Driving and operating141Engine 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
Automatic cleaning process
The diesel particle filter system filters
harmful soot particles out of the
exhaust gases.
The start of saturation of the particle
filter is indicated by the temporary illumination of % or H ,
accompanied by a message in the
Driver Information Centre.
As soon as the traffic conditions
permit, regenerate the filter by driving at a vehicle speed of at least 60 km/huntil the control indicator
extinguishes.
Note
On a new vehicle, the first particle
filter regeneration operations may
be accompanied by a burning smell,
which is normal. Following
prolonged operation of the vehicle at
very low speed or at idle, you may,
in exceptional circumstances, notice the emission of water vapour at the
exhaust on acceleration. This does
not affect the behaviour of the
vehicle or the environment.
Cleaning process not possible
If % or H stays on, accompanied
by an audible signal and a message,
this indicates that the particle filter
additive level is too low.
The reservoir must be topped-up
without delay. Seek the assistance of
a workshop.Catalytic converter
The catalytic converter reduces the
amount of harmful substances in the
exhaust gases.Caution
Fuel grades other than those listed on pages 3 177, 3 233 could
damage the catalytic converter or
electronic components.
Unburnt petrol 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.
142Driving and operatingAdBlue
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 ammonia released by
the fluid reacts with nitrous gases
(NO x) from the exhaust and turns it
into nitrogen and water.
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.9 Warning
Avoid contact of your eyes or skin
with AdBlue.
In case of eye or skin contact,
rinse off with water.
Caution
Avoid contact of the paintwork with AdBlue.
In case of contact, rinse off with water.
AdBlue freezes at a temperature of
approx. -11 °C. As the vehicle is
equipped with an AdBlue pre-heater,
the emissions reduction at low
temperatures is ensured. The AdBlue
pre-heater works automatically.
Level warnings
The AdBlue consumption is
approximately 0.7 litres per 1000 km.
The consumption can be higher
depending on driving behaviour (e.g.
high load or towing).
Depending on the calculated range of AdBlue, different messages are
displayed in the Driver Information
Centre. The messages and the
restrictions are a legal requirement.
The first possible warning message appears at an AdBlue range below
2400 km, shows up at each start and each 300 km range reduction:
Top up AdBlue: Starting impossible in 2400 km
Additionally, control indicator Y
illuminates continuously and a chime
sounds with every message pop-up.
At an AdBlue range below 600 km,
the following warning message is
being displayed, shows up at each
start and each 20 km range reduction:
Top up AdBlue: Starting impossible in 600 km
Additionally, control indicator Y
flashes continuously and a chime
sounds with every message pop-up.
Note
In case of high AdBlue consumption,
the Driver Information Centre may
display this warning without the
previous warning stages.
The last warning level is entered
when the AdBlue tank is empty.
Restart of the engine is not possible.
146Driving and operatingEngine braking
To utilise the engine braking effect, select a lower gear in good time when driving downhill, see manual mode.
Rocking the vehicle Rocking the vehicle is only
permissible if the vehicle is stuck in
sand, mud or snow. Move the selector
lever between D and R in a repeat
pattern. Do not race the engine and
avoid sudden acceleration.
Parking
Apply the parking brake and engage P .Manual mode
Move selector lever out of position D
towards the left in position M.
Tap selector lever upwards + to shift
to a higher gear.
Tap the selector lever downwards - to
shift to a lower gear.
If a higher gear is selected when
vehicle speed is too low, or a lower
gear when vehicle speed is too high,
the shift is not executed. This can
cause a message in the Driver
Information Centre.
In manual mode, no automatic
shifting to a higher gear takes place
at high engine revolutions.
Gear shift indication
R with the number of a higher gear is
indicated, when upshifting is
recommended for fuel saving
reasons.
Shift indication appears only in
manual mode.
Electronic driving programmes
● Following a cold start, the operating temperature
programme increases engine
speed to quickly bring the
catalytic converter to the required
temperature.
● Special programmes automatically adapt the shifting
points when driving up inclines or
down hills.
● In snowy or icy conditions or on other slippery surfaces, the
electronic transmission control
Driving and operating149Brakes
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 the brake pedal
is depressed firmly. Considerably
more force is needed for this. The
braking distance is extended. Seek the assistance of a workshop before
continuing the 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 92.
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.
When braking in an emergency, the
hazard warning flashers are switched
on automatically depending on the
force of deceleration. They are
switched off automatically the first
time you accelerate.
After starting off, the system performs
a self-test which may be audible.
Control indicator u 3 92.
Fault9 Warning
If there is a fault in the ABS, the
wheels may be liable to lock due
to braking that is heavier than
normal. The advantages of ABS are no longer available. During
hard braking, the vehicle can no longer be steered and may
swerve.
Have the cause of the fault remedied
by a workshop.
Parking brake
9 Warning
Before leaving the vehicle, check
parking brake status. Control
indicator R must illuminate
constantly.
166Driving and operating8'' Colour-Info-Display: when search
for a parking slot, activate the system
by pressing Í. Select Driving
functions on the touch screen and
then Park Assist . Select Enter bay
parking space .
$ illuminates in the instrument cluster
to confirm the function.
Slow down the vehicle speed below
20 km/h.
Select parking side by switching on
turn signal indicator on the respective
side.
The allowed parallel distance
between the vehicle and a row of
parked cars is between 0.5 metres
and 1.5 metres.
When several successive slots are
found, the vehicle will be directed
towards the last one.
When a free slot is detected, a visual
feedback on the Colour-Info-Display
and an acoustic signal is given. Stop
the vehicle, select reverse gear,
release the steering wheel and start
moving without exceeding 7 km/h.Move forwards and backwards as
instructed by observing the warnings
of the Parking assist and paying
attention to the acoustic signals until
the end of manoeuvre is indicated. When finished, $ extinguishes in the
instrument cluster.
During the parking manoeuvre, the
system is automatically deactivated
once the rear of the vehicle is within
50 cm of an obstacle.
168Driving and operatingThe system is deactivated
automatically:
● if the ignition is switched off
● if stalling the engine
● if no manoeuvre is started within 5 minutes of selection of the type
of manoeuvre
● after a prolonged stop of the vehicle during a manoeuvre
● if the electronic stability control (ESC) is triggered
● if the speed of the vehicle exceeds the stated limit
● when the driver interrupts movement of the steering wheel
● after 4 manoeuvre cycles
● on opening the driver's door
● if one of the front wheels encounters an obstacle
● parking manoeuvre successfully ended
Deactivation by the driver or by the system during manoeuvring will beindicated on the display. Additionally, an acoustic signal sounds.The system is switched off
automatically when towing a
electrically connected trailer.
Contact your dealer to switch off the
system for a prolonged period.
Fault
In the event of a fault, $ flashes for a
few seconds, accompanied by an
acoustic signal. If the fault occurs
during the use of the system, $
extinguishes.
In the event of a fault in the power
steering, c flashes in the instrument
panel, accompanied by a message.9 Warning
Under certain circumstances,
various reflective surfaces on
objects or clothing as well as
external noise sources may cause the system to fail to detect
obstacles.
Special attention must be paid to
low obstacles which can damage
the lower part of the bumper.
Caution
Performance of the system can be reduced when sensors are
covered, e.g. by ice or snow.
Performance of the parking assist
system can be reduced due to
heavy loading.
Special conditions apply if there
are taller vehicles in the vicinity
(e.g. off-road vehicles, mini vans,
vans). Object identification and correct distance indication in the
upper part of these vehicles
cannot be guaranteed.
Objects with a very small reflection
cross-section, e.g. objects of
narrow size or soft materials, may
not be detected by the system.
Parking assist systems do not
detect objects outside the
detection range.
Note
It is possible that the sensor detects a non-existing object caused by
echo disturbance from external
170Driving and operatingThe LED comes on after a delay when
passing another vehicle slowly.
Operation conditions
The following conditions must be
fullfilled for proper operation:
● All vehicles are moving in the same direction and in adjacent
lanes.
● The speed of your vehicle is between 12 and 140 km/h.
● Passing a vehicle with a speed difference of less than 10 km/h.
● Another vehicle is passing with a
speed difference of less than 25
km/h.
● The traffic flow is normal.
● Driving on a straight or slightly curved road.
● The vehicle is not pulling a trailer.No alert will be given in the following
situations:
● In the presence of non-moving objects (parked vehicles,
barriers, street lamps, road
signs...).
● With vehicles moving in the opposite direction.
● Driving on a winding road or a sharp corner.
● When passing (or being passed by) a very long vehicle (lorry,
coach...) which is at the same
time detected at the rear in the
blind spot angle and present in
the driver's forward field of vision.
● In very heavy traffic: vehicles detected in front and behind are
confused with a lorry or a
stationary object.
● When passing too quickly.
Deactivation The system is deactivated in the
vehicle personalisation 3 103. B
extinguishes in the instrument cluster. Additionally, an acoustic signal
soundsThe state of the system is stored when switching off the ignition.
The system is automatically
deactivated when towing an
electrically connected trailer.
Fault
In the event of a fault, B flashes for a
few moments in the instrument panel,
accompanied by F and a
display message. Contact a dealer or a qualified workshop to have the
system checked.
Panoramic view system
This system allows views of the
vehicle's surroundings to be
displayed as a nearly 180° picture in
the Info display, like a bird's eye view.
The system uses: ● rear camera, installed in the tailgate
● ultrasonic parking sensors in the rear bumper
The screen in the Info display is
divided into two parts: on the right
there is a view from above the vehicle,
Driving and operating173Displayed images may be further
or closer than they appear. The
area displayed is limited and
objects that are close to either
edge of the bumper or under the
bumper are not displayed on the
screen.
System limitations
Caution
For optimal operation of the
system, it is important to keep the
lense of the camera in the tailgate between the number plate lightsalways clean. Rinse the lense with water and wipe with a soft cloth.
Do not clean the lense with a
steam-jet or high-pressure jet
cleaner.
The panoramic view system may not
operate properly when:
● The surrounding is dark.
● The sun or the beam of headlights is shining directly into
the camera lenses.
● During nighttime driving.
● Weather limits visibility, such as fog, rain, or snow.
● The camera lenses are blocked by snow, ice, slush, mud, dirt.
● The vehicle is towing a trailer.
● The vehicle had an accident.
● There are extreme temperature changes.
Rear view camera The rear view camera assists the
driver when reversing by displaying a
view of the area behind the vehicle.
The view of the camera is displayed
in the Info-Display.9 Warning
The rear view camera does not
replace driver vision. Note that
objects that are outside the
camera's field of view and the
parking assist sensors, e.g. below
the bumper or underneath the
vehicle, are not displayed.
Do not reverse or park the vehicle
using only the rear view camera.
Always check the surrounding of
the vehicle before driving.
Switching on
Rear view camera is automatically
activated when reverse gear is
engaged.
Functionality
The camera is mounted above the
licence plate.