Climate control127Air vents
Adjustable air vents At least one air vent must be open
while cooling is on, in order to prevent
the evaporator from icing up due to
lack of air movement.9 Warning
Do not attach any objects to the
slats of the air vents. Risk of
damage and injury in case of an
accident.
Centre air vents
To open or close the centre air vents
and direct the flow of air, tilt the slats
up or down and turn the adjuster
wheel left or right.
Side air vents
To open or close the side air vents, tilt the slats up or down.
Direct the flow of air by rotating the
vents.
Depending upon the position of the
temperature control, air will be
directed into the vehicle via the side
air vents.
Rear air vents
Depending on vehicle, additional
adjustable air vents are located in the
rear passenger compartment.
Fixed air vents Additional air vents are located
beneath the windscreen and door
windows, in the foot wells and,
depending on vehicle, in the rear
passenger compartment.
Glovebox cooler
The air conditioning system can also
keep the contents of the glovebox
cool.
128Climate controlMaintenanceAir 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.
Note
Pollen filter is only fitted to vehicles
with air conditioning system.
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 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 with a
global warming potential of 1430.
Front air conditioning system is filled with 0.58 kg and has a CO 2
equivalent of 0.83 tonnes, the front
and rear air conditioning system is filled with 0.88 kg and has a CO 2
equivalent of 1.26 tonnes.Depending on vehicle, information
regarding air conditioning refrigerant
appears on a label located in the
engine compartment.
Driving and operating129Driving and
operatingDriving hints ............................... 129
Driving economically ...............129
Control of the vehicle ...............130
Steering ................................... 130
Starting and operating ...............131
New vehicle running-in ............131
Ignition switch positions ...........131
Power button ........................... 131
Starting the engine ..................133
Idle speed control ....................134
Vehicle shutdown ....................134
Overrun cut-off ........................ 135
Stop-start system ....................135
Parking .................................... 138
Engine exhaust .......................... 138
Diesel particle filter ..................138
Catalytic converter ...................139
AdBlue ..................................... 139
Manual transmission ..................145
Brakes ........................................ 146
Antilock brake system .............146
Parking brake .......................... 147Brake assist............................. 147
Hill start assist ......................... 147
Ride control systems .................148
Traction Control system ..........148
Electronic stability program .....149
Driver assistance systems .........150
Cruise control .......................... 150
Speed limiter ........................... 153
Parking assist .......................... 154
Rear view camera ...................156
Fuel ............................................ 158
Fuel for diesel engines ............158
Refuelling ................................ 158
Fuel consumption - CO 2-
Emissions ............................... 160
Trailer hitch ................................ 160
General information .................160
Driving characteristics and towing tips .............................. 160
Trailer towing ........................... 161
Trailer stability assist ...............161Driving hints
Driving economically
ECO mode ECO mode is a function that
optimises fuel consumption. It affects
engine power and torque,
acceleration, gear shift indication,
heating, air conditioning and electrical consumers.
Activation
Press ECO. Control indicator ECO
illuminates in the instrument cluster when activated.
Vehicle care171● See the Owner's Manual forfurther information.
● Explosive gas may be present in the vicinity of the battery.
Additional battery
Depending on the vehicle's auxiliary
equipment, certain models may have
an additional battery located under
the front passenger seat.
Note
The additional battery is
automatically connected to the main vehicle battery only when the engine
is running. It does not need to be manually disconnected before
disconnecting the main vehicle
battery or before jump starting the vehicle.
Jump starting 3 195.
Diesel fuel filter
The diesel fuel filter is accessible from the underside of the vehicle.
Drain filter of residual water at every
engine oil change.
Place a container underneath the
filter housing. Loosen the knurled
screw on the lower part of the filter by
approx. one turn, to drain off the
water.
The filter is drained as soon as water- free diesel fuel emerges. Retighten
the screw.
Check diesel fuel filter at shorter
intervals if the vehicle is subjected to
extreme operating conditions.
Diesel fuel system bleeding
If the fuel tank has been run dry, it will be necessary to air vent or bleed the
diesel fuel system.
Refuel then proceed as follows:
With ignition key
● Switch on the ignition (key to position 2) for five seconds at a
time.
● Switch off ignition (key to position
1 ) for three seconds.
182Vehicle careNo.Circuit1Battery backup (with electronic
key system)2Adaptations3Adaptations4Vehicle battery (with electronic
key system)5Additional heating and ventila‐
tion / Air conditioning system6Supplementary heating and
ventilation system7Electric exterior mirrors / Addi‐
tional adaptations8Heated exterior mirrors9Radio / Multimedia / Electric
exterior mirrors / Diagnostic
socket10Multimedia / Trailer hitch11Courtesy lights / Battery
discharge protectionNo.Circuit12Right-hand high beam / Left-
hand low beam / Sidelights /
Right-hand daytime running
light13Hazard warning flashers / Turn
and lane-change signals14Central locking15Left-hand high beam / Right-
hand low beam / Tail lights /
Left-hand daytime running light16Front fog lights / Rear fog lights /
Number plate lighting17Alarm / Horn / Lighting / Wiper18Instrument cluster19Heating and ventilation system20Rear window wiper / Wind‐
screen washer pump / Horn21General battery22Reversing lights23Brake switchNo.Circuit24Fuel injection / Starter25Airbag / Steering column lock26Passenger power window27Power steering28Brake lights29Battery backup (with electronic
key system)30Service display31Cigarette lighter / Power outlet32Heating and ventilation system33Brake lights / ABS / Immobiliser34Interior lighting / Air conditioning35Starting with electronic key
system36Rear window wiper37Warning chimes38Load compartment power outlet39Driver power window
Vehicle care183No.Circuit40Rear power outlet41Starting / Body control module42Heated seats43Tachograph44Windscreen wiper45Heating / Air conditioning
After having changed defective fuses,
replace the trim panel.
Vehicle tools
Tools
The jack, wheel wrench, wheel bolt
sleeve, torx key, adapters, wheel
cover hook, towing eye are contained
in a unit, stowed under the driver's
seat.
Slide seat forwards and fold the
backrest forwards 3 48 to access the
tool box. The tool box may be secured
in position with a wing nut. Rotate
wing nut anticlockwise to release.
Wheel changing 3 192, Spare wheel
3 193.
Vehicles with tyre repair kit: The
wheel cover hook and torx key are
stored within the tyre repair kit case,
stowed under the driver's seat.
Tyre repair kit 3 189.
186Vehicle careTrailer towing
When towing a trailer with a fully
laden vehicle, the tyre pressure must
be increased by 20 kPa/0.2 bar
(3.0 psi) and the maximum speed
limited to 100 km/h.
Trailer towing 3 161.
Tyre pressure monitoring
system
The tyre pressure monitoring system
uses radio and sensor technology to
check tyre pressure levels.Caution
Tyre pressure monitoring system
warns only about low tyre pressure condition and does not replace
regular tyre maintenance by the
driver.
All wheels must be equipped with pressure sensors and the tyres must
have the prescribed pressure.
Note
In countries where the tyre pressure
monitoring system is legally
required, the use of wheels without
pressure sensors will invalidate the
vehicle type approval.
The tyre pressure monitoring system
sensors monitor the air pressure in
the tyres and transmit tyre pressure
readings to a receiver located in the
vehicle.
Tyre pressure chart 3 218.
Low tyre pressure conditionA detected low tyre pressure
condition is indicated by illumination
of control indicator w 3 100 and a
corresponding message appears in
the Driver Information Centre.
If w illuminates, stop as soon as
possible and inflate the tyres as
recommended 3 218.
After inflating, some driving may be
required to update the tyre pressure
values in the system. During this time
w may illuminate.
If w illuminates at lower temperatures
and extinguishes after some driving,
this could be an indicator for
approaching a low tyre pressure
condition. Check tyre pressure of all
four tyres.
If the tyre pressure must be reduced
or increased, switch off ignition.
Only mount wheels with pressure
sensors, otherwise w flashes for
several seconds then illuminates
continuously together with control
indicator F 3 98 and a corresponding
message appears in the Driver
Information Centre.
202Service and maintenanceRomania, Bulgaria, Moldova, Cyprus:
Maintenance of your vehicle is
required every 30,000 km or after
one year, whichever occurs first,
unless otherwise indicated by the service display.
Australia, New Zealand:
Maintenance of your vehicle is
required every 30,000 km or after
two years, whichever occurs first,
unless otherwise indicated by the
service display.
Turkey:
Maintenance of your vehicle is required every 20,000 km or after
one year, whichever occurs first,
unless otherwise indicated by the service display.
Morocco:
Maintenance of your vehicle is
required every 15,000 km or after
one year, whichever occurs first, unless otherwise indicated by the
service display.South Africa:
Maintenance of your vehicle is
required every 15,000 km or after
one year, whichever occurs first,
unless otherwise indicated by the service display.
Russia, Ukraine, Belarus,
Kazakhstan:
Maintenance of your vehicle is
required every 15,000 km or after
one year, whichever occurs first,
unless otherwise indicated by the
service display.
Algeria, Tunisia:
Maintenance of your vehicle is
required every 10,000 km or after
one year, whichever occurs first,
unless otherwise indicated by the
service display.
International:
Maintenance of your vehicle is
required every 10,000 km or after
one year, whichever occurs first,
unless otherwise indicated by the
service display.
International countries include:
Malta, Singapore.International+:
Maintenance of your vehicle is
required every 8,000 km or after
one year, whichever occurs first,
unless otherwise indicated by the
service display.
International + countries include:
To be defined.
International++:
Maintenance of your vehicle is
required every 5,000 km or after
six months, whichever occurs first,
unless otherwise indicated by the
service display.
International ++ countries include:
Hong Kong.
Severe operating conditions exist if
one or more of the following
circumstances occur frequently: Cold
starting, stop and go operation, trailer operation, mountain driving, driving
on poor and sandy road surfaces,
increased air pollution, presence of
airborne sand and high dust content,
driving at high altitude and large
variations of temperature. Under
these severe operating conditions,