See also:

Mercedes-Benz M-Class Owners Manual
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Interior
Up to four occupants can fit inside the CLS-Class. The instrument panel's central speedometer is flanked by a tachometer and clock. Black dials have chrome surrounds. Bar-chart displays show the f ...

Switching on/off
The three blue indicator lamps in the buttons indicate the ventilation level you have selected. If the battery voltage is too low, the seat ventilation may switch off. ► Make sure that ...