Thermotronic*
Thermotronic control panel
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Function
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Recommendation/information
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 Sets the airflow
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more
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 Controls the air conditioning automatically
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Switch on the automatic air conditioning. The indicator lamp in the button is lit.
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more
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 Activates/deactivates demisting for the windscreen
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Only use the demisting function until the misted-up windscreen is clear again.
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more
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 Increases the temperature, left-hand side
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It is best to set the temperature to 22 °C.
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more
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 Activates/deactivates Thermotronic
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Switch on THERMOTRONIC. The indicator lamp in the button is off.
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more
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Increases the temperature, right-hand side
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It is best to set the temperature to 22 °C.
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more
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 Switches the rear window heating on/off
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At very low temperatures, the rear window heating is only switched on once the vehicle interior has warmed up.
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more
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 Activates/deactivates the residual heat/auxiliary ventilation
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After you have turned the ignition off, you can use the residual heat to heat the vehicle interior, or you can ventilate the vehicle interior.
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more
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Setting the air distribution
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more
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 Switches cooling with dehumidification on/off
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Switch on cooling with dehumidification. The indicator lamp in the button is lit.
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more
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 Reduces the temperature, right-hand side
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It is best to set the temperature to 22 °C.
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more
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Display
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Reduces the temperature, left-hand side
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It is best to set the temperature to 22 °C.
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more
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 Activates/deactivates air-recirculation mode
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Only use this operating mode for a short time, e.g. in a tunnel. Otherwise, the windows can mist up due to lack of fresh air.
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more
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General notes
Thermotronic is only operational when the engine is running. Optimum operation is only achieved when you drive with the side windows and panorama louvred sliding sunroof* closed.
You can allow the air-conditioning system to adjust automatically or you can adjust it manually.
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Ventilate the vehicle for a brief period during warm weather, e.g. using the summer opening feature more. This helps you to achieve the desired interior temperature more quickly.
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The integrated filter filters out most particles of dust and completely filters out pollen.
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A clogged filter reduces the amount of air supplied to the vehicle interior. For this reason, you should always observe the interval for replacing the filter, which is specified in the Service Booklet. As it depends on environmental conditions, e.g. heavy air pollution, the interval may be slightly shorter than stated in the Service Booklet.
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 | Risk of accident |
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Follow the settings recommended on the following pages for heating or cooling. The windows could otherwise mist up. This may prevent you from observing the traffic conditions, thereby causing an accident.
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Activating/deactivating Thermotronic*
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Make sure that the key is in position 2 in the ignition lock.
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To activate: press the button.
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The indicator lamp in the button is off. The previously selected settings come into effect again.
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Press the button.
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The indicator lamp in the button is lit. Airflow and air distribution are set to automatic mode.
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To deactivate: press the button.
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The indicator lamp in the button is lit.
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When Thermotronic is deactivated, the air supply and air circulation are also switched off. Select this setting when you drive with the side windows or the panorama louvred sunroof* open, for example. Select this setting only briefly if the side windows and the panorama louvred sunroof* are closed, otherwise the windows may mist up.
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Controlling the air conditioning automatically
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If you switch the air conditioning to automatic mode, you will only rarely need to adjust the temperature, airflow or air distribution. The cooling with dehumidification function is switched on in automatic mode. If necessary, cooling with dehumidification can be deactivated.
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Make sure that the key is in position 2 in the ignition lock.
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Set the desired temperature.
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To activate: press the button.
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The indicator lamp in the button is lit. Airflow and air distribution are set to automatic mode.
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To deactivate: press the button.
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The indicator lamp in the button is off. Automatic air distribution and airflow are deactivated.
The setting for air distribution changes to  . The airflow is adjusted to the basic setting level.
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Setting the temperature
Different temperatures can be set for the driver's and front-passenger sides.
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To increase or reduce: press the or temperature button. Only change the temperature setting in small increments. Start at 22 °C.
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The temperature set is shown in the display.
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Setting the air distribution manually
You can also direct the airflow manually for the entire vehicle.
The symbols for the air distribution have the following meanings:
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Symbol
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Meaning
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Directs air through the demister vents to the windscreen and side windows
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Directs the airflow to the entire vehicle interior
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Directs the airflow to the footwell and through the side air vents
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Directs the airflow through the centre and side air vents
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To set the air distribution: turn thumbwheel to the appropriate symbol. The thumbwheel can also be turned to the area between two symbols.
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Setting the airflow manually
You can also set the airflow manually for the entire vehicle.
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To increase or reduce the airflow: turn thumbwheel clockwise or anti-clockwise.
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Demisting
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You should only select the demisting function until the windscreen is clear again.
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You can use the following settings to demist the windscreen, e.g. when it is covered with frost:
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To switch on: press the button.
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The indicator lamp in the button is lit. The display goes out.
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Cooling with dehumidification on
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High airflow
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High temperature
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Air distribution to the windscreen and front side windows
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Air-recirculation mode off
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Windows misted up
Windows misted up on the inside
You can use the following settings to demist the windscreen, e.g. when it is covered with frost:
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Activate automatic mode more.
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If the windows are still misted up:
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Activate the demisting function more.
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Windscreen misted up on the outside
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Switch on the windscreen wipers.
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Close the centre air vents.
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Turn air distribution thumbwheel to position or .
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You should only select this setting until the windscreen is clear again.
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Air-recirculation mode
You can deactivate the flow of fresh air if unpleasant odours are entering the vehicle from outside. No more fresh air will be taken in and the air inside the vehicle will be recirculated.
| Risk of accident |
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Only switch over to air-recirculation mode briefly if the outside temperature is low. Otherwise, the windows could mist up, thus impairing visibility and endangering yourself and others. This may prevent you from observing the traffic conditions, thereby causing an accident.
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To activate: briefly press the button.
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The indicator lamp in the button is lit.
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Air-recirculation mode is activated automatically at high outside temperatures. When air-recirculation mode is activated automatically, the indicator lamp in the button is not lit.
Outside air is added after about 30 minutes.
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To deactivate: press the button.
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The indicator lamp in the button is off.
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Air-recirculation mode switches off automatically:
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after approximately five minutes at outside temperatures below approximately 7 °C
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after approximately five minutes if the cooling with dehumidification function is deactivated
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after approximately 30 minutes at outside temperatures above approximately 5 °C
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Air-recirculation mode with convenience opening/closing feature*
| Risk of injury |
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Make sure that nobody can become trapped between the side window and the door frame as the side windows are opened and closed. Do not place objects or lean against the side window when it is being opened or closed. You or the objects could be drawn in or become trapped between the side window and the door frame as the window moves. If there is a risk of entrapment, release the button. If necessary, press the switch to stop, open or close the side window in the opposite direction.
Make sure that nobody can become trapped as the panorama louvred sliding sunroof* is opened and closed. If there is a risk of entrapment, release the button. If necessary, press the switch to stop, open or close the panorama louvred sliding sunroof* in the opposite direction.
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Convenience closing: press and hold the button for longer than two seconds and continue holding it until the side windows and the panorama louvred sunroof* are closed.
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The indicator lamp in the button is lit. Air-recirculation mode is activated.
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Convenience opening: press and hold the button again for longer than two seconds until the side windows have returned to their previous position.
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The indicator lamp in the button is off. Air-recirculation mode is deactivated. The panorama louvred sliding sunroof* moves to the ventilation position.
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If you open a side window or the panorama louvred sliding sunroof* manually after closing using the convenience closing feature, they will remain in this position when opened using the convenience opening feature.
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Residual heat/auxiliary ventilation
It is possible to make use of the residual heat of the engine to continue heating the stationary vehicle for up to 30 minutes after the engine has been switched off. The heating time depends on the coolant temperature and on the interior temperature that has been set.
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If you activate residual heat at high temperatures, only the ventilation is activated.
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The blower will run at a low speed regardless of the airflow setting.
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Make sure the key is in position 0 in the ignition lock or that it has been removed.
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To activate: press the button.
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The indicator lamp in the button is lit.
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To deactivate: press the button.
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The indicator lamp in the button is off.
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the ignition is switched on
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the battery voltage drops
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the coolant temperature is too low
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Cooling with air-dehumidification
| Risk of accident |
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If you deactivate the cooling function with air dehumidification, the vehicle will not be cooled in warm weather and the air will not be dehumidified. The windows could mist up more quickly. This may prevent you from observing the traffic conditions, thereby causing an accident.
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 | Environmental note |
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The cooling system uses the refrigerant R134A. This refrigerant does not damage the earth's ozone layer.
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Condensation may drip from the underside of the vehicle when Thermatic is in cooling mode.
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Cooling with dehumidification is operational when the engine is running, and cools according to the interior temperature selected. The air inside the vehicle is also dried, thereby preventing the windows from misting up.
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To activate: press the button.
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The indicator lamp in the button is lit. The cooling with dehumidification function is activated.
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To deactivate: press the button.
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The indicator lamp in the button is off. The cooling with dehumidification function has a delayed switch-off feature.
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Rear-compartment air conditioning
You can set the airflow and air direction individually using the rear-compartment air vents more.
You can set the temperature and blower speed using the front control panel more.
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The temperature of the air from the rear-compartment centre air vents is the same as the temperature of the air from the centre air vents on the dashboard.
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