
Driving and operating255pedal to override the automatic
braking if the situation and the
surroundings permit.
In the following cases, active
emergency braking performance is limited:
● driving on winding or hilly roads
● detecting all vehicles, especially vehicles with a trailer, tractors,
muddy vehicles, etc.
● detecting a vehicle when weather
limits visibility, such as in fog,
rain, or snow
● driving during nighttime
● sensor in the windscreen or radar
unit behind the front bumper
blocked by snow, ice, slush, mud, dirt, etc.
● windscreen damaged or affected
by foreign objects, e.g. stickers
Complete attention is always required
while driving, and you should be
ready to take action and apply the
brakes and / or steer the vehicle to
avoid crashes.Fault
In case the system requires a service,
a message is displayed in the Driver
Information Centre.
Additionally, warning lights l and
j illuminate at the same time.
When the system detects that its
function is not available, warning light l or j illuminates and stays on.
Additionally, a message in the Driver Information Centre appears. The
system may be temporarily disrupted
(for example: radar or camera
obscured by dirt, mud, snow etc.). In
this case, park the vehicle and switch
off the engine. Clean the windscreen
area around the camera and the
detection zone of the radar in the front bumper. When the warning lights and
messages still appear after starting
the vehicle again, seek the
assistance of a workshop.Parking assist9 Warning
It is the driver who bears full
responsibility for the parking
manoeuvre.
Always check the surrounding
area while reversing and using the rear parking assist system.
The parking assist measures the
distance between the vehicle and
obstacles behind and, if available, in
front of the vehicle. It informs and
warns the driver by giving acoustic
signals.
The system consists of four ultrasonic parking sensors in the rear bumper
and, if available, four ultrasonic
parking sensors in the front bumper.

258Driving and operatingDeactivation
To deactivate the system, press .
with the ignition on. The LED in the
button illuminates when deactivated.
To reactivate the system, press .
again. The LED in the button
extinguishes.
Functionality
When the system detects a vehicle in the side blind zone while driving
forwards, an LED will illuminate in the
relevant exterior mirror.
The LED comes on immediately when being passed.
The LED comes on after a delay when
passing another vehicle slowly.
The LED flashes when the turn lights
are activated and a vehicle is
detected.
Operation conditions
The following conditions must be
fulfilled for proper operation:
● all vehicles are moving in the same direction and in adjacent
lanes
● the speed of your vehicle is between 30 km/h and 140 km/h
● the traffic flow is normal
● driving on a straight or slightly curved road
● the vehicle is not pulling a trailer
● the sensors are not covered by mud, ice or snow
● the warning zones in the exterior mirrors or the detection zones in
front and rear bumper are not
covered
No alert will be given in the following
situations:
● in the presence of non-moving objects, e.g. parked vehicles,
barriers, street lamps, road signs
● with vehicles moving in the opposite direction

260Driving and operatingInfo Display
In vehicles without interior mirror
display, the rear view camera screen
is shown on the Info Display.
Trajectory lane display image (1)
Depending on version, the trajectory
lane (1) of the vehicle is shown in blue
on the Info Display. It shows the path of the vehicle in accordance with the
steering angle.
Fixed lane display image (2)
The fixed lane display (2) shows the
path of the vehicle if the wheels are
kept straight.
Guide lines (3, 4, 5) are used together
with the fixed lane display (2) and
indicate the distance behind the
vehicle.The guide line intervals are as
follows:3 (red):30 cm4 (yellow):70 cm5 (green):150 cmSettings
Settings, e.g. brightness, can be set
via the Infotainment system. Refer to
Infotainment manual for further
information.
Deactivation
The camera is deactivated after a
delay if reverse gear is not engaged.
Fault
The rear view camera may not
operate properly when:
● the surrounding is dark
● the sun or the beam of headlights
is shining directly into the camera lens
● ice, snow, mud, or anything else covers the camera lens. Clean
the lens, rinse it with water, and
wipe it with a soft cloth

Driving and operating261● the rear doors are not closedcorrectly
● the vehicle had a rear-end accident
● there are extreme temperature changes
Lane departure warning The lane departure warning system
uses a front camera to observe the
lane markings between which the
vehicle is driving. The system detects
lane changes and warns the driver in
the event of an unintended lane
change via visual and acoustic
signals.
Criteria for the detection of an
unintended lane change are:
● no operation of turn lights
● no active steering
If the driver is performing these
actions, no warning will be issued.Activation
The lane departure warning system is activated by pressing Q in the centre
console. A corresponding message
appears in the Driver Information
Centre to indicate that the system is
switched on.
When Q 3 101 illuminates in the
Driver Information Centre, the system is ready to operate 3 105.
Q extinguishes when the system is
not ready to warn the driver.
The system is only operable at
vehicle speeds above 60 km/h and if
lane markings are available and
detected.
If the turn lights are not operated
when changing lanes, i.e. an
unintended lane change is detected,
control indicator Q flashes together
with a warning chime to alert the
driver.

262Driving and operatingDeactivation
The system is deactivated by
pressing Q. A corresponding
message appears in the Driver
Information Centre to indicate that the
system is switched off.
At speeds below 60 km/h the system is inoperable.
Operation hints
The lane departure warning system
may not operate properly when:
● The windscreen is not clean.● There are adverse environmental
conditions like heavy rain, snow,
direct sunlight or shadows.
● Lane departure is very fast.
● Acceleration is very strong.
● Bends are tight.
● Driving continuously on a line.
The system cannot operate when no
lane marking is detected.Fault
In the event of a fault in the system, a warning message appears in the
Driver Information Centre (possibly in
combination with control indicator
j ).
Seek the assistance of a workshop.
Driver Information Centre 3 105.Fuel
Fuel for diesel engines The Diesel engines are compatible
with bio-fuels that conform to current and future European standards and
can be obtained from filling stations:
Diesel fuel that meets standard
EN590 mixed with a biofuel that
meets standard EN14214 (possibly
containing up to 7% Fatty Acid Methyl
Ester).

264Driving and operating9Danger
Fuel is flammable and explosive.
No smoking. No naked flames or
sparks.
If you can smell fuel in your
vehicle, have the cause of this
remedied immediately by a
workshop.
A label with symbols at the fuel filler
flap is indicating the allowed fuel
types. In Europe the pump nozzles of the filling stations are marked with
these symbols. Refuel only the
allowed fuel type.
Caution
In case of misfuelling, do not
switch on ignition.
The fuel tank filler neck with bayonet
cap is located on the left front side of
the vehicle.
The fuel filler flap can only be opened
if the vehicle is unlocked and the door is opened. Open the fuel filler flap by
hand.
9 Danger
Vehicles with stop-start system:
The engine must be switched off
and the ignition key removed, to
avoid risk of engine being
restarted automatically by the
system.
Capacities 3 317.
Depending on vehicle, unlock fuel
filler cap using the key.
To open, turn the cap slowly
anticlockwise.
The fuel filler cap can be hung on the lower hook of the fuel filler flap.
Place the nozzle in straight position to
the filler neck and press with slight
force to insert.
After the automatic cut-off, the tank
can be topped up by operating the
pump nozzle a maximum of two more times.Caution
Wipe off any overflowing fuel
immediately.
To close, turn the fuel filler cap
clockwise.
Close the fuel filler flap.
Fuel filler cap Only use genuine fuel filler caps.Diesel-engined vehicles have special
fuel filler caps.

Driving and operating265Trailer 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 80 km/h 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 3 317.
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 m above sea level.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 m 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
3 316.
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.

266Driving 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) can be exceeded by 15%. If the permissible rear axle
load is exceeded, a maximum speed
of 80 km/h applies and the tyre
pressure must be increased by 20
kPA / 0.2 bar.
Towing equipment For vehicles fitted with towing
equipment, when connected to a
trailer the pitch of the audible warning
changes upon operation of the turn
lights.
The pitch of the audible warning will
change if a turn 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 is a function of
the Electronic Stability Control (ESC)
3 248.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.