Page 119 of 217

Climate control117
■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.
Air conditioning system
In addition to the heating and
ventilation system, the air
conditioning system has:
n=Cooling4=Air recirculationCooling n
Operated with the n button and is
functional only when the engine and
fan are running.
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,
switch the cooling system off to save
fuel.
Air recirculation system 4
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. 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.
Maximum cooling Briefly open the windows so that hot
air can disperse quickly.
■ Cooling n on.
■ Air circulation system 4 on,
■ Set air distribution control to M.
■ Set temperature control to coldest level.
■ Set fan speed to highest level.
■ Open all vents.
Demisting and defrosting the
windows ■ Cooling n on.
■ Set air distribution control to l.
■ Set temperature control to warmest
level.
■ Set fan speed to highest level.
■ Switch on heated rear window Ü.
Page 120 of 217

118Climate control
■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.
Automatic climate control
system
Controls for: ■ Air distribution
■ Temperature
■ Fan speed
n=Cooling4=Air recirculationV=Demisting and defrosting
Heated rear window Ü 3 42.
The preselected temperature is
automatically regulated. In the
automatic mode the fan speed
automatically regulates the air flow.
Automatic mode Basic setting for maximum comfort:
■ Set fan control to A.
■ Set the air distribution control to the
desired setting.
■ Preset temperature to the desired level.
■ Cooling n on.
■ Open all of the air vents.
Air distribution
L=to head area and foot wellM=to head areal=to windscreen and front door
windowsJ=to windscreen, front door
windows and foot wellK=to foot wellIntermediate settings are possible.
Temperature preselection
Set the temperature control to the
required position. Intermediate
settings are possible.
For reasons of comfort, change
temperature only in small increments.
At the end positions, there is no
temperature regulation. The air
conditioning system works with
maximum cooling or heating.
Heating will not be fully effective until
engine has reached normal operating temperature.
Fan speed In the automatic mode A the fan
speed automatically regulates the air
flow. If required the air flow can be
manually adjusted.
Cooling n
Operated with the n button and is
functional only when the engine and
fan are running.
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120Climate control
Heated rear window Ü 3 42.
The preselected temperature is
automatically regulated. In the
automatic mode the fan speed and air distribution automatically regulate the
air flow.
The system can be manually adapted by use of air distribution and air flow
controls.
Data is shown on the Info-Display.
Setting modifications are briefly
shown in the Info-Display,
superimposing over the currently
displayed menu.
The electronic climate control system
is only fully operational when the
engine is running.
Do not cover the sensor on the
instrument panel for correct
operation.
Automatic mode
Basic setting for maximum comfort:
■ Press AUTO button.
■ Open all air vents.
■ Air conditioning on.
■ Set desired temperature.
Temperature preselection Temperatures can be set to the
desired value.
For reasons of comfort, change
temperature only in small increments.
If the minimum temperature is set,
Lo appears in the display and the
electronic climate control system runs at maximum cooling.
If the maximum temperature is set,
Hi appears in the display and the
electronic climate control system runs
at maximum heating.Fan speed
The selected fan speed is indicated
with x and a 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.
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.
Page 125 of 217

Climate control123
Open slats and adjust direction of air
flow.
To close the vents, direct slats
downwards.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 intakes 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 outside
temperature is too low.
Service For optimal cooling performance, it isrecommended that the climate control
system be checked annually, 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 127 of 217
Driving and operating125Ignition switch positions0=Ignition off1=Steering wheel lock released,ignition off2=Ignition on, for diesel engine:
preheating3=StartingStarting the engine
Starting engine with ignition
switch
Operate clutch and brake, automatic
transmission in P or N.
Do not operate accelerator pedal.
Diesel engines: turn the key to
position 2 for preheating until control
indicator ! goes out.
Turn key briefly to position 3 and
release key when engine is running.
Before restarting or to switch off the engine, turn key back to 0.
Starting engine with the
Start/Stop button
The electronic key must be inside the
vehicle. Operate clutch and brake,
automatic transmission in P or N.
Do not operate accelerator pedal.
Diesel engines: press the button
briefly to start preheating, move the
steering wheel slightly to release the
steering wheel lock, wait until control
indicator ! goes out and then press
button for 1 second and release when
the engine is running.
Page 146 of 217

144Driving and operatingFuel
Fuel for petrol engines Only use unleaded fuel that complies
with European standard EN 228 or E DIN 51626-1 or equivalent.
Your engine is capable to run with
E10 fuel that fulfills these standards.
E10 fuel contains up to 10 %
bioethanol.
Use fuel with the recommended
octane rating 3 200. Use of fuel with
too low an octane rating can reduce
engine power and torque and slightly increases fuel consumption.Caution
Do not use fuel or fuel additives
that contain metallic compounds
such as manganese-based
additives. This may cause engine
damage.
Caution
Use of fuel that does not comply to EN 228 or E DIN 51626-1 or
equivalent can lead to deposits or
engine damage and may affect
your warranty.
Caution
Use of fuel with too low an octane
rating could lead to uncontrolled combustion and engine damage.
Fuel for diesel engines
Only use diesel fuel that complies
with EN 590.
In countries outside the European
Union use Euro-Diesel fuel with a
sulfur concentration below 50 ppm.
Caution
Use of fuel that does not comply to EN 590 or similar can lead to
engine powerloss, increased wear
or engine damage and may affect
your warranty.
Do not use marine diesel oils, heating
oils, Aquazole and similar diesel-
water emulsions. Diesel fuels must
not be diluted with fuels for petrol
engines.
Refuelling
Page 169 of 217
Vehicle care167
Fuse assignments inconjunction with load
compartment fuse box version ANo.Circuit1ABS2ABS3Interior fan electronic climate control4Interior fan heating and air
conditioning system5Radiator fan6Radiator fan7Central locking system8Windscreen washer, rear
window washer9Heated rear window, heated
exterior mirror10Diagnostics plug11InstrumentsNo.Circuit12Mobile telephone, Infotainment
system, display13Courtesy light14Windscreen wiper15Windscreen wiper16Horn, ABS, brake light switch,
air conditioning system17Diesel fuel filter or air condi‐
tioning system18Starter19–20Horn21Engine electronics22Engine electronics23Headlight range adjustment24Fuel pump25–26Engine electronics
Page 170 of 217

168Vehicle care
No.Circuit27Heating, air conditioning
system, air quality sensor28–29Power steering30Engine electronics31Rear window wiper32Brake light switch33Headlight range adjustment,
light switch, clutch switch,
instrument, driver's door
module34Steering column control unit35Infotainment system36Cigarette lighter, front power
outletFuse assignments in
conjunction with load
compartment fuse box version BNo.Circuit1ABS2ABS3Interior fan electronic climate control4Interior fan heating and air
conditioning system5Radiator fan6Radiator fan7Windscreen washer system8Horn9Headlight washer system10Emergency unlocking of central
locking system11–12–No.Circuit13Fog light14Windscreen wiper15Windscreen wiper16Control module electronics,
Open&Start system, ABS,
brake light switch17Diesel fuel filter heating18Starter19Transmission electronics20Air conditioning system21Engine electronics22Engine electronics23Adaptive forward lighting, head‐
light range adjustment24Fuel pump25Transmission electronics26Engine electronics27Power steering