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161Air conditioning
Air conditioner user instructions
The interior cooling system only works when the engine is running and fan
is switched on.
The air conditioner operates most effectively with the windows and the elec-
tric sliding panoramic roof closed. However, if the vehicle has heated up af-
ter standing in the sun for some time, the air inside can be cooled more
quickly by opening the windows and the sliding electric panoramic sunroof
briefly.
Setting for conditions of optimal visibility
When the air conditioning is switched on, the temperature and the air hu-
midity in the vehicle interior drop. Hence, when the outside air humidity is
high, the windows do not mist over and comfort for the vehicle occupants is
improved:
Electronic manual air conditioning
● Switch off the air recirculation ⇒ page 162.
● Set the fan to the required setting.
● Turn the temperature control to the centre position.
● Open and direct all the air outlets in the dash panel ⇒ page 162.
● Turn the air distribution control to the required position.
With Climatronic
● Press the
AUTO
button.
● Set the temperature to +22 °C (+72 °F).
● Open and direct all the air outlets in the dash panel ⇒ page 162.
Climatronic: Switching the measuring units for temperature on the radio
display or the navigation system installed with the default settings
Switching the temperature indication from Celsius to Fahrenheit on the ra-
dio display or the navigation system is carried out in the menu on the in-
strument panel ⇒ page 67.
The cooling system does not switch on
If the air conditioning system cannot be switched on, this may be caused by
the following:
● The engine is not running.
● The fan is switched off.
● The air conditioning fuse is blown.
● The outside temperature is lower than approximately +3 °C (+38 °F).
● The air conditioner compressor has been temporarily switched off be-
cause the engine coolant temperature is too high.
● Another fault in the vehicle. Have the air conditioner checked by a speci-
alised workshop.
Things to note
If the humidity and temperature outside the vehicle are high, condensation
can drip off the vaporiser in the cooling system and form a pool underneath
the vehicle. This is normal and does not indicate a leak!
Note
After starting the engine, any residual humidity in the air conditioner could
mist over the windscreen. Switch on the defrost function as soon as possi-
ble to clear the windscreen of condensation.
Safety First Operating instructions Practical tips Technical Specifications
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