See also:

Engine starting
It is dangerous to let the engine run in a garage or other closed area. The engine consumes oxygen and gives off carbon dioxide, carbon monoxide and other poisonous fumes. Do not touch the high ...

Controls
(A): Air temperature knob (mixing hot and cold air); (B): Air recirculation on/off button; (C): Fan knob and climate control system on/off; (D): Air distribution knob. ...

Recirculation
Move slider (B) to . This function is particularly useful when the outside air is heavily polluted (in a traffic jam, tunnel, etc.). However, it is better not to use it for long periods, especial ...