Activating/deactivating

in the ignition lock. Turn the SmartKey to position 2 in the ignition lock.
button. The indicator lamp in the To switch on: press the button lights up. Airflow and air button. The indicator lamp in the distribution are set to automatic mode. button lights up. Airflow and air distribution are set to automatic mode.
or
button. The indicator lamp in the Press the button goes out. The previously button. The indicator lamp in the selected settings come into effect again. button goes out. The previously selected settings come into effect again.
button. The indicator lamp in the To switch off: press the button lights up. button. The indicator lamp in the Activating/deactivating the cooling with air dehumidification function button lights up.

    See also:

    Problems with the seat ventilation
    The seat ventilation has switched off prematurely or cannot be switched on. The vehicle's electrical system voltage is too low because too many electrical consumers are switched on. Switch o ...

    Utility
    With all that power under the M-Class' hood, along with its sporty nature and comfortable cabin, it's easy to forget this is still an SUV. That means the M-Class better do a good job of hauling th ...

    Maximum loaded vehicle weight
    The maximum weight is the sum of the curb weight of the vehicle, the weight of the accessories, the total load limit and the weight of the optional equipment installed at the factory. ...