Page 108 of 231
106Climate controlClimate controlClimate control systems ............. 106
Air vents ..................................... 112
Maintenance .............................. 113Climate control systems
Heating and ventilation
system
Controls for: ■ Temperature
■ Fan speed
■ Air distribution
Heated rear window Ü 3 31.
Temperature
red=warmblue=coldHeating will not be fully effective until
engine has reached normal operating temperature.
Fan speed
Adjust the air flow by switching the fan to the desired speed.
Air distributionM=to head areaL=to head area and foot wellK=to foot wellJ=to windscreen, front door
windows and foot welll=to windscreen and front door
windows
Intermediate settings are possible.
Demisting and defrosting the windows ■ Set temperature control to warmest
level.
■ Set fan speed to highest level.
■ Set air distribution control to l.
■ Switch on heated rear window Ü.
Page 109 of 231
Climate control107
■Open side air vents as required and
direct them towards door windows.
■ For simultaneous warming of the foot well, set air distribution control
to J.
Notice
If the settings for demisting and
defrosting are selected, an Autostop
will be inhibited.
If the settings for demisting and
defrosting are selected while the
engine is in an Autostop, the engine
will restart automatically.
Stop-start system 3 116.Air conditioning system
In addition to the heating and
ventilation system, the air
conditioning system has:
n=cooling4=air recirculation
Heated seats ß 3 38, Heated
steering wheel * 3 71.
Cooling n
Press button n to switch on cooling.
Activation is indicated by the LED in
the button. Cooling is only functional
when the engine is running and
climate control fan is switched on.
Press button n again to switch off
cooling.
The air conditioning system cools and
dehumidifies (dries) as soon as the
outside temperature is slightly above
the freezing point. Therefore
condensation may form and drip from
under the vehicle.
If no cooling or drying is required,
switch off the cooling system for fuel
saving reasons. Activated cooling
might inhibit Autostops.
Notice
If the climate control is set to
maximal cooling while the ambient
temperature is high, an Autostop
may be inhibited until the requested
temperature in the passenger
compartment has been reached.
If the climate control is set to
maximal cooling while the engine is
in an Autostop, the engine may
restart automatically.
Stop-start system 3 116.
Page 110 of 231
108Climate control
Air recirculation system 4
The air recirculation mode is operated with the 4 button.9Warning
The exchange of fresh air is
reduced in air recirculation mode.
In operation without cooling the air humidity increases, so the
windows may mist up from inside.
The quality of the passenger
compartment air deteriorates,
which may cause the vehicle
occupants to feel drowsy.
Air distribution to l: Air recirculation
is deactivated.
In warm and very humid ambient air conditions, the windscreen might mist up from outside, when cold air is
directed to it. If windscreen mists up
from outside, activate windscreen
wiper and deactivate s.
Maximum cooling
Briefly open the windows so that hot air can disperse quickly.
■ Cooling n on.
■ Air circulation system 4 on.
■ Set temperature control to coldest level.
■ Set fan speed to highest level.
■ Set air distribution control to M.
■ Open all vents.
Demisting and defrosting the
windows
■ Cooling n on.
■ Set temperature control to warmest
level.
■ Set fan speed to highest level.
■ Set air distribution control to l.
■ Switch on heated rear window Ü.
■ Open side air vents as required and
direct them towards the door
windows.
Notice
If the settings for demisting and
defrosting are selected, an Autostop will be inhibited.
If the settings for demisting and
defrosting are selected while the
engine is in an Autostop, the engine will restart automatically.
Page 111 of 231
Climate control109Electronic climate control
system
Controls for: ■ Temperature
■ Air distribution and menu selection
■ Fan speed
AUTO=Automatic mode4=Air recirculatingV=Demisting and defrosting
Heated rear window Ü 3 31.
The preselected temperature is
automatically regulated. In automatic
mode, the fan speed and air
distribution automatically regulate the
air flow.
The system can be manually adapted with the air distribution and air flow
controls.
Data is shown on the Info-Display.
Setting modifications are briefly
shown in the Info-Display,
superimposed over the currently
displayed menu.
The electronic climate control system
is only fully operational when the
engine is running.
Automatic modeBasic setting for maximum comfort:
■ Press AUTO button.
■ Open all air vents.
■ Air conditioning on.
■ Set desired temperature.
Temperature preselection
Temperatures can be set to the
desired value.
For reasons of comfort, change
temperature only in small increments.
If the minimum temperature is set,Lo appears in the display and the
electronic climate control system runs
at maximum cooling.
If the maximum temperature is set,
Hi appears in the display and the
electronic climate control system runs
at maximum heating.
Page 112 of 231
110Climate control
Notice
If the temperature is set to Lo or Hi,
an Autostop will be inhibited.
If the temperature is set to Lo or Hi
while the engine is in an Autostop,
the engine will restart automatically.
Stop-start system 3 116.
Fan speed The selected fan speed is indicated
with x and the number in the display.
If the fan is switched off the air
conditioning is also deactivated.
To return to automatic mode: Press AUTO button.
Demisting and defrosting the
windows
Press the V button. V appears in
the display.
Temperature and air distribution are
set automatically and the fan runs at
a high speed.
To return to automatic mode: Press button V or AUTO .
Switch on heated rear window Ü.Notice
If the V button is pressed with fan
switched on while the engine is
running, an Autostop will be inhibited
until the V button is pressed again.
If the V button is pressed with fan
switched on while the engine is in an Autostop, the engine will restart
automatically.
Stop-start system 3 116.
Manual settings in climate menu Climate control system settings can
be changed via the centre control, the
buttons and the menus shown on the
display.
To view the menu, press the centre
control. The Climate menu appears in
the display.
Individual menu items are marked by
turning the centre control and
selected by pressing it.
To exit a menu, turn the centre control until Return or Main appear and
select.Air distribution
Turn the centre control. The Air
distribut. menu is activated, showing
the possible air distribution settings:Top=to windscreen and front
door windows.Centre=to vehicle occupants.Bottom=to foot well.
The Air distribut. menu can also be
called up via the Climate menu.
Return to automatic air distribution:
Deactivate corresponding setting or press button AUTO.
Cooling
Page 114 of 231
112Climate control9Warning
The exchange of fresh air is
reduced in air recirculation mode.
In operation without cooling the air humidity increases, so the
windows may mist up from inside.
The quality of the passenger
compartment air deteriorates,
which may cause the vehicle
occupants to feel drowsy.
In warm and very humid ambient air conditions, the windscreen might mist up from outside, when cold air is
directed to it. If windscreen mists up
from outside, activate windscreen
wiper and deactivate s.
Auxiliary heater Air heater
Quickheat is an electric auxiliary air
heater which automatically warms up
the passenger compartment more
quickly.
Coolant heater
Diesel-engined vehicles have a fuel-
powered auxiliary heater.Air vents
Adjustable air vents At least one air vent must be open
while cooling is on in order to prevent
the evaporator from icing up due to
lack of air movement.
Set the direction of the air flow by
turning the adjuster wheel from right to left and raise or lower the horizontal slats.
Page 115 of 231
Climate control113
To close the vent, turn the adjuster
wheel to left or right to its stop.
9 Warning
Do not attach any objects to the
slats of the air vents. Risk of
damage and injury in case of an
accident.
Fixed air vents
Additional air vents are located
beneath the windscreen and door windows and in the foot wells.
Maintenance
Air intake
The air intake in front of the
windscreen in the engine
compartment must be kept clear to
allow air intake. Remove any leaves,
dirt or snow.
Pollen filter
The pollen filter cleans dust, soot,
pollen and spores from the air
entering the vehicle through the air
intake.
Air conditioning regular
operation In order to ensure continuously
efficient performance, cooling must
be operated for a few minutes once a
month, irrespective of the weather
and time of year. Operation with
cooling is not possible when outside
temperature is too low.
Service For optimal cooling performance, it isrecommended to annually check the
climate control system, starting
three years after initial vehicle
registration, including:
■ Functionality and pressure test■ Heating functionality
■ Leakage check
■ Check of drive belts
■ Cleaning of condenser and evaporator drainage
■ Performance check
Page 119 of 231
Driving and operating117
An Autostop is indicated by the
needle at the AUTOSTOP position in
the tachometer.
During an Autostop, the heating
performance, power steering and
brake performance will be
maintained.
Conditions for an Autostop
The stop-start system checks if each
of the following conditions is fulfilled.
■ The stop-start system is not manually deactivated
■ the bonnet is fully closed
■ the driver's door is closed or the driver's seat belt is fastened
■ the battery is sufficiently chargedand in good condition
■ the engine is warmed up
■ the engine coolant temperature is not too high
■ the engine exhaust temperature is not too high, e.g. after driving with
high engine load
■ the ambient temperature is not too low
■ the defrosting function is not activated
■ the climate control system allows an Autostop
■ the brake vacuum is sufficient
■ the self-cleaning function of the diesel particle filter is not active
■ the vehicle has moved since the last Autostop
Otherwise an Autostop will be
inhibited.
An Autostop may become less
available as the ambient temperature
approaches the freezing point.Certain settings of the climate control
system may inhibit an Autostop. See
climate control chapter for more
details.
Immediately after motorway driving
an Autostop may be inhibited.
New vehicle running-in 3 115.
Battery discharge protection
To ensure reliable engine restarts,
several battery discharge protection
features are implemented as part of
the stop-start system.
Power saving measures
During an Autostop, several electrical
features such as rear window heating
are disabled or switched into a power saving mode. The fan speed of the
climate control system may be
reduced to save power.
Restart of the engine by the
driver
Depress the clutch pedal to restart the
engine.
