150Climate controlDemisting and defrosting the
windows V
●
Press V. The LED in the button
illuminates to indicate activation.
● 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 V. To return to automatic
mode: press AUTO.
Setting of automatic rear window heating based on cool outside
temperatures can be changed in the
vehicle personalisation menu in the
Colour-Info-Display.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 118.
Vehicle personalisation 3 121.
Note
If V is pressed while the engine is
running, an Autostop will be inhibited
until V is pressed again.
If V is pressed while the engine is
in an Autostop, the engine will restart automatically.
Stop-start system 3 160.
Manual settings
Climate control system settings can
be manually adapted by using the air
distribution buttons and the fan speed controller as follows. Manual
changing of settings will deactivate
the automatic mode.Fan speed SZR
Touch ZS or R. The selected fan
speed is briefly indicated in the Info-
Display.
If the fan is switched off, the air
conditioning is also deactivated.
To return to automatic mode: Press
AUTO .
Climate control151Air distribution l, M , K
Press appropriate button for desired
adjustment. The LED in the button
illuminates to indicate activation.
l:to windscreen and front door
windowsM:to head area via adjustable air
ventsK:to foot well and windscreen
Combinations are possible.
Return to automatic air distribution:
press AUTO .
Cooling 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 climate control fan is switched on.
Press A/C again to switch off cooling.
The air conditioning system cools and
dehumidifies (dries) cabin air as
required. Therefore condensation
may form and is drained under the
vehicle.
If no cooling or drying is required,
switch off the cooling system for fuel
saving reasons.
System ON/OFF X
Cooling, fan and automatic mode can
be switched off by pressing X. When
the system is deactivated, the LED
extinguishes in button X.
Activate by pressing X or cooling
button A/C or automatic mode button
AUTO . The LED in the button
illuminates to indicate activation.
Manual air recirculation 4
Press 4 to activate air recirculation
mode. The LED in the button
illuminates to indicate activation.
152Climate controlSelect air recirculation to assist incooling the interior or in blocking
outside odours or exhaust. When
recirculation is selected, a partial
ventilation to refresh the interior air
will occur every 10 minutes.
Press 4 again to deactivate
recirculation mode.
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 l.
Automatic air recirculation An air humidity sensor automatically
switches the system to external air if
internal air humidity is too high.
Basic settings Some basic settings can be changed
in the vehicle personalisation menu in
the Colour-Info-Display.
Select the relevant settings in
Settings , I Vehicle in the Colour-Info-
Display.
Colour-Info-Display 3 118.Vehicle personalisation 3 121.
Auxiliary heater
Air heater Quickheat is an electric auxiliary air
heater which automatically warms up
the passenger compartment more
quickly.Air vents
Adjustable air vents Front air vents
To open the vent, turn the adjuster
wheel to B. Adjust the air amount at the
vent outlet by turning the adjuster
wheel.
Climate control153
Direct the flow of air by tilting and
swivelling the slats.
To close the vent, turn the adjuster
wheel to 7.
Rear air vents
Air vents for rear passenger are in the
centre console between the front
seats.
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 Cabin air filtration A particle filter cleans the cabin air
from dust, soot, pollen and spores.
154Climate controlActive carbon filter
In addition to the particle filter, the active carbon filter reduces odours.
Air conditioning regularoperation
In order to ensure continuously
efficient performance, it is
recommended that air conditioning
should be operated for a few minutes once a month, irrespective of the
weather and time of year.
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 checkNote
Refrigerant R-134a contains
fluorinated greenhouse gases.
162Driving and operating● The climate control systemallows an Autostop.
● The brake vacuum is sufficient.
● The self-cleaning function of the diesel particle filter is not active.
● The vehicle was driven at least at
walking speed since the last Autostop.
Otherwise an Autostop will be
inhibited.
Certain settings of the climate control
system may inhibit an Autostop. See
Climate control chapter for more
details 3 141.
Immediately after motorway driving,
an Autostop may be inhibited.
New vehicle running-in 3 156.
Vehicle 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 e.g. auxiliary electric heater
or heated rear window are disabled orswitched to a power saving mode.
The fan speed of the climate control
system is reduced to save power.
Restart of the engine by the driver
Depress the clutch pedal to restart the
engine.
The engine start is indicated by the
needle at the idle speed position in
the tachometer.
If the selector lever is shifted out of
neutral before depressing the clutch
first, control indicator - illuminates
or is shown as a symbol in the Driver Information Centre.
Control indicator - 3 106.
Restart of the engine by the stop-
start system
The selector lever must be in neutral to enable an automatic restart.
If one of the following conditions occurs during an Autostop, the
engine will be restarted automatically by the stop-start system:● The stop-start system is manually deactivated.
● The bonnet is opened.
● The driver's seat belt is unfastened and the driver's door
is opened.
● The engine temperature is too low.
● The charging level of the vehicle battery is below a defined level.
● The brake vacuum is not sufficient.
● The vehicle is driven at least at walking speed.
● The climate control system requests an engine start.
● The air conditioning is manually switched on.
If the bonnet is not fully closed, a warning message is displayed in the
Driver Information Centre.
If an electrical accessory, e.g. a
portable CD player, is connected to
the power outlet, a brief power drop during the restart might be noticeable.
320IndexAAccessories and vehicle modifications .......................... 227
Active emergency braking ..........196
Active head restraints ...................47
Adaptive cruise control .......110, 184
Adaptive forward lighting ...110, 133
AdBlue ................................ 108, 165
Adjustable air vents ...................152
Airbag and belt tensioners .........105
Airbag deactivation ..............63, 105
Airbag label................................... 58 Airbag system .............................. 58
Air conditioning regular operation ................................ 154
Air conditioning system .............. 141
Air intake .................................... 153
Air vents...................................... 152
All-wheel drive ........................... 173
Antilock brake system ................ 174
Antilock brake system (ABS) .....107
Anti-theft alarm system ................35
Anti-theft locking system .............. 34 Appearance care ........................272
Armrest ................................... 53, 54
Armrest storage ........................... 71
Ashtrays ....................................... 93 Automatic anti-dazzle ..................40
Automatic climate control system .................................... 143Automatic dimming ......................39
Automatic light control ...............130
Automatic locking ........................28
Automatic transmission .............168
Automatic transmission fluid .......230
Autostop ............................. 110, 160
Auxiliary heater ........................... 152
B
Baselevel display ........................111
Battery discharge protection ......140
Battery voltage ........................... 121
Belts.............................................. 55
BlueInjection ............................... 165
Bonnet ....................................... 228
Brake and clutch fluid .................276
Brake and clutch system ...........106
Brake assist ............................... 176
Brake fluid .................................. 233
Brakes ............................... 174, 233
Breakdown.................................. 268
Bulb replacement ....................... 236
C Capacities .................................. 294
Cargo management system ........77
Car Pass ...................................... 22
Catalytic converter .....................165
Central locking system ................25
Centre console lighting ..............139
Changing tyre and wheel size ...258
321Charging system ........................ 105
Child locks ................................... 29
Child restraint installation locations ................................... 66
Child restraints.............................. 64
Child restraint systems ................64
Climate control ............................. 16
Climate control systems .............141
Clock............................................. 90
Collision damage repair ..............316
Colour-Info-Display .....................118
Control indicators........................ 104
Control of the vehicle .................156
Controls ........................................ 86
Convex shape .............................. 38
Coolant and antifreeze ...............276
Cruise control ....................110, 181
Cupholders .................................. 70
Curtain airbag system .................. 62
Curve lighting.............................. 133
D Danger, Warnings and Cautions ...4
Daytime running lights ...............132
Declaration of conformity ............313
DEF ............................................ 165
Diesel exhaust fluid ....................165
Diesel fuel system bleeding .......235
Diesel particle filter .............108, 164
Door open .................................. 111Doors............................................ 30
Driver assistance systems ..........181
Driver Information Centre ...........111
Driving characteristics and towing tips .............................. 222
Driving hints ................................ 156
Dual automatic climate control system ..................................... 148
E Electric adjustment ......................38
Electrical system......................... 246
Electric parking brake .........106, 175
Electric parking brake fault .........106
Electronic driving programmes ..171
Electronic key system ...................23
Electronic Stability Control.......... 177
Electronic Stability Control and Traction Control system ..........108
Electronic Stability Control off..... 108
End-of-life vehicle recovery .......228
Engine compartment fuse box ...248
Engine coolant ........................... 231
Engine coolant temperature ......108
Engine coolant temperature gauge ..................................... 102
Engine data ............................... 284
Engine exhaust .......................... 164
Engine identification ...................280
Engine oil ................... 229, 276, 281Engine oil pressure ....................109
Entry lighting .............................. 139
Event data recorders ..................318
Exit lighting ................................ 139
Exterior care .............................. 272
Exterior light ............................... 110
Exterior lighting ....................13, 129
Exterior mirrors ............................. 38
F
Fault ........................................... 172
First aid ......................................... 81
First aid kit ................................... 81
Fixed air vents ........................... 153
Fog light ..................................... 110
Fog lights ................................... 241
Folding mirrors ............................. 38
Following distance ......................107
Following distance indication ......195
Forward collision alert................. 192
Front airbag system .....................61
Front fog lights ........................... 136
Front seats.................................... 48
Front storage ................................ 71
Front turn signal light ..................237
Fuel............................................. 214
Fuel consumption - CO 2-
Emissions ............................... 221
Fuel for diesel engines ..............215
Fuel for liquid gas operation .......215