Lamps (room lamps, etc.) auto-cutout function (Vehicles with keyless entry system or keyless operation system)Lamps (room lamps, etc.) auto-cutout function (Vehicles with keyless entry system 
or keyless operation system)  - Interior lamps - For pleasant driving - Mitsubishi Lancer Owner's Manual - Mitsubishi Lancer

If any of the interior lamps are left switched on with the ignition switch in any position other than “ON” or “ACC”, it goes off automatically after approximately 30 minutes.

The lamp goes on again if the ignition switch is turned to the “ON” or “ACC” position, any door or the rear hatch is opened and closed, or the keyless entry remote control or the keyless operation system is operated.

► The interior lamps auto-cutout function can be deactivated. The time until Note

► The interior lamps auto-cutout function can be deactivated. The time until the lamps automatically go off can be adjusted. For details, please consult a MITSUBISHI MOTORS Authorized Service Point.

If the vehicle is equipped with the MITSUBISHI Multi-Communication System (MMCS), adjustment can be made using screen operations. Refer to the separate owner’s manual for details.

    See also:

    Other interrupt displays (when the ignition switch is “ON”)
    The operation status of each system is displayed on the information screen. Refer to the appropriate page for the system for further details. This informs you that a periodic inspection is due. ...

    Rear seat
    WARNING • When a person sits in the rear seat, pull up the head restraint to a height at which it locks in position. Be sure to make this adjustment before starting to drive. Serious injuries ...

    Waiting
    For short waiting periods, such as at traffic signals, the gearshift lever can be left in position and the vehicle held stationary with the service brake. For longer waiting periods with the engine ...