CLK-Class Interactive Owner's Manual [In depth | Controls

Auxiliary heating/ventilation*

Activating or deactivating the auxiliary heating/ventilation

	Risk of poisoning
Exhaust fumes are produced when the auxiliary heating is in operation. Inhaling these exhaust fumes can be poisonous. You should therefore switch off the auxiliary heating in confined spaces without an extraction system, e.g. a garage.

	Risk of fire
When operating the auxiliary heating, parts of the vehicle may become very hot, and highly inflammable material such as fuels could be ignited. Operating the auxiliary heating is thus prohibited at filling stations or when your vehicle is being refuelled. You must therefore switch off the auxiliary heating at filling stations.

The auxiliary heating heats the air in the vehicle interior to the set temperature without using the heat of the running engine. As the auxiliary heating runs on the fuel in the fuel tank, the tank must be at least one quarter full for the auxiliary heating to work.

The auxiliary heating/ventilation automatically adjusts to changes in temperature and weather conditions. For this reason, the auxiliary heating could switch over from ventilation mode to heating mode or from heating mode to ventilation mode.

You cannot use the auxiliary ventilation to cool the vehicle interior to a lower temperature than the outside temperature.

Before activating

It is preferable to set the air conditioning to automatic mode.

The auxiliary heating/ventilation can be activated even when the air conditioning is being controlled manually. Optimum comfort can be obtained when the system is set to automatic mode.

Adjust the temperature.


Optimum comfort can be obtained by setting the temperature to 22 °C.

Activating or deactivating the auxiliary heating/ventilation

You can switch the auxiliary heating on or off by using the remote control or the auxiliary heating button on the centre console.

The on-board computer can be used to specify up to three switch-on times, one of which may be preselected more.

Button on the centre console

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Auxiliary heating/ventilation on/off

The indicator lamps in the button may light up in blue, red or yellow.

Blue	Auxiliary ventilation activated
Red	Auxiliary heating activated
Yellow	Switch-on time preselected more

Activating the auxiliary heating/ventilation

If the key is in position 1 or 2:

	Press and hold button for more than two seconds.
	The red or blue indicator lamp in the button is lit.

If the key is removed or in position 0:

	Briefly press button .
	The red or blue indicator lamp in the button is lit.

Deactivating the auxiliary heating/ventilation

	Briefly press button .
	The red or blue indicator lamp in the button is off.

Remote control

Your vehicle comes with one remote control. You may use two additional remote controls for your vehicle. For further information, consult a qualified specialist workshop, e.g. a Mercedes-Benz Service Centre.

The remote control has a maximum range of approximately 300 metres. The range may be reduced by:

sources of radio interference
solid objects between the remote control and the vehicle
the remote control being in an unfavourable position in relation to the vehicle
transmitting from an enclosed space


The optimum range can be achieved if you hold the remote control vertically pointing up when you press one of the buttons.


More information about the auxiliary heating can be found in the "Practical advice" section more.

Aerial

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OFF to deactivate auxiliary heating/ventilation

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ON to activate auxiliary heating/ventilation

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Indicator lamp

Activating the auxiliary heating/ventilation

	Press and hold the ON button until the indicator lamp in the remote control lights up in green.
	The red or the blue indicator lamp in the button on the centre console lights up.

Deactivating the auxiliary heating/ventilation

The auxiliary heating switches off automatically after 50 minutes. You can have this time changed. To do this, visit a qualified specialist workshop, e.g. a Mercedes-Benz Service Centre.

	Press and hold the OFF button until the indicator lamp in the remote control lights up in red.
	The red or the blue indicator lamp in the button on the centre console is not lit.