locking and unlocking - Mitsubishi Lancer Owner's Manual - Mitsubishi Lancer

See also:

ACD (Active centre differential system) control mode display screen
The ACD operation status is displayed. Refer to “ACD control mode switch”. ...

Setting the system
1. Turn the ignition switch to the “LOCK” position. Also, if a key was used to start the engine, remove the key from the ignition switch. 2. Get out of the vehicle. Close all doors and rear ha ...

Alarm activation
When the system is in the system armed mode, the alarm will be activated as follows if the vehicle is unlocked or if any of the doors, rear hatch or bonnet is opened using a method other than the ...