HeaterHeater  - For pleasant driving - Mitsubishi Lancer Owner's Manual - Mitsubishi Lancer

The heater can only be used while the engine is running.

See also:

Key lock-in prevention system
When the ignition switch is in the “LOCK” (PUSH OFF) position, if you close all the doors and the rear hatch with the keyless operation key left in the vehicle and you try to lock the doors ...

Electronic immobilizer (Antitheft starting system)
[For vehicles equipped with keyless operation system] For information on operations for vehicles equipped with the keyless operation system, refer to “Keyless operation system: Electronic immobi ...

Unlocking the doors and rear hatch
When you are carrying the keyless operation key, if you press the driver’s or front passenger’s door lock/unlock switch (A), or the rear hatch OPEN switch (B) within the operating range, all t ...