See also:

ON
This is the normal operating position after the engine is started. ...

Illumination brightness control
Illumination brightness control The brightness of clock display, audio, air conditioner, information display and instrument panel illumination dims when the light switch is in the “” or “” ...

For AT models
This light flashes if the vehicle is driven with tires of different diameters fitted on its wheels or with the air pressure excessively low in any of its tires. ...