Heated mirror
To demist or defrost the outside rear-view mirrors, press the rear window demister switch.
The indication lamp (A) will illuminate while the demister is on.
The heater will be turned off automatically in about 20 minutes.

See also:
Styling
Some people suggest that a car's performance is the most important part of
any review, but that's not the case with the new Lancer. This is one
sharp-looking sedan. Rarely do I test a sub-$20,000 ...
Changing the reset mode for average fuel consumption and average speed
The mode conditions for the average fuel consumption and average speed display
can be switched between “Auto reset” and “Manual reset”.
1. Press and hold the multi-information meter switch ...
Change of display mode (for vehicles with a MITSUBISHI genuine audio system)
Every time the “DISP” button is pressed lightly (less than 2 seconds), the display
can be changed.
Average fuel consumption Driving range Average speed
...
