Keys, doors and windows33The tailgate can only be held open if
a minimum height is exceeded
(minimum opening angle from 30°).
The opening height cannot be
programmed below that height.
Safety function
If the power tailgate encounters an
obstacle during opening or closing,
the direction of movement will
automatically be reversed slightly.
Multiple obstacles in one power cycle
will deactivate the function. In this
case, close or open the tailgate
manually.
The power tailgate has pinch sensors
on the side edges. If the sensors
detect obstacles between tailgate and chassis, the tailgate will open, until it
is activated again or closed manually.
The safety function is indicated by a
warning chime.
Remove all obstacles before
resuming normal power operation.
If the vehicle is equipped with factory- fitted towing equipment and a trailer
is electrically connected, the power
tailgate can only be operated
manually.Overload
If the power tailgate is repeatedly
operated at short intervals, the
function is disabled for some time.
Move tailgate manually into end
position to reset the system.
General hints for operating
tailgate9 Danger
Do not drive with the tailgate open
or ajar, e.g. when transporting
bulky objects, since toxic exhaust
gases, which cannot be seen or
smelled, could enter the vehicle.
This can cause unconsciousness
and even death.
Caution
Before opening the tailgate, check overhead obstructions, e.g. a
garage door, to avoid damage to
the tailgate. Always check the
moving area above and behind the
tailgate.
Note
The installation of certain heavy
accessories onto the tailgate may
affect its ability to remain open.
Note
The operation of the power tailgate
is disabled under low vehicle battery
conditions. In this case, the tailgate
may not even be manually operable.
Note
With the power tailgate disabled and
all doors unlocked, the tailgate can
only be operated manually. In this
event, manually closing the tailgate
requires significantly greater force.
Note
At low outside temperatures the
tailgate may not open fully by itself.
In this event, lift the tailgate manually
to its normal end position.
140LightingTurn lightslever up:right turn lightlever down:left turn light
A resistance point can be felt when
moving the lever.
Constant flashing is activated when
the lever is being moved beyond the
resistance point. It is deactivated
when the steering wheel is moved in
the opposite direction or lever is
manually moved back to its neutral
position.
Activate temporary flashing by
holding the lever just before the
resistance point. Turn lights will flash
until lever is being released.
To activate three flashes, tap the
lever briefly without passing the
resistance point. With a trailer
connected, the turn light flashes
six times and tone frequency
changes.
Front fog lights
Operated by pressing >.
Light switch in position AUTO:
switching on front fog lights will switch headlights on automatically.
Rear fog light
Operated by pressing ø.
Light switch in position AUTO:
switching on rear fog light will switch
headlights on automatically.
Light switch in position 8: rear fog
light can only be switched on with
front fog lights.
The vehicle rear fog light is
deactivated when towing a trailer or a
plug is connected with the socket, e.
g. when a bicycle carrier is used.
Driving and operating157Driving and
operatingDriving hints ............................... 158
Control of the vehicle ...............158
Steering ................................... 158
Starting and operating ...............158
New vehicle running-in ............158
Power button ........................... 159
Retained power off ..................160
Starting the engine ..................160
Overrun cut-off ........................ 162
Stop-start system ....................162
Parking .................................... 164
Engine exhaust .......................... 165
Exhaust filter ............................ 165
Catalytic converter ...................166
AdBlue ..................................... 167
Automatic transmission ..............169
Transmission display ...............169
Gear selection ......................... 170
Manual mode ........................... 171
Electronic driving programmes 172
Fault ........................................ 173
Interruption of power supply ....173
Manual transmission ..................174Drive systems ............................ 174
All-wheel drive ......................... 174
Brakes ........................................ 175
Antilock brake system .............175
Parking brake .......................... 176
Brake assist ............................. 177
Hill start assist ......................... 177
Ride control systems .................178
Traction Control system ..........178
Electronic Stability Control ......179
Interactive driving system ........180
Driver assistance systems .........182
Cruise control .......................... 182
Speed limiter ........................... 184
Adaptive cruise control ............185
Forward collision alert .............196
Following distance indication ...199
Active emergency braking .......200
Front pedestrian protection .....203
Parking assist .......................... 205
Side blind spot alert .................212
Lane change alert ....................213
Panoramic view system ...........215
Rear view camera ...................217
Rear cross traffic alert .............219
Traffic sign assistant ................220
Lane keep assist .....................224
Fuel ............................................ 227
Fuel for petrol engines .............227Fuel for diesel engines ............228
Refuelling ................................ 229
Trailer hitch ................................ 231
General information .................231
Driving characteristics and towing tips .............................. 231
Trailer towing ........................... 231
Towing equipment ...................232
Trailer stability assist ...............234
166Driving and operatingA warning message appears when
exhaust filter is full. Start cleaning
process as soon as possible.
A warning message also appears
when exhaust filter has reached the
maximum filling level. Start cleaning
process immediately to avoid
damage to the engine.
Activate self-cleaning process
To activate cleaning process,
continue driving, keep engine speed
above 2000 rpm. Shift down if
necessary. Exhaust filter cleaning is
then started.
Cleaning process is completed more
quickly at high engine speeds and
loads.
Keep on driving until self-cleaning
operation is complete and the display message disappears.Caution
If possible, do not interrupt
cleaning process. Drive until
cleaning is completed to avoid the need for service or repair by a
workshop.
Cleaning process not possible
If cleaning is not possible for anyreason, control indicator Z
illuminates and a warning message
appears in the Driver Information
Centre. Engine power may be
reduced. Seek the assistance of a
workshop immediately.
Catalytic converter
The catalytic converter reduces the
amount of harmful substances in the
exhaust gases.
Caution
Fuel grades other than those listed on pages 3 227, 3 291 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.
Driving and operating167AdBlue
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.
The typical AdBlue consumption is
approx. 2 l per 1000 km , but can also
be higher depending on driving
behaviour (e.g. high load or towing).
AdBlue tank The AdBlue tank level can be found in the display menu.
Level warnings
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 is AdBlue
Range: 2400 km .
This warning will show up once briefly with the calculated range. Driving is
possible without any restrictions.
The next warning level is entered with
a range below 1750 km. The
message with the current range will always be displayed when ignition is
switched on and needs to be
confirmed 3 112 . Refill AdBlue before
entering the next warning level.
At an AdBlue range below 900 km,
the following warning messages are
alternately displayed and cannot be
dismissed:
● AdBlue Low Refill Now
● Engine Restart Prevented in
900 km .
Additionally, control indicator Y
flashes continuously.
Note
In case of high AdBlue consumption,
the Driver Information Centre may
display this warning without the
previous warning stages.
Driving and operating175If a service message is displayed in
the Driver Information Centre, the
system may have limited functionality
(or be completely disabled in some
cases, i.e. the vehicle switches to
Front-wheel drive). Seek the
assistance of a workshop.
Towing the vehicle 3 277.Brakes
The brake system comprises twoindependent 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 beforecontinuing 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 3 107.
Active emergency braking 3 200.
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.
After starting off, the system performs a self-test which may be audible.
Control indicator u 3 108.
Adaptive brake light During full braking, all three brake
lights flash for the duration of ABS
control.
192Driving and operatingDriver's attention● Use adaptive cruise control carefully on bends or mountain
roads, as it can lose the vehicle
ahead and needs time to detect it again.
● Do not use the system on slippery roads as it can create
rapid changes in tyre traction
(wheel spinning), so that you
could lose control of the vehicle.
● Do not use adaptive cruise control during rain, snow or
heavy dirt, as the radar sensor
can be covered by a water film,
dust, ice or snow. This reduces or suppresses completely the
visibility. In case of sensor
blockage, clean the sensor
cover.System limits9 Warning
The system's automatic brake
force does not permit hard braking and the braking level may not be
sufficient to avoid a collision.
● After a sudden lane change, the system needs a certain time to
detect the next preceding
vehicle. So if a new vehicle is
detected, the system may
accelerate instead of braking.
● Adaptive cruise control does ignore the oncoming traffic.
● Adaptive cruise control does not consider pedestrians and
animals for braking and driving
off.
● Adaptive cruise control considers
stopped vehicles only at low
speed.
● Do not use adaptive cruise control when towing a trailer.
● Do not use adaptive cruise control on roads with an incline ofmore than 10%.
Bends
The adaptive cruise control calculates
a predicted path based on the
centrifugal force. This predicted path
considers the current bend
characteristic, but cannot consider a
future bend change. The system may lose the current vehicle ahead or
consider a vehicle which is not in the
actual lane. This can happen when
entering or exiting a bend or if the
bend gets stronger or weaker. The
camera applies a certain correction
based on the detectable lane
markings. The control indicator A will
extinguish, if a vehicle ahead is no longer detected.
Driving and operating2059Warning
Front pedestrian braking may alert
or automatically brake the vehicle
suddenly in situations where it is
unexpected and undesired. It
could falsely alert or brake for
objects similar in shape or size to
pedestrians, including shadows.
This is normal operation and the
vehicle does not need a service.
To override Automatic braking,
firmly depress the accelerator
pedal, if it is safe to do so.
9 Warning
Using the Front pedestrian braking
system while towing a trailer couldcause loss of vehicle control and
crash. Turn the system to Alert or
Off in the vehicle personalisation
when towing a trailer.
Vehicle personalisation 3 124.
System limitations
In the following cases, front
pedestrian protection may not detect
a pedestrian ahead or sensor
performance is limited:
● Vehicle speed is out of range from 8 km/h to 80 km/h in forwardgear.
● The distance to an pedestrian ahead is more than 40 m.
● Driving on winding or hilly roads.
● During nighttime driving.
● Weather limits visibility, such as fog, rain, or snow.
● The sensor in the windscreen is blocked by snow, ice, slush, mud,dirt, windscreen damage or
affected by foreign items, e.g.
stickers.
Parking assist
General information When the trailer hitch is attached,
change the configuration settings in
the vehicle personalisation menu in
the Info Display.Vehicle personalisation 3 124.
When attaching a trailer or bike
carrier to the trailer hitch, the parking
assist is deactivated.
Front-rear parking assist9 Warning
The driver bears full responsibility
for the parking manoeuvre.
Always check the surrounding
area when driving backwards or
forwards while using parking
assist system.
The front-rear parking assist
measures the distance between the vehicle and obstacles in front and
behind the vehicle. It informs and
warns the driver by giving acoustic
signals and display indication.
It uses two different acoustic warning
signals for the front and rear
monitoring areas, each with a
different tone frequency.