Heating, Ventilation and Air conditioning 182
Some Climatronic controls may also be on the climate control system control 
panel located in the rear centre console. These controls are used to make the 
appropriate settings for the rear seats.
Control 
button Additional information. Climatic  Ÿpage 181, fig. 129; Cli-
matronic  Ÿpage 181, fig. 130. 
 Tem-
perature
 ˆ ...  ˆ
Climatic: rotate the control to adjust the temperature accord-
ingly.
Climatronic: the settings for the left hand side, the right-hand 
side and the rear seats are made separately. Rotate the control 
to adjust the temperature accordingly. The temperature is indi-
cated on the outside ring.
 Fan
  ...  –
Climatic: setting 0, fan and Climatic switched off;
setting 4, fan set to maximum.
Climatronic: the Fan speed is automatically adjusted depend-
ing on the vehicle speed to avoid annoying noises. The fan can 
also be adjusted manually.
 Air dis-
tributionClimatic: rotate the continuous control to direct the airflow to 
the desired area.
Climatronic: manually adjustable using the controls.
 <
Climatic: defrost function. The airflow is directed at the wind-
screen. In this position, air recirculation is automatically 
switched off or is not switched on.
 <
Climatronic: defrost function. The air drawn in from outside the 
vehicle is directed at the windscreen and air recirculation is 
automatically switched off. To defrost the windscreen more 
quickly, the air is dehumidified at temperatures over approxi-
mately +1.5 °C (+35 °F) and the fan runs at maximum output.
 KThe air is directed at the chest of driver and passengers by the 
dashboard air vents.
 L– Air distribution towards the footwell.
A1
A2
A3
 qAir distribution towards the windscreen and the footwell.
ACClimatic, Climatronic: Press the button to turn off/on cooling.
 =
Heated rear window: this only works when the engine is run-
ning and switches off automatically after a maximum of 10 
minutes.
 Air recirculation mode  Ÿpage 185.
 oClimatronic: Automatic air recirculation  Ÿpage 185.
 pWindscreen heating: only works when the engine is running 
and switches off automatically after a few minutes.
 >Instant auxiliary heating on/off button  Ÿpage 187.
Switching 
off
OFFClimatic: turn the fan switch to setting 0.
Climatronic: press the   button or set the fan manually to 0. 
When the system switches off, the   button will light up.
REAR
Climatronic: press the   button to adjust the climate con-
trol for the rear seats from the front. The   button will light 
up when the function is switched on. The settings for the rear 
seats will be displayed. Press the button again to switch the 
function off or do not touch any other button for around 10 
seconds.
Control 
button Additional information. Climatic  Ÿpage 181, fig. 129; Cli-
matronic  Ÿpage 181, fig. 130. 
OFF
OFF
REAR
REST 
         
        
        Heating, Ventilation and Air conditioning 184
Switching the Climatronic temperature measuring unit
Press and hold the   and   buttons to switch the temperature display 
between Celsius and Fahrenheit.
Heat
The maximum heat output required to defrost windows quickly is only avail-
able when the engine has reached its normal running temperature.
The air conditioning system does not switch on
If the air conditioning system cannot be switched on, this may be caused by 
the following:
 xThe engine is not running.
 xThe fan is switched off.
 xThe climate control fuse has blown.
 xThe outside temperature is lower than approximately +3 °C (+38 °F).
 xThe climate control system compressor has been temporarily switched off 
because the engine coolant temperature is too high.
 xAnother fault in the vehicle. Have the climate control system checked by 
a qualified workshop.
Things to note
If the humidity and temperature outside the vehicle are high, condensation 
can drip off the evaporator in the cooling system and form a pool underneath 
the vehicle. This is normal and does not indicate a leak!
Dust and pollen filter
The dust and pollen filter with its activated charcoal cartridge serves as a 
barrier against impurities in the ambient air.
For the climate control system to work with maximum efficiency, the dust and 
pollen filter must be replaced at the intervals specified in the Maintenance 
Programme.If the filter loses efficiency prematurely due to use in areas with very high 
levels of air pollution, the filter must be changed more frequently than stated 
in the Service Schedule.
Note
The climate control system must left running for a few minutes to reach the 
set temperature in the vehicle interior.
Note
After starting it, any residual humidity in the climate control system could 
mist over the windscreen.
Note
The air from the vents flows through the passenger compartment and out 
through the outlets below the rear window. Do not cover these outlets with 
items of clothing or other objects.
ACAUTO