See also:

REV indicator light (STI)
This light illuminates when the engine speed reaches a level set by driver or when the tachometer needle enters the red zone. ...

Rear differential oil temperature warning light (STI)
Reduce vehicle speed and park the vehicle in a safe place as soon as possible if the R.DIFF TEMP light illuminates. Continued driving with this light illuminated can damage the rear differential ...

System setup
You can select the following menus only by operating the “TUNE/TRACK/CH” dial. ...