
96Instruments and controls9Danger
Risk of fatal injury for a child using
a child restraint system together
with activated front passenger
airbag.
Risk of fatal injury for an adult
person with deactivated front
passenger airbag.
Airbag system 3 55, belt tensioners
3 51, airbag deactivation 3 59.
Charging system p illuminates red.
Illuminates when the ignition is
switched on and extinguishes shortly after the engine starts.
Illuminates when the engine is
running
Stop, switch off engine. Vehicle
battery is not charging. Engine
cooling may be interrupted. The
brake servo unit may cease to be
effective. Seek the assistance of a
workshop.
Malfunction indicator light
Z illuminates or flashes yellow.
Illuminates briefly when the ignition is
switched on.
Illuminates when the engine is
running
Fault in the emission control system. The permitted emission limits may be exceeded. Seek the assistance of a
workshop immediately.
If Z illuminates in combination with
A , stop vehicle and switch off engine
as soon as possible.9 Warning
Have the cause of the fault
remedied immediately by a
workshop.
Flashes when the engine is
running
Fault that could lead to catalytic
converter damage. Ease up on the
accelerator until the flashing stops.
Seek the immediate assistance of a
workshop.
Service vehicle soon
A illuminates yellow.
Illuminates briefly when the ignition is
switched on.
The vehicle needs a service.
May illuminate in combination with
another control indicator or a
message in the Driver Information
Centre 3 101.
Illuminates if cleaning of the diesel particle filter is required and
automatic cleaning does not occur
3 141.9 Warning
Have the cause of the fault
remedied immediately by a
workshop.
Service display
Control indicator o also illuminates in
the Driver Information Centre when
the remaining distance before the
next service reaches 0 miles or the
service date is due.

Climate control115Climate controlClimate control systems.............115
Heating and ventilation system 115
Air conditioning system ...........116
Electronic climate control system .................................... 117
Rear heating system ...............119
Rear air conditioning system ...121
Auxiliary heater ........................122
Air vents ..................................... 128
Adjustable air vents .................128
Fixed air vents ......................... 129
Glovebox cooler ......................129
Maintenance .............................. 129
Air intake ................................. 129
Pollen filter ............................... 129
Air conditioning regular operation ................................ 129
Service .................................... 129Climate control systems
Heating and ventilation system
Controls for: ● temperature
● fan speed
● air distribution
● demisting and defrosting
Heated rear window Ü 3 39, Heated
seats ß 3 48.
Temperaturered:warmblue:cold
Heating will not be fully effective until
the engine has reached normal
operating temperature.
Fan speed
Adjust the air flow by switching the fan
to the desired speed.
Air distribution
M:to head areaL:to head area and foot wellK:to foot wellJ:to windscreen, front door
windows and foot wellV:to windscreen and front door
windows
Intermediate settings are possible.
Demisting and defrosting the
windows
● Set temperature control to warmest level.
● Set fan speed to highest level.

Climate control129Bus
Adjustable air vents may be located inthe roof frame above the seats. Turn
adjuster to increase/decrease airflow
to the appropriate seat.
Fixed air vents Additional air vents are located
beneath the windscreen and door
windows and in the foot wells.
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.
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.
ServiceFor 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

Driving and operating131Driving and
operatingDriving hints ............................... 132
Driving economically ...............132
Control of the vehicle ...............132
Steering ................................... 132
Starting and operating ...............133
New vehicle running-in ............133
Ignition switch positions ...........133
Starting the engine ..................134
Idle speed control ....................135
Overrun cut-off ........................ 135
Stop-start system ....................135
Parking .................................... 138
Air suspension ......................... 139
Engine exhaust .......................... 141
Diesel particle filter ..................141
Catalytic converter ...................141
AdBlue ..................................... 142
Manual transmission ..................149
Manual transmission automa‐ ted .............................................. 149
Transmission display ...............149
Starting the engine ..................150
Selector lever .......................... 150Manual mode........................... 151
Electronic driving programmes 151
Fault ........................................ 152
Interruption of power supply ....153
Brakes ........................................ 153
Antilock brake system .............153
Parking brake .......................... 154
Brake assist ............................. 155
Hill start assist ......................... 155
Ride control systems .................155
Traction Control system ..........155
Electronic stability program .....156
Limited-slip rear axle ...............158
Driver assistance systems .........158
Cruise control .......................... 158
Speed limiter ........................... 162
Parking assist .......................... 162
Rear view camera ...................164
Lane departure warning ..........166
Fuel ............................................ 167
Fuel for diesel engines ............167
Refuelling ................................ 168
Fuel consumption - CO 2-
Emissions .............................. 169
Trailer hitch ................................ 170
General information .................170
Driving characteristics and towing tips .............................. 170
Trailer towing ........................... 170Towing equipment ...................171
Trailer stability assist ...............171
Auxiliary features .......................171
Power take-off ......................... 171

Driving and operating137Conditions for an Autostop
The stop-start system checks if each
of the following conditions is fulfilled,
otherwise an Autostop will be
inhibited and control indicator \ will
illuminate in the instrument cluster.
● the stop-start system is not manually deactivated
● the bonnet is fully closed
● the vehicle battery is sufficiently charged and in good condition
● the engine is warmed up
● the engine coolant temperature is
not too high
● the ambient temperature is not too low
● the defrosting function is not activated
● the climate control system does not inhibit an Autostop
● the rear air conditioning system is
not activated
● the brake vacuum is sufficient● the self-cleaning function of the diesel particle filter is not active
3 141
● the vehicle has moved since the last Autostop
Otherwise an Autostop will be
inhibited.
An Autostop may become
unavailable as the ambient
temperature approaches freezing
point.
Certain settings of the climate control
system may also inhibit an Autostop.
See "Climate control" chapter for
further information 3 115.
Immediately after motorway driving
an Autostop may be inhibited.
New vehicle running-in 3 133.
Vehicle battery discharge protection
To ensure reliable engine restarts, several vehicle battery discharge
protection features are implemented
as part of the stop-start system.Restart of the engine by the driverManual transmission
With the selector lever in neutral,
depress the clutch pedal to restart the
engine.
Notice
If any gear is selected, the clutch
pedal must be fully depressed to
restart the engine.
If the engine does not restart first
time, depress clutch pedal fully again.Manual transmission automated
With the selector lever in position N
(or A/M ) and the parking brake
released, release the brake pedal to
restart the engine.
Engaging reverse gear or depressing the accelerator pedal may also restart the engine.
The green control indicator Ï will
extinguish in the instrument cluster
when the engine is restarted. If
certain conditions are not fulfilled, a
restart will not take place; start using
the ignition key.
Starting the engine 3 134.

Vehicle care173Vehicle careGeneral Information...................174
Accessories and vehicle modifications .......................... 174
Vehicle storage ........................174
End-of-life vehicle recovery .....175
Vehicle checks ........................... 175
Performing work ......................175
Bonnet ..................................... 175
Engine oil ................................. 176
Engine coolant ......................... 178
Power steering fluid .................178
Washer fluid ............................ 179
Brakes ..................................... 180
Brake fluid ............................... 180
Vehicle battery ......................... 180
Diesel fuel filter ........................182
Diesel fuel system bleeding .....183
Wiper blade replacement ........183
Bulb replacement .......................184
Headlights ............................... 184
Adaptive forward lighting .........187
Fog lights ................................. 187
Front turn signal lights .............187
Tail lights ................................. 188
Side turn signal lights ..............190Centre high-mounted brake
light ......................................... 190
Number plate light ...................191
Interior lights ............................ 192
Instrument panel illumination ...193
Electrical system ........................193
Fuses ....................................... 193
Engine compartment fuse box . 194
Instrument panel fuse box .......195
Load compartment fuse box ....196
Vehicle tools .............................. 198
Tools ........................................ 198
Wheels and tyres .......................199
Tyres ....................................... 199
Winter tyres ............................. 199
Tyre designations ....................199
Tyre pressure .......................... 199
Tyre pressure monitoring system .................................... 200
Tread depth ............................. 202
Changing tyre and wheel size . 203 Wheel covers ........................... 203
Tyre chains .............................. 203
Tyre repair kit .......................... 204
Wheel changing .......................207
Spare wheel ............................ 209
Jump starting ............................. 212Towing....................................... 214
Towing the vehicle ...................214
Towing another vehicle ...........215
Appearance care .......................216
Exterior care ............................ 216
Interior care ............................. 218

Vehicle care183The filter is drained as soon as diesel
fuel emerges from the knurled screw
at the bottom. Retighten the two
screws.
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 willbe necessary to air vent or bleed the
diesel fuel system.
Fill the tank with fuel and proceed as
follows:
1. Place a suitable container underneath the fuel filter vent
screw to collect fuel.
2. Loosen the vent screw (arrowed) by one turn.
3. Manually operate the in-line supply pump slowly and steadily
until fuel discharging from the
loosened vent screw is free of air
bubbles.
4. Retighten the vent screw.
In vehicles without an in-line supply
pump, fill the tank with fuel and
proceed as follows:Caution
Do not turn ignition key to position 3 before beginning the bleeding
procedure.
Ignition switch positions 3 133.
1. Turn ignition key to position 2 and
hold for five seconds.
2. Turn key back to position 1 and
wait for three seconds.
3. Repeat Step 1 and 2 multiple times.
4. Turn key to position 3, then return
to 0.
If the engine cannot be started after
several attempts to bleed the diesel
fuel system, seek the assistance of a
workshop.
Wiper blade replacement
Wiper blades on the windscreen If required, use the step located below
the headlights to reach the
windscreen wiper.

Vehicle care195SymbolCircuitKWindscreen wipernHeating and ventilation
system / Air conditioningVHeated windscreenQPneumatic suspension
Instrument panel fuse box
Located behind the trim panel on the
left-hand side of the instrument panel. Pull upper part of trim panel to
remove.
Do not store any objects behind this
panel.
Some circuits may be protected by
several fuses.SymbolCircuitZInfotainment system / Seat
heating / Driver Information
Centre / Audio connec‐
tions / Alarm?Power outletÌCigarette lightereInstrument panelUCentral locking0Interior lightsOTurn signals / Rear fog
lights / Body control moduleDIAGDiagnostic connectoruABS / Electronic Stability
ProgramdInterior lights / Brake lightsZBody control moduleSymbolCircuitSTOPBrake lightIBody control module /
Power windows / Heating
and ventilation system / Air
conditioningmLeft heated rear windownRight heated rear windowRWindscreen washerMElectronic immobiliserUHeated seatsFBLCornering lightlHands-free connection&TachographPTOPower take-offjHornÍPreheating / Diesel fuel filterxClimate control fandHeated exterior mirrors