Driving and operating127Driving and
operatingDriving hints ............................... 127
Driving economically ...............127
Control of the vehicle ...............128
Steering ................................... 128
Starting and operating ...............129
New vehicle running-in ............129
Ignition switch positions ...........129
Power button ........................... 129
Starting the engine ..................131
Idle speed control ....................132
Vehicle shutdown ....................132
Overrun cut-off ........................ 133
Stop-start system ....................133
Parking .................................... 136
Engine exhaust .......................... 136
Diesel particle filter ..................136
Catalytic converter ...................137
AdBlue ..................................... 137
Manual transmission ..................143
Brakes ........................................ 144
Antilock brake system .............144
Parking brake .......................... 145Brake assist............................. 145
Hill start assist ......................... 145
Ride control systems .................146
Traction Control system ..........146
Electronic stability program .....147
Driver assistance systems .........149
Cruise control .......................... 149
Speed limiter ........................... 152
Parking assist .......................... 152
Rear view camera ...................154
Fuel ............................................ 156
Fuel for diesel engines ............156
Refuelling ................................ 157
Fuel consumption - CO 2-
Emissions .............................. 158
Trailer hitch ................................ 159
General information .................159
Driving characteristics and towing tips .............................. 159
Trailer towing ........................... 159
Trailer stability assist ...............160Driving 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.
Driving and operating137conditions. 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 the illumination of control
indicators F 3 96 and Z 3 96 in the
instrument cluster. 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 3 156, 3 206 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.
Malfunction indicator light 3 96.
AdBlue
General information The selective catalytic reduction
(BlueInjection) is a method to
substantially reduce the nitrogen
oxides in the exhaust emission. This
is achieved by injecting a Diesel
Exhaust Fluid (DEF) into the exhaust
system.
The designation of this fluid is
AdBlue ®
. It is a non-toxic, non-
flammable, colourless and odourless fluid which consists of 32% urea and
68% water.
Driving and operating159Trailer hitch
General information
Entrust retrofitting of towing
equipment to a workshop. It may be
necessary to make changes that
affect the cooling system, heat
shields or other equipment. Only use
towing equipment that has been
approved for your vehicle.
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 3 216.
Trailer towing
Trailer loads The permissible trailer loads are
vehicle 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 air
becoming 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
3 204.
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.
160Driving 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.
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® Plus
) 3 147.
Vehicle care161Vehicle careGeneral Information...................162
Accessories and vehicle modifications .......................... 162
Vehicle storage ........................162
End-of-life vehicle recovery .....163
Vehicle checks ........................... 163
Performing work ......................163
Bonnet ..................................... 163
Engine oil ................................. 164
Engine air filter ........................ 165
Engine coolant ......................... 166
Power steering fluid .................166
Washer fluid ............................ 167
Brakes ..................................... 167
Brake fluid ............................... 167
Vehicle battery ......................... 168
Diesel fuel filter ........................170
Diesel fuel system bleeding .....170
Wiper blade replacement ........171
Bulb replacement .......................172
Headlights ............................... 172
Fog lights ................................. 172
Front turn signal lights .............173
Tail lights ................................. 173
Side turn signal lights ..............174Centre high-mounted brake
light ......................................... 174
Reversing light ......................... 175
Number plate light ...................176
Fog tail light ............................. 176
Interior lights ............................ 177
Instrument panel illumination ...177
Electrical system ........................178
Fuses ....................................... 178
Instrument panel fuse box .......179
Vehicle tools .............................. 182
Tools ........................................ 182
Wheels and tyres .......................183
Tyres ....................................... 183
Winter tyres ............................. 183
Tyre designations ....................183
Tyre pressure .......................... 183
Tyre pressure monitoring system .................................... 185
Tread depth ............................. 187
Changing tyre and wheel size . 187
Wheel covers ........................... 187
Tyre chains .............................. 188
Tyre repair kit .......................... 188
Wheel changing .......................191
Spare wheel ............................ 192
Jump starting ............................. 194Towing....................................... 195
Towing the vehicle ...................195
Towing another vehicle ...........196
Appearance care .......................197
Exterior care ............................ 197
Interior care ............................. 199
182Vehicle careNo.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 46 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 3 191, Spare wheel
3 192.
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 3 188.
Vehicle care185Trailer towingWhen 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 60 mph.
Trailer towing 3 159.
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.
Notice
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 3 216.
Low tyre pressure conditionA detected low tyre pressure
condition is indicated by illumination
of control indicator w 3 98 and a
corresponding message appears in
the Driver Information Centre.
If w illuminates, stop as soon as
possible and inflate the tyres as
recommended 3 216.
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 96 and a corresponding
message appears in the Driver
Information Centre.
Vehicle care195
Lead connection order:1. Connect the red lead to the positive terminal (1) of the booster
battery.
2. Connect the other end of the red lead to the positive terminal (2) of
the discharged vehicle battery.
3. Connect the black lead to the negative terminal (3) of the
booster battery.
4. Connect the other end of the black
lead to a vehicle grounding point
(4), such as the engine block or an
engine mounting bolt. Connect as
far away from the discharged
vehicle battery as possible,
however at least 60 cm.
Route the leads so that they cannot
catch on rotating parts in the engine
compartment.
To start the engine: 1. Start the engine of the vehicle providing the jump start.
2. After five minutes, start the other engine. Start attempts should be
made for no longer than
15 seconds at an interval of
one minute.
3. Allow both engines to idle for approx. three minutes with the
leads connected.
4. Switch on electrical consumers (e.g. headlights, heated rear
window) of the vehicle receiving
the jump start.
5. Reverse above sequence exactly when removing leads.Towing
Towing the vehicle The towing eye is stowed with thevehicle tools 3 182.
Release cap using a suitable tool.
Screw the towing eye clockwise into
the front towing point and tighten fully
using the wheel wrench.
Attach a tow rope - or better still a tow rod - to the towing eye, never to the
bumper or front suspension units.