130Climate controlIf 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.
Stop-start system 3 136.
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 3 106.Air recirculation mode 4
Press 4 to activate air recirculation
mode. The LED in the button
illuminates to indicate activation.
Press 4 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 s.
Basic settings
Some settings can be changed in the Info-Display. Vehicle personalisation
3 106.
Climate control131Air vents
Adjustable air vents At least one air vent must be open
while the cooling is on.
Adjust the air amount at the vent
outlet by turning the adjuster wheel.
The vent is closed when the adjuster wheel is turned close to the left or
right.
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.
132Climate controlAir conditioning regularoperation
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
Note
Refrigerant R-134a contains
fluorinated greenhouse gases.
Driving and operating137Deactivation
Deactivate the stop-start system
manually by pressing eco. The
deactivation is indicated when the
LED in the button extinguishes.
Autostop
Vehicles with manual transmission
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.Vehicles with manual transmission
automated
If the vehicle is at a standstill with the brake pedal depressed, Autostop is
activated automatically.
The engine will be switched off while
the ignition stays on.
The stop-start system will be disabled
on inclines of 15% or more.
Indication
An Autostop is indicated by control
indicator D.
During an Autostop, the heating 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 vehicle battery is sufficiently charged and 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 above -5 °C.
● 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 was driven at least at
walking speed since the last
Autostop.
138Driving and operatingOtherwise an Autostop will be
inhibited.
Certain settings of the climate control
system may inhibit an Autostop. See
'Climate control' chapter for further
information 3 126.
Immediately after motorway driving
an Autostop may be inhibited.
New vehicle running-in 3 134.
Vehicle battery discharge protection To ensure reliable engine restarts,
several vehicle battery discharge
protection features are implemented
as part of the stop-start system.
Power saving measures
During an Autostop, several electrical
features, e.g. the rear window
heating, are disabled or switched into a power saving mode. The fan speed
of the climate control system is
reduced to save power.
Restart of the engine by the driverVehicles with manual transmission
Depress the clutch pedal to restart the
engine.When the engine is restarted, control
indicator D in the Driver Information
Centre extinguishes.
If the selector lever is shifted out of
neutral before depressing the clutch
pedal first, control indicator -
illuminates or is shown as a symbol in
the Driver Information Centre.
Control indicator - 3 93.Vehicles with manual transmission
automated
Release the brake pedal or move
selector lever out of D to restart the
engine.
When the engine is restarted, control
indicator D in the Driver Information
Centre extinguishes.
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 restart might be noticeable.
262IndexAAccessories and vehicle modifications .......................... 191
Adjustable air vents ...................131
Airbag and belt tensioners ...........91
Airbag deactivation ................49, 92
Airbag label................................... 44 Airbag system .............................. 44
Air conditioning regular operation ................................ 132
Air conditioning system .............. 124
Air intake .................................... 131
Air vents...................................... 131
Antilock brake system ................ 149
Antilock brake system (ABS) .......93
Anti-theft alarm system ................28
Anti-theft locking system .............. 28
Appearance care ........................233
Ashtrays ....................................... 83
Automatic anti-dazzle ..................31
Automatic light control ...............114
Automatic locking ........................26
Automatic transmission .............141
Autostop ............................... 96, 136
B Battery discharge protection ......122
Battery voltage ........................... 105
Belts.............................................. 41
Bicycle rack .................................. 59Bonnet ....................................... 192
Brake and clutch fluid .................238
Brake and clutch system .............93
Brake assist ............................... 150
Brake fluid .................................. 196
Brakes ............................... 149, 196
Breakdown.................................. 231
Bulb replacement ....................... 199
C Capacities .................................. 252
Car Pass ...................................... 23
Catalytic converter .....................141
Central locking system ................24
Centre high-mounted brake light 206
Changing tyre and wheel size ...219
Charging system .......................... 92
Child locks ................................... 26
Child restraint installation locations ................................... 52
Child restraints.............................. 50
Child restraint systems ................50
Cigarette lighter ........................... 83
City mode ................................... 153
Climate control ............................. 17
Climate control systems .............123
Clock ............................................ 80
Code ........................................... 103
Collision damage repair ..............257
Colour-Info-Display .....................101
263Control indicators.......................... 88
Control of the vehicle .................134
Controls ........................................ 76
Convex shape .............................. 30
Coolant and antifreeze ...............238
Corner lighting ............................ 116
Cruise control ...................... 96, 154
Cupholders .................................. 57
Curtain airbag system .................. 49
D Danger, Warnings and Cautions ...4
Daytime running lights ...............116
Declaration of conformity ............255
Diesel fuel system bleeding .......198
Diesel particle filter ...............94, 140
Door open .................................... 96
Doors ............................................ 27
Driver assistance systems ..........154
Driver Information Centre .............97
Driving characteristics and towing tips .............................. 185
Driving hints ................................ 134
E Easy entry..................................... 39
Electric adjustment ......................30
Electrical system......................... 207
Electronic climate control system 126
Electronic driving programmes . ........................................ 143, 148Electronic Stability Control.......... 152
Electronic Stability Control and Traction Control system ............94
Electronic Stability Control off....... 94
End-of-life vehicle recovery .......192
Engine compartment fuse box ...208
Engine coolant ........................... 194
Engine coolant temperature gauge ....................................... 86
Engine data ............................... 245
Engine exhaust .......................... 140
Engine identification ...................241
Engine oil ................... 193, 238, 242
Engine oil pressure ......................95
Entry lighting .............................. 121
Event data recorders ..................259
Exit lighting ................................ 121
Exterior care .............................. 233
Exterior light ................................. 96
Exterior lighting ....................14, 113
Exterior mirrors ............................. 30
F
Fault ................................... 143, 148
First aid ......................................... 72
First aid kit ................................... 72
Fixed air vents ........................... 131
Flex-Fix system ............................ 59
Fog light ....................................... 96
Fog lights ................................... 202Folding mirrors ............................. 30
Following distance indication ......160
Forward collision alert................. 157
Front airbag system .....................47
Front fog lights ........................... 118
Front seats.................................... 37
Front storage ................................ 58
Front turn signal lights ...............203
Fuel............................................. 177
Fuel consumption - CO 2-
Emissions ............................... 184
Fuel for diesel engines ..............178
Fuel for liquid gas operation .......179
Fuel for petrol engines ...............177
Fuel gauge ................................... 85 Fuel selector ................................ 86
Fuses ......................................... 207
G Gauges ......................................... 83
Gear shifting ................................. 93
General information ...................185
Glovebox ..................................... 57
Graphic-Info-Display ...................102
H Halogen headlights ....................199
Hand brake ......................... 149, 150
Hazard warning flashers ............117
Headlight flash ........................... 115
Headlight range adjustment ......115