To lock without using the keyTo lock without using the key  - Doors - Locking and unlocking - Mitsubishi Lancer Owner's Manual - Mitsubishi Lancer

Set the inside lock knob (1) to the locked position, and close the door (2).

Set the inside lock knob (1) to the locked position, and close the door (2).

► The driver’s door cannot be locked using the inside lock knob while the driver’s Note

► The driver’s door cannot be locked using the inside lock knob while the driver’s door is opened.

    See also:

    Retracting and extending the mirrors without using the mirror retractor switch
    [Vehicles with keyless entry system] The mirrors automatically retract or extend when the doors are locked or unlocked using the remote control switches of the keyless entry system. Refer to “Ke ...

    Vehicles with CVT
    ...

    Steering wheel lock
    [For vehicles equipped with keyless operation system] For information on operations for vehicles equipped with the keyless operation system, refer to “Keyless operation system: Steering wheel loc ...