Mitsubishi LANCER Owner's Manual page 124

Door ajar prevention system
Type 1
Type 2
When the ignition switch is in the "LOCK (PUSH OFF)" posi-
tion, and someone tries to lock the vehicle by pressing the
driver's or front passenger's door lock/unlock switch while one
of the doors is not fully closed, the warning display is dis-
played and the buzzer sounds for about 3 seconds as a warning,
and the doors cannot be locked.
Ignition switch turn-off reminder system
N00560000104
Type 1
Type 2
When the ignition switch is in a position other than "LOCK
(PUSH OFF)", all the doors are closed, and someone tries to
lock the vehicle by pressing the driver's or front passenger's
door lock/unlock switch, the warning display is displayed and
the buzzer sounds for about 3 seconds as a warning, and the
doors cannot be locked.
Features and controls
N00560100105
3
3-29