Page 18 of 287
16In briefClimate control
Heated rear window
The heating is operated by pressing
è .
Heated rear window 3 44.
Heated windscreen 3 45.
Heated exterior mirrors
Depending on the version, heating is
operated by pressing è or m .
Heating works with the engine
running and is switched off
automatically after a short time.
Heated exterior mirrors 3 40.
Demisting and defrosting the
windows
Heating and ventilation system, air
conditioning system
● Set fan speed ý to highest level.
● Set temperature controller ñ to
warmest level.
● Switch on cooling A/C, if
required.
● Switch on heated rear window è.
● Open side air vents as required and direct them towards the doorwindows.
Page 19 of 287

In brief17Note
If the settings for demisting and
defrosting are selected, an
Autostop may 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 3 157.
Heating and ventilation system
3 139.
Air conditioning system 3 141.Electronic climate control system
● Press h. The LED in the button
illuminates to indicate activation.
● Air conditioning and automatic mode are automatically switched
on. The LED in the button A/C
illuminates, AUTO is shown in the
display.
● Temperature and air distribution are set automatically and the fan
runs at high speed.
● Switch on heated rear window è.
● Switch on heated windscreen
9 .
● To return to previous mode, press h again.
Note
If h is pressed while the engine is
running, an Autostop will be inhibited
until h is pressed again.
If h is pressed while the engine is
in an Autostop, the engine will restart automatically.
Electronic climate control system 3 143.
Page 27 of 287

Keys, doors and windows25
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
1. Remove the cover.
2. Extract the flat battery from its location.
3. Replace battery with a battery ofthe same type. Pay attention to
the installation position.
4. Clip the cover in place.
Fault
If the central locking cannot be
operated or the engine cannot be
started, the cause may be one of the
following:
● Fault in electronic key.
● Electronic key is out of reception range.
● The battery voltage is too low. ● Overload of the central locking system by operating at frequent
intervals, the power supply is
interrupted for a short time.
● Interference from higher-power radio waves from other sources.
To rectify the cause of the fault,
change the position of the electronic
key.
Manual unlocking 3 25.Central locking system
Unlocks and locks doors, load
compartment and fuel filler flap.
A pull on an interior door handle
unlocks and opens the respective
door.
Note
In the event of an accident in which
airbags or belt pretensioners are
deployed, the vehicle is
automatically unlocked.
Note
A short time after unlocking with the
remote control the doors are locked
automatically if no door has been
opened. A precondition is that the
setting is activated in the vehicle
personalisation 3 124.
Selective unlocking
Selective unlocking allows you to
unlock either the front doors and the
fuel filler flap or the sliding doors, the
rear doors / the tailgate. Selective
unlocking has to be configured.
Page 141 of 287

Climate control139Climate controlClimate control systems.............139
Heating and ventilation system 139
Air conditioning system ...........141
Electronic climate control system .................................... 143
Parking heater ......................... 147
Air vents ..................................... 149
Adjustable air vents .................149
Fixed air vents ......................... 150
Glovebox cooler ......................150
Maintenance .............................. 150
Air intake ................................. 150
Air conditioning regular
operation ................................ 151
Service .................................... 151Climate control systems
Heating and ventilation system
Controls for: ● temperature ñ
● air distribution w, x and y
● fan speed ý
● air recirculation q
● heated rear window è or heated
exterior mirrors m
Heated rear window è 3 44.
Heated exterior mirrors m 3 40.
Heated seats ß 3 52.
Temperature
Adjust the temperature by turning ñ
to the desired temperature.HI:warmLO:cold
Heating will not be fully effective until
the engine has reached normal
operating temperature.
Air distribution
w:to windscreen and front door
windowsx:to head area via adjustable air
ventsy:to foot well and windscreen
All combinations are possible.
Fan speed
Page 142 of 287

140Climate controlAdjust the air flow by turning ý to the
desired speed.clockwise:increaseanticklockwise:decrease
Air recirculation system q
Press q to activate air recirculation
mode. The LED in the button
illuminates to indicate activation.
Press q again to deactivate air
recirculation mode.
9 Warning
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 may mist
up from outside when cold air is
directed towards it. If windscreen
mists up from outside, activate
windscreen wiper and deactivate w.
Demisting and defrosting
● Press w: the air distribution is
directed towards the windscreen.
● Set temperature controller ñ to
warmest level.
● Set fan speed ý to highest level.
● Switch on heated rear window and exterior mirrors è or switch
on heated exterior mirrors m.
● Switch on heated windscreen ,.
● Open side air vents as required and direct them towards the doorwindows.
Heated rear window è 3 44.
Page 143 of 287

Climate control141Heated exterior mirrors m 3 40.
Heated windscreen 9 3 45.
Air conditioning system
Controls for: ● temperature ñ
● air distribution w, x and y
● fan speed ý
● cooling A/C
● air recirculation q
● heated rear window è or heated
exterior mirrors m
Heated rear window è 3 44.
Heated exterior mirrors m 3 40.
Temperature ñ
Adjust the temperature by turning ñ
to the desired temperature.HI:warmLO:cold
Heating will not be fully effective until
the engine has reached normal
operating temperature.
Air distribution w, x , y
w:to windscreen and front door
windowsx:to head area via adjustable air
ventsy:to foot well
All combinations are possible.
Fan speed ý
Adjust the air flow by turning ý to the
desired speed.
clockwise:increaseanticlockwise:decreaseCooling A/C
Press A/C to switch on cooling. The
LED in the button illuminates to
indicate activation. Cooling is only
functional when the engine is running and fan is switched on.
Press A/C 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.
Page 144 of 287

142Climate controlActivated cooling may inhibit
Autostops. Stop-start system 3 157.
Air recirculation system q
Press q to activate air recirculation
mode. The LED in the button
illuminates to indicate activation.
Press q again to deactivate air
recirculation mode.
9 Warning
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 may mist
up from outside when cold air is
directed towards it. If windscreen
mists up from outside, activate
windscreen wiper and deactivate w.
Maximum cooling
Briefly open the windows so that hot
air can disperse quickly.
● Switch on cooling A/C.
● Press q for air recirculation
system on.
● Press x for air distribution.
● Set temperature control ñ to
coldest level.
● Set fan speed ý to highest level.
● Open all vents.
Demisting and defrosting the
windows
● Set fan speed ý to highest level.
● Set temperature controller ñ to
warmest level.
Page 146 of 287
144Climate controlAutomatic mode AUTO
Basic setting for maximum comfort:● Press AUTO, the air distribution
and fan speed are regulated
automatically.
● Open all air vents to allow optimised air distribution in
automatic mode.
● Air conditioning must be activated for optimal cooling and
demisting. Press A/C to switch on
air conditioning. The LED in the
button indicates activation.
● Set the preselected temperatures for driver and front
passenger using the left and right rotary ring. Recommended
temperature is 22 °C.
Press successively AUTO to select
the desired automatic settings:
● Soft Auto for a soft and silent air
distribution.
● Auto for thermal comfort and
silent air distribution.
● Auto Fast for a dynamic and
efficient air distribution.
Manual settings Climate control system settings can
be changed by activating the
following functions:Fan speed rs
Press r to increase or s to
decrease the air flow.
To return to automatic mode, press
AUTO .