Keys, doors and windows21
Extend the key and open the unit.
Replace the battery (battery type
CR 2032), paying attention to the installation position. Close the unit
and synchronise.
Key with fixed key section
Have the battery replaced by a
workshop.
Radio remote control
synchronisation
After replacing the battery, unlock the
door with the key in the driver's door
lock. The radio remote control will be
synchronised when you switch on the
ignition.
Memorised settings Whenever the vehicle is locked, the
following settings are automatically
memorised by the key being used:
■ Electronic climate control,
■ Info-Display,
■ Infotainment system,
■ Instrument panel illumination.The saved settings are automatically
used the next time that key is used to
unlock the vehicle.
Central locking system Unlocks and locks doors, load
compartment and fuel filler flap.
A pull on an interior door handle
unlocks the entire vehicle and opens
the door.
Notice
In the event of an accident of a
certain severity, the vehicle unlocks
automatically.
Notice
A short time after unlocking with the
remote control the doors are locked
automatically if no door has been
opened.Unlocking
Central locking system with key
activation
Turn the key in the driver's door lock
to the front.
86Instruments and controlsInformation displaysTriple-Info-Display
Displays time, outside temperature
and date or Infotainment system
(when it is on).
When the ignition is off, the time, date and outside temperature can be
displayed by briefly pressing one of
the two buttons below the display.
Graphic-Info-Display,
Colour-Info-Display
Displays time, outside temperature,
date or Infotainment system (when it
is on) and electronic climate control
system.
The Colour-Info-Display displays the
information in colour.
The type of information and how it is
displayed depends on the equipment
of the vehicle and the settings made.
Selecting functions
Functions and settings of the
Infotainment system and electronic
climate control system are accessed via the display.
Selections are made via the menus
and buttons or the left adjuster wheel
of the steering wheel.
Selecting with the Infotainment
system buttons
Select menu items via the menus and
by using the Infotainment system
buttons. The OK button is used to
select the highlighted item or confirm
a command.
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.
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.
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.
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
Climate control111
In the Climate menu, select menu
item AC and activate or deactivate
cooling.
The air conditioning system cools and
dehumidifies (dries) when outside
temperature is above a specific level. Therefore condensation may form
and drip from under the vehicle.
If no cooling or drying is required,
deactivate AC to save fuel.
If no cooling or drying is required,
switch off the cooling system for fuel
saving reasons. Activated cooling
might inhibit Autostops.
Depending on the vehicle equipment, the display will indicate AC when
cooling is activated or Eco when the
cooling is deactivated.
On vehicles with stop-start system,
two settings for the operation of the
climate control system during an Autostop are available.
Select menu item ecoMode.
Select the desired setting: ■ Max AutoStop : In this mode the
electronic climate control is operated with focus on fuel
efficiency. The duration of an
Autostop is not limited.
■ AC Comfort : In this mode the
electronic climate control is
operated with focus on climate
condition. The duration of an
Autostop might be limited to
maintain the requested climate
condition.
Setting modifications are briefly
shown as pop-ups.
Selections are indicated by a o in
front of the menu item.
In either mode, an Autostop will be
available after the temperature in the
passenger compartment has
sufficiently cooled down.
Stop-start system 3 116.
Fan regulation in automatic
mode
Fan regulation in automatic mode can
be adapted.
Select menu item Automatic blower
from the Climate menu and select the
desired fan regulation.
Manual air recirculating mode
The manual air recirculating mode is
operated with the 4 button.
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.