See also:

Air inlet selection button
Air inlet selection button ON position (recirculation): Interior air is recirculated inside the vehicle. Push the air inlet selection button to the ON position. The indicator light will illuminate. ...

Winter driving
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When “CHECK DISC” is displayed
Press the eject button to unload the discs. Check that the disc is not damaged or scratched, and also check that the disc is inserted correctly. This message may appear when using some CD-RW discs. ...