Thermotronic*
Control panel
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Function
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Page
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Air distribution, left
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more
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Demisting the windscreen
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more
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Increases the temperature, left-hand side
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more
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Display
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Increases the airflow
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more
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Increases the temperature, right-hand side
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more
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Rear window heating
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more
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Air distribution, right
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more
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Pollutant-sensitive air-recirculation mode on/off
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more
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Cooling with air dehumidification on/off
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more
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Residual heat/auxiliary ventilation on/off
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more
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Reduces the temperature, right-hand side
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more
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Reduces the airflow
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more
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Reduces the temperature, left-hand side
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more
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Air-recirculation mode
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more
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Thermotronic off/on
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more
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Controls the air conditioning automatically
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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 are driving with the windows and sliding/tilting sunroof* closed.
You can allow the air-conditioning system to adjust automatically or you can adjust it manually.
In automatic mode, Thermotronic cools or heats the vehicle interior according to:
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Ventilate the vehicle for a brief period during warm weather. This helps you to achieve the desired interior temperature more quickly.
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The integrated filter largely filters out particles of dust and completely filters out pollen.
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The interval for replacing the filter depends on environmental influences such as heavy air pollution. The interval may be shorter than that indicated in the Service Booklet. A clogged filter reduces the amount of air supplied to the vehicle interior.
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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 and deactivating Thermotronic
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To deactivate: press the button.
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The indicator lamp in the button comes on.
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Select this setting when you are driving with windows or the sliding/tilting sunroof* open, for example. When Thermotronic is deactivated, the air supply and air circulation are also switched off. Only select this setting briefly when the windows and the sliding/tilting sunroof* are closed, otherwise the windows may mist up.
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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 goes out. The previously selected settings come into effect again.
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or
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Press the button.
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The indicator lamp in the button comes on. Airflow and air distribution are controlled automatically.
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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 air 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 comes on. Airflow and air distribution are controlled automatically.
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To deactivate: press the button.
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The indicator lamp in the button goes out. Automatic air distribution and airflow are deactivated.
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Set the desired airflow.
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Set the desired air distribution.
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Setting the temperature
Different temperatures for the driver's and front-passenger side can be set.
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If you set the temperature for one side of the vehicle to the highest possible value, you will see HI in the display. This also increases the temperature on the other side of the vehicle at the same time.
If you set the temperature for one side of the vehicle to the lowest possible value, you will see LO in the display. This also reduces the temperature on the other side of the vehicle at the same time.
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Setting the air distribution manually
You can set a different air distribution for the driver's and front-passenger side manually.
The symbols on the thumbwheel 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 air to the entire vehicle interior
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Directs air to the footwell and through the side air vents
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Directs air through the centre, side and dashboard air vents
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Setting the airflow manually
You can also set the airflow manually for the entire vehicle.
Demisting the windscreen
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You should only select the demisting function until the windscreen is clear again.
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Do not make any other settings when the demisting function is activated.
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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 lights up.
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Cooling with air 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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To deactivate: press the button.
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The indicator lamp in the button goes out. The previously selected settings come into effect again. The cooling with air-dehumidification function remains on. Air-recirculation mode remains deactivated.
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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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You should only select the demisting function until the windscreen is clear again.
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Do not make any other settings when the demisting function is activated.
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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 the air distribution thumbwheel to the or symbol.
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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 smells 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 at low outside temperatures. 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 comes on.
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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 off.
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 goes out.
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Air-recirculation mode switches off automatically:
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after approximately five minutes at outside temperatures below approximately 5 °C
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after approximately five minutes if the cooling with air 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 the 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 danger threatens, release the
 button or operate the switch to move the side window in the opposite direction, to stop the side window or to open or close it again.
Make sure that nobody can become trapped when you are closing the sliding/tilting sunroof*. If danger threatens, release the
button or press the switch to open the sliding/tilting sunroof*.
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To activate/close: press and hold the button for longer than two seconds until the side windows and the sliding/tilting sunroof* are closed.
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The indicator lamp in the button comes on. Air-recirculation mode is activated.
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To deactivate/open: press and hold the button for longer than two seconds until the side windows and the sliding/tilting sunroof* have returned to their previous positions.
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The indicator lamp in the button goes out. Air-recirculation mode is deactivated.
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If you open a window or the sliding/tilting 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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Pollutant-sensitive air-recirculation mode
The filter reduces pollutants and odours from the outside air. Thermotronic switches to air-recirculation mode automatically if the pollutant-sensitive air-recirculation mode is activated and certain values for carbon monoxide and nitrogen oxide in the outside air are exceeded.
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The pollutant-sensitive air-recirculation mode cannot be activated if you have deactivated the cooling with air dehumidification function or the outside temperature has dropped below 5°C.
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To switch on: press the button.
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The indicator lamp in the button comes on. Pollutant-sensitive air-recirculation mode is activated.
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To deactivate: press the button.
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The indicator lamp in the button goes out. Pollutant-sensitive air-recirculation mode is deactivated.
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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 ventilation will be 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 has been removed.
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To activate: press the button.
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The indicator lamp in the button comes on.
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To deactivate: press the button.
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The indicator lamp in the button goes out.
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The residual heat/auxiliary ventilation is automatically deactivated after about 30 minutes, or when:
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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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The cooling function is operational when the engine is running and cools according to the interior temperature selected. The cooling also dries the air inside the vehicle and thereby effectively prevents the windows from misting up.
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To deactivate: press the button.
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The indicator lamp in the button goes out. The cooling function with air dehumidification has a delayed switch-off feature.
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To activate: press the button.
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The indicator lamp in the button comes on. The cooling with air-dehumidification function is activated.
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Rear-compartment air conditioning
You can set the airflow and air direction individually using the rear 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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