Switching the seat ventilation on/off

See also:

Mercedes-Benz M-Class Owners Manual
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Digital speedometer
•► Press the button on the steering wheel to select the Trip menu. •► Press to select the digital speedometer. 1 Digital speedometer ...

Automatic locking feature
The vehicle locks automatically when the ignition is switched on and the wheels of the vehicle are turning at a speed of more than 9 mph (15 km/h). You could therefore be locked out when: • th ...