Page 115 of 217
Climate control113
Demisting and defrosting the
windows V
■
Switch on cooling n.
■ 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 air distribution mode l is selected
while engine is running, an Autostop
will be inhibited until another air
distribution is selected.
If air distribution mode l is selected
while the engine is in an Autostop,
the engine will restart automatically.
Stop-start system 3 121.
Electronic climate control
systemControls for: ■ Fan speed
■ Temperature
■ Air distributionn=CoolingAUTO=Automatic mode4=Manual air recirculationV=Demisting and defrosting
Heated rear window Ü 3 29, Heated
seats ß 3 34, Heated steering wheel
* 3 70.
In Automatic mode temperature, fan
speed and air distribution are
regulated automatically.
Page 116 of 217

114Climate control
Climate control settings are shown onthe Graphic-Info-Display, or
depending on the version, on Colour- Info-Display. Setting modifications
are briefly popped-up in both
displays, superimposed over the
currently displayed menu.
The electronic climate control system
is only fully operational when the
engine is running.
Automatic mode AUTOBasic setting for maximum comfort: ■ Press AUTO button, the air
distribution and fan speed are
regulated automatically. Activation
is indicated by the LED in the
button.
■ Open all air vents to allow optimised air distribution in
automatic mode.
■ Press n to switch on optimal
cooling and demisting. Activation is indicated by the LED in the button.
■ Set the preselected temperature using the centre rotary knob.
Recommended temperature is
22 °C.
Temperature preselection
Set temperature by turning the centre
rotary knob to the desired value. It is
indicated in the display of the switch.
For reasons of comfort, change
temperature only in small increments.
If the minimum temperature Lo is set,
the climate control system runs at
maximum cooling, if cooling n is
switched on.
If the maximum temperature Hi is set,
the climate control system runs at
maximum heating.
Notice
If n is switched on, reducing the set
cabin temperature can cause the
engine to restart from an Autostop or
inhibit an Autostop.
Page 117 of 217

Climate control115
Demisting and defrosting the
windows V
■
Press button V. Activation is
indicated by the LED in the button.
■ Press button n for cooling.
Activation is indicated by the LED in
the button.
■ Temperature and air distribution are set automatically and the fan
runs at high speed.
■ Switch on heated rear window Ü.
■ To return to previous mode: press button V, to return to automatic
mode: press button AUTO.
Setting of automatic rear window
heating can be changed in the
Info-Display. Vehicle personalisation
3 98.
Notice
If the V button is pressed while the
engine is running, an Autostop will
be inhibited until the V button is
pressed again.
If the V button is pressed while the
engine is in an Autostop, the engine will restart automatically.
Stop-start system 3 121.
Manual settings Climate control system settings can
be changed by activating the buttons
and rotary knobs as follows.
Changing a setting will deactivate the
automatic mode.Fan speed Z
Turn left rotary knob to decrease or
increase fan speed. The fan speed is
indicated in the Info-Display.
Turning knob to $: fan and cooling
are switched off.
To return to automatic mode: Press AUTO button.
Page 118 of 217

116Climate control
Air distribution
Turn right rotary knob for desired
adjustment. Setting is indicated in the Info-Display.
K=to foot well9=to windscreen, front door
windows and foot wells=to windscreen and front door
windowsM=to head area via adjustable air
ventsL=to head area and foot well
Return to automatic air distribution:
press button AUTO.
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. When the cooling
system is switched off, no engine restart will be requested by the
climate control system during an
Autostop. Exception: defrost system
is activated and outside temperature
above 0° C requests a restart.
The status of cooling operation is
indicated in the Info-Display.
Activation or deactivation of cooling
operation after engine start can be
changed in the Info-Display. Vehicle
personalisation 3 98.
Page 120 of 217

118Climate control
Direct the flow of air by tilting and
swivelling the slats.
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 the
outside temperature is too low.
Service
For optimal cooling performance, it is recommended 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 121 of 217

Driving and operating119Driving and operatingDriving hints............................... 119
Starting and operating ...............119
Engine exhaust .......................... 124
Manual transmission ..................124
Brakes ........................................ 125
Ride control systems .................127
Driver assistance systems .........130
Fuel ............................................ 144Driving hints
Control of the vehicleNever coast with engine not
running (except during Autostop)
Many systems will not function in this
situation (e.g. brake servo unit, power steering). Driving in this manner is a
danger to yourself and others. All
systems function during an Autostop.
Stop-start system 3 121.
Idle boost If charging of the vehicle battery is
required due to battery condition, the
power output of the generator has to
be increased. This will be achieved by
an idle boost which may be audible.
On vehicles with Uplevel-Display, a
message appears in the Driver
Information Centre.
Pedals
To ensure the pedal travel is
uninhibited, there must be no mats in the area of the pedals.Starting and operating
New vehicle running-in Do not brake unnecessarily hard for
the first few journeys.
During the first drive, smoke may
occur because of wax and oil
evaporating off the exhaust system.
Park the vehicle in the open for a
while after the first drive and avoid
inhaling the fumes.
During the running-in period fuel and
engine oil consumption may be
higher. Autostop may be inhibited to
allow for charging the vehicle battery.
Page 122 of 217

120Driving and operatingIgnition switch positions0=Ignition off1=Steering wheel lock released,ignition off2=Ignition on3=Starting
Retained power off
The following electronic systems can
work until the driver's door is opened
or at the latest for 10 minutes after the
ignition is switched off:
■ Power windows
■ Power outlets
Power to the Infotainment system will continue to operate for 30 minutes oruntil the key is removed from the
ignition switch, regardless of whether
any door will be opened.
Starting the engine
Operate clutch.
Do not operate the accelerator pedal. Turn key briefly to position 3 and
release: an automatic procedure operates the starter after a brief
delay, until the engine is running. See
Automatic Starter Control.
Before restarting or to switch off the
engine, turn the key back to position
0 .
During an Autostop, the engine can
be started by depressing the clutch
pedal.
Starting the vehicle at low
temperatures
The start of the engine without
additional heaters is possible down to -30 °C . Required is an engine oil with
the correct viscosity, the correct fuel,
performed services and a sufficiently
charged vehicle battery.
Automatic Starter Control
This function controls the engine
starting procedure. The driver does
not have to hold the key in position 3.
Once applied, the system will go on starting automatically until the engine
is running. Because of the checking
procedure, the engine starts running
after a short delay.
Page 123 of 217

Driving and operating121
Possible reasons for a non-starting
engine:
■ Clutch pedal not operated
■ Timeout occurred
Turbo engine warm-up Upon start-up, engine available
torque may be limited for a short time, especially when the engine
temperature is cold. The limitation is
to allow the lubrication system to fully
protect the engine.
Overrun cut-off The fuel supply is automatically cut off
during overrun, i.e. when the vehicle
is driven with a gear engaged but accelerator is released.Stop-start system
The stop-start system helps to save
fuel and to reduce the exhaust
emissions. When conditions allow, it
switches off the engine as soon as the
vehicle is at a low speed or at a
standstill, e.g. at a traffic light or in a
traffic jam. It starts the engine
automatically as soon as the clutch is depressed. A vehicle battery sensor
ensures that an Autostop is only performed if the vehicle battery is
sufficiently charged for a restart.
Activation The stop-start system is available as
soon as the engine is started, the
vehicle starts-off and the conditions
as stated below in this section are
fulfilled.Deactivation
Deactivate the stop-start system
manually by pressing the eco button.
The deactivation is indicated when
the LED in the button extinguishes.
Autostop
If the vehicle is at a low speed or at a
standstill, activate an Autostop as
follows:
■ Depress the clutch pedal
■ set the lever in neutral
■ release the clutch pedal
The engine will be switched off while
the ignition stays on.