128Climate controlTo open or close the centre air ventsand 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.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.
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.
Climate control129ServiceFor 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.
130Driving and operatingDriving and
operatingDriving hints ............................... 130
Driving economically ...............130
Control of the vehicle ...............131
Steering ................................... 131
Starting and operating ...............132
New vehicle running-in ............132
Ignition switch positions ...........132
Power button ........................... 132
Starting the engine ..................134
Idle speed control ....................135
Vehicle shutdown ....................135
Overrun cut-off ........................ 136
Stop-start system ....................136
Parking .................................... 139
Engine exhaust .......................... 140
Diesel particle filter ..................140
Catalytic converter ...................140
AdBlue ..................................... 141
Manual transmission ..................146
Brakes ........................................ 147
Antilock brake system .............147
Parking brake .......................... 148Brake assist............................. 148
Hill start assist ......................... 148
Ride control systems .................149
Traction Control system ..........149
Electronic stability program .....150
Driver assistance systems .........152
Cruise control .......................... 152
Speed limiter ........................... 155
Parking assist .......................... 155
Rear view camera ...................157
Fuel ............................................ 159
Fuel for diesel engines ............159
Refuelling ................................ 160
Fuel consumption - CO 2-
Emissions ............................... 161
Trailer hitch ................................ 162
General information .................162
Driving characteristics and towing tips .............................. 162
Trailer towing ........................... 162
Trailer stability assist ...............163Driving 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 care173disconnecting the main vehicle
battery or before jump starting the vehicle.
The terminals are designed for
additional electrical consumers up to
a maximum of 50 A.
Jump starting 3 197.
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.
● Repeat this process multiple times.
● Start the engine (key to position 3) then switch off (key to position
0 ).
Ignition switch positions 3 132.
184Vehicle 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 care185No.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 3 194.
Spare wheel 3 195.
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 3 191.
188Vehicle 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 3 162.
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 operating permit.
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 3 220.
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 3 220.
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.
204Service 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,