Switching the hot-water auxiliary heater on/off with the button
DANGER Risk of fatal injury due to poisonous exhaust gases
If the tailpipe is blocked or sufficient ventilation is not possible, poisonous exhaust gases such as carbon monoxide may enter the vehicle. This is the case in enclosed spaces or if the vehicle gets stuck in snow, for example.
Always switch the stationary heater off in enclosed spaces without an air extraction systems, e.g. in garages.
Keep the tailpipe and the area around the vehicle free from snow when the engine or the stationary heater are running.
Open a window on the windward side of the vehicle to ensure an adequate supply of fresh air.
WARNING Risk of fire due to hot stationary heater components and exhaust gases
Flammable materials such as leaves, grass or twigs may ignite.
When the stationary heater is switched on, make sure that:
hot vehicle parts do not come into contact with flammable materials.
the exhaust gas can flow out of the stationary heater exhaust pipe unhindered.
the exhaust gas does not come into contact with flammable materials.
NOTE Battery discharge caused by stationary heater or stationary ventilation operation
Operating the stationary heater or stationary ventilation drains the battery.
After heating or ventilating the vehicle twice, drive for a longer period of time.
Requirements:
The fuel tank is filled above the reserve level.
The coloured indicator lamps above the 
rocker switch have the following meanings:
rocker switch have the following meanings: Blue – stationary ventilation is switched on
Red – the stationary heater is switched on
Yellow – a departure time is preselected
To switch on:
press the top or bottom section of rocker switch 
. The red or blue indicator lamp above rocker switch will light up.
The multimedia system will be activated for approximately one minute.
Set the desired temperature via the multimedia system.
To switch off:
press the top or bottom section of rocker switch again. The red or blue indicator lamp above rocker switch will go out.