94Instruments and controlsUCruise control speed limiter
3 99&Tachograph 3 99yDoor open 3 99
Turn signal
O flashes green.
Flashes if a turn signal or the hazard
warning flashers are activated.
Rapid flashing: failure of a turn signal
light or associated fuse.
An audible warning can be heard
when the turn signals are on. When
towing a trailer, the pitch of the
audible warning changes.
Bulb replacement 3 183.
Fuses 3 192.
Turn signals 3 109.
Seat belt reminder
X illuminates or flashes red.
If the seat belt is unfastened, control
indicator X will flash when vehicle
speed exceeds approx. 10 mph. A warning chime also sounds for
approx. 90 seconds.
If the seat belt is fastened, the
indicator light extinguishes.9 Warning
Fasten seat belt before each trip.
In the event of an accident, people
not wearing seat belts endanger their fellow occupants and
themselves.
Three-point seat belts 3 52.
Airbag and belt tensioners
v illuminates yellow.
When the ignition is switched on, the control indicator illuminates briefly. If
it does not illuminate or illuminates
whilst driving, there is a fault in the
airbag system. Seek the assistance
of a workshop. The airbags and belt
pretensioners may fail to trigger in the event of an accident.
Deployment of the belt pretensioners
or airbags is indicated by continuous
illumination of v.9 Warning
Have the cause of the fault
remedied immediately by a
workshop.
Belt pretensioners, airbag system
3 51, 3 55.
Airbag deactivation
W illuminates yellow when the
ignition is switched on and remains
illuminated when the front passenger
airbag has been deactivated 3 59.
130Driving and operatingDriving and
operatingDriving hints ............................... 131
Driving economically ...............131
Control of the vehicle ...............131
Steering ................................... 131
Starting and operating ...............132
New vehicle running-in ............132
Ignition switch positions ...........132
Starting the engine ..................133
Idle speed control ....................134
Overrun cut-off ........................ 134
Stop-start system ....................134
Parking .................................... 137
Air suspension ......................... 138
Engine exhaust .......................... 140
Diesel particle filter ..................140
Catalytic converter ...................140
AdBlue ..................................... 141
Manual transmission ..................148
Manual transmission automa‐ ted .............................................. 148
Transmission display ...............148
Starting the engine ..................149
Selector lever .......................... 149Manual mode........................... 150
Electronic driving programmes 150
Fault ........................................ 151
Interruption of power supply ....152
Brakes ........................................ 152
Antilock brake system .............152
Parking brake .......................... 153
Brake assist ............................. 154
Hill start assist ......................... 154
Ride control systems .................154
Traction Control system ..........154
Electronic stability program .....155
Limited-slip rear axle ...............157
Driver assistance systems .........157
Cruise control .......................... 157
Speed limiter ........................... 161
Parking assist .......................... 161
Rear view camera ...................163
Lane departure warning ..........165
Fuel ............................................ 166
Fuel for diesel engines ............166
Refuelling ................................ 167
Fuel consumption - CO 2-
Emissions .............................. 168
Trailer hitch ................................ 169
General information .................169
Driving characteristics and towing tips .............................. 169
Trailer towing ........................... 169Towing equipment ...................170
Trailer stability assist ...............170
Auxiliary features .......................170
Power take-off ......................... 170
138Driving and operating● Close the windows.
● Turn the ignition key to position
0 and remove it. Turn the
steering wheel until the
steering wheel lock is felt to
engage.
Lock the vehicle 3 22 and activate the
anti-theft locking system 3 32 and
anti-theft alarm system 3 32.
Air suspension
Operates automatically when the
vehicle is driven. The air suspension
system constantly adjusts the ride
height according to the vehicle load.
Caution
To ensure safe operation of the air
suspension system, do not exceed the maximum permissible gross
vehicle weight rating. Refer to
identification plate 3 222 or the
vehicle documents.
For further information on the air
suspension system, refer to the
operating instructions supplied.
Master switchCaution
The air suspension system must
be switched off when the vehicle is being towed, jump‐started, raised
off the ground or transported.
Do not switch off the air
suspension system when driving.
Jump starting 3 211, Towing the
vehicle 3 213.
The master switch is located on the
door pillar.
Switch on to enable operation and
adjustment of the air suspension
system.
Switch off to put the vehicle into
service mode.
Remote control
When increased ground clearance or improved vehicle access is required,the suspension can be raised or
lowered using the remote control.
140Driving and operatingEngine exhaust9Danger
Engine exhaust gases contain
poisonous carbon monoxide,
which is colourless and odourless and could be fatal if inhaled.
If exhaust gases enter the interior
of the vehicle, open the windows.
Have the cause of the fault
rectified by a workshop.
Avoid driving with an open load
compartment, otherwise exhaust
gases could enter the vehicle.
Diesel particle filter
The diesel particle filter system filters
harmful soot particles out of the
exhaust gases. The system includes
a self-cleaning function that runs
automatically during driving without
any notification.
The filter is cleaned by periodically
burning off the soot particles at high
temperature. This process takes
place automatically under set driving
conditions. Autostop is not available
and fuel consumption may be higher
during this period. The emission of
smells and smoke during this process is normal.
Under certain driving conditions, e.g.
short distances, the system cannot
clean itself automatically.
If cleaning of the filter is required and
if previous driving conditions did not
enable automatic cleaning, it will be
indicated by illumination of control
indicator A 3 95. Seek the
assistance of a workshop
immediately.Caution
If the cleaning process is
interrupted, there is a risk of
provoking severe engine damage.
Cleaning takes place quickest at high engine speeds and loads.
Catalytic converter
The catalytic converter reduces the
amount of harmful substances in the
exhaust gases.
Caution
Fuel grades other than those listed on page 3 166, 3 224 could
damage the catalytic converter or
electronic components.
Unburnt fuel will overheat and
damage the catalytic converter.
Therefore avoid excessive use of the starter, running the fuel tank
dry and starting the engine by
pushing or towing.
In the event of misfiring, uneven
engine running, a reduction in engine performance or other unusual
problems, have the cause of the fault
rectified by a workshop as soon as
possible. In an emergency, driving
can be continued for a short period,
keeping vehicle speed and engine
speed low.
If control indicator Z flashes, the
permitted emission limits may be
exceeded. Lift your foot off the
accelerator until Z stops flashing and
is steadily illuminated. Contact a
workshop immediately.
152Driving and operatingInterruption of power supplyThe clutch is not disengaged if there
is an interruption of the power supply
when a gear is engaged. The vehicle
cannot move.
If the vehicle battery is discharged,
start the vehicle using jump leads
3 211.
If the cause of the fault is not a
discharged vehicle battery, seek the
assistance of a workshop.
If neutral cannot be selected, the
vehicle must only be towed with the
drive wheels raised off the ground
3 213.
Towing the vehicle 3 213.Brakes
The brake system comprises two
independent brake circuits.
If a brake circuit fails, the vehicle can
still be braked using the other brake
circuit. However, braking effect is
achieved only when you depress the
brake pedal firmly. You need to use
considerably more force for this. The
braking distance is extended. Seek
the assistance of a workshop before
continuing your journey.
When the engine is not running, the
support of the brake servo unit
disappears once the brake pedal has
been depressed once or twice.
Braking effect is not reduced, but
braking requires significantly greater
force. It is especially important to bear this in mind when being towed.
Control indicator R 3 96.
Antilock brake system
Antilock brake system (ABS)
prevents the wheels from locking.ABS starts to regulate brake pressure as soon as a wheel shows a tendency to lock. The vehicle remains
steerable, even during hard braking.
ABS control is made apparent
through a pulse in the brake pedal
and the noise of the regulation
process.
For optimum braking, keep the brake
pedal fully depressed throughout the
braking process, despite the fact that
the pedal is pulsating. Do not reduce
the pressure on the pedal.
Control indicator u 3 96.
Fault
If control indicators u and A
illuminate with the messages CHECK
ABS and CHECK ESP in the Driver
Information Centre, there is a fault in
the ABS. The brake system remains
operational but without ABS
regulation.
Driving and operating169Trailer hitch
General information
Only use towing equipment that has
been approved for your vehicle.
Entrust fitting of towing equipment at
a later date to a workshop. It may be
necessary to make changes that
affect the cooling system, heat
shields or other equipment.
Driving characteristics and towing tips
In the case of trailers with brakes,
attach the breakaway stopping cable.
Before attaching a trailer, lubricate
the coupling ball. However, do not do
so if a stabiliser, which acts on the coupling ball, is being used to reduce
snaking movements. For trailers with
low driving stability the use of a
stabiliser is recommended.
A maximum speed of 50 mph must
not be exceeded, even in countries
where higher speeds are permitted.If the trailer starts snaking, drive more slowly, do not attempt to correct the
steering and brake sharply if
necessary.
When driving downhill, drive in the
same gear as if driving uphill and
drive at a similar speed.
Adjust tyre pressure to the value
specified for full load 3 243.
Trailer towing
Trailer loads The permissible trailer loads are
vehicle-dependent and engine-
dependent maximum values which
must not be exceeded. The actual
trailer load is the difference between
the actual gross weight of the trailer
and the actual coupling socket load
with the trailer coupled.
The permissible trailer loads are
specified in the vehicle documents. In
general, they are valid for gradients
up to max. 12%.
The permitted trailer load applies up to the specified incline and up to an
altitude of 1000 metres above sealevel. Since engine power decreases as altitude increases due to the airbecoming thinner, therefore reducing
climbing ability, the permissible gross
train weight also decreases by 10%
for every 1000 metres of additional
altitude. The gross train weight does
not have to be reduced when driving on roads with slight inclines (less than 8%, e.g. motorways).
The permissible gross train weight
must not be exceeded. This weight is
specified on the identification plate
3 222.
Vertical coupling load
The vertical coupling load is the load
exerted by the trailer on the coupling
ball. It can be varied by changing the
weight distribution when loading the
trailer.
The maximum permissible vertical
coupling load is specified on the
towing equipment identification plate
and in the vehicle documents. Always aim for the maximum load, especially in the case of heavy trailers. The
vertical coupling load should never
fall below 25 kg.
170Driving and operatingIn the case of trailer loads of
1200 kg or more, the vertical coupling load should not be less than 50 kg.
Rear axle load When the trailer is coupled and the
towing vehicle fully loaded (including all occupants), the permissible rear
axle load (see identification plate or
vehicle documents) must not be
exceeded.
Towing equipmentCaution
When operating without a trailer,
remove the coupling ball bar.
Towing equipment audible
warning
For vehicles fitted with towing
equipment, when connected to a
trailer the pitch of the audible warning
changes upon operation of the turn
signals.
The pitch of the audible warning will
change if a turn signal light on the
trailer or the towing vehicle fails.
Trailer stability assist
If the system detects snaking
movements, engine power is reduced
and the vehicle/trailer combination is
selectively braked until the snaking ceases. While the system is working,keep steering wheel as still as
possible.
Trailer stability assist (TSA) is a
function of the Electronic Stability
Program (ESP) 3 155.Auxiliary features
Power take-off
Activation
To activate the power take-off, with
the vehicle stationary and the engine
idling:
● Set the gearshift lever to neutral (vehicles with manual
transmission automated:
selector lever in position N).
● Depress the clutch pedal.
172Vehicle careVehicle careGeneral Information...................173
Accessories and vehicle modifications .......................... 173
Vehicle storage ........................173
End-of-life vehicle recovery .....174
Vehicle checks ........................... 174
Performing work ......................174
Bonnet ..................................... 174
Engine oil ................................. 175
Engine coolant ......................... 176
Power steering fluid .................177
Washer fluid ............................ 178
Brakes ..................................... 178
Brake fluid ............................... 178
Vehicle battery ......................... 179
Diesel fuel filter ........................181
Diesel fuel system bleeding .....181
Wiper blade replacement ........182
Bulb replacement .......................183
Headlights ............................... 183
Adaptive forward lighting .........185
Fog lights ................................. 186
Front turn signal lights .............186
Tail lights ................................. 187
Side turn signal lights ..............188Centre high-mounted brake
light ......................................... 189
Number plate light ...................190
Interior lights ............................ 190
Instrument panel illumination ...191
Electrical system ........................192
Fuses ....................................... 192
Engine compartment fuse box . 193
Instrument panel fuse box .......193
Load compartment fuse box ....194
Vehicle tools .............................. 196
Tools ........................................ 196
Wheels and tyres .......................197
Tyres ....................................... 197
Winter tyres ............................. 198
Tyre designations ....................198
Tyre pressure .......................... 198
Tyre pressure monitoring system .................................... 199
Tread depth ............................. 201
Changing tyre and wheel size . 201 Wheel covers ........................... 202
Tyre chains .............................. 202
Tyre repair kit .......................... 202
Wheel changing .......................206
Spare wheel ............................ 208
Jump starting ............................. 211Towing....................................... 213
Towing the vehicle ...................213
Towing another vehicle ...........214
Appearance care .......................215
Exterior care ............................ 215
Interior care ............................. 216