Mercedes-Benz CLK-Class Owner's Manual page 159

Controls in detail
Thermatic (automatic air conditioning)
Thermatic is only operational if the engine
is running. Optimum performance is only
guaranteed if you drive with the windows
and sliding/tilting sunroof* closed.
You can switch Thermatic off completely
as you require ( page 157).
You can allow the air conditioning to adjust
automatically ( page 157) or you can
control it manually ( page 159).
In automatic mode, Thermatic cools or
heats the vehicle interior depending on:
the temperature selected
outside temperature
sunlight
In automatic mode, you rarely need to alter
the temperature, airflow or air distribution.
The combination filter installed filters out
most dust particles and pollen completely.
156
i
The interval for replacing the filter depends
on environmental influences, such as high levels
of air pollution. The interval may be shorter than
that specified in the Service Booklet. A filter
reduces the quantity of air supplied to the vehi-
cle interior.
In warm weather, ventilate the vehicle
for a short time, e.g. using the summer
opening feature ( page 183).
This ensures that the desired interior
temperature is achieved more rapidly.
i
Observe the following instructions to ensure
that Thermatic functions correctly:
Keep the air inlet on the bonnet free from
deposits, e.g. ice or snow, to ensure the flow
of fresh air to the vehicle interior.
Make sure that the air vents and ventilation
grilles in the vehicle interior are always kept
clear.
G
Risk of accident
Follow the settings recommended on the fol-
lowing pages for heating or cooling. The win-
dows could otherwise mist up. As a result, you
may no longer be able to observe road and
traffic conditions and cause an accident.
i
Condensation may drip from the underside
of the vehicle when Thermatic is in cooling
mode.
H
Environmental note
The cooling system uses the refrigerant
R134A. This refrigerant does not damage
the earth's ozone layer.