Unknown switch in center console ...
I looked through the manual but I have no idea what this does.
I am sure it is something obvious but I can't work it out.
Can someone please enlighten me?

Setting the stowage compartment air vent
The stowage compartment can be ventilated, for instance to cool its contents, when the automatic air-conditioning system is activated. The level of airflow depends on the airflow and air distribution settings. The temperature of the air is approximately the same as that of the air flowing from the centre air vents.
Close the stowage compartment air vent when heating mode is activated and activate the "cooling with air dehumidification" function if the outside temperature is high. Otherwise, temperature-sensitive items stored in the stowage compartment could be damaged.
Stowage compartment air vent
To switch the ventilation on/off: push rocker switch down
or up
. http://www4.mercedes-benz.com/manual...html#d13e52826




