
X
Select symbol ?using the Audio 20/
COMAND controller, see the Audio 20/
COMAND Online operating instructions.
The "Coupling up a trailer" function is selec- ted. The distance specifications now only
apply to objects that are at the same level
as the ball coupling.
X Reverse carefully, making sure that trailer
drawbar locating aid ;points approx-
imately in the direction of trailer drawbar
=.
X Reverse carefully until trailer drawbar =
reaches red guide line.
The distance between the trailer drawbar
and the red guide line is now approximately 0.30 m.
X Couple up the trailer (Y page 287).
Wide-angle function :
Symbol for the wide-angle view function
; Own vehicle
= PARKTRONIC warning displays
You can also use the reversing camera to
select a wide-angle view.
When PARKTRONIC is operational
(Y page 241), a symbol for your own vehicle
appears in the Audio 20/COMAND Online
display. If the PARKTRONIC warning displays
are active, warning displays =light up in the
Audio 20/COMAND Online display in yellow
or red respectively. Object detection The reversing camera helps detect moving
and stationary objects. If an object (person,
vehicle or other obstacle) is detected, this
object is marked with a bar. Objects located
some distance from the vehicle away are
marked with a yellow bar. If the distance to
the object is very small, the bar is displayed in red.
Object detection only works in full screen
mode.
To ensure that you can use the function, it
must be switched on in Audio 20/COMAND
Online, see the separate operating instruc-
tions. 360° camera (surround view)
General notes The 360° camera is a camera system that
consists of four cameras.
The system evaluates images from the fol-
lowing cameras:
R reversing camera
R front camera
R two side cameras in the exterior mirrors
The cameras cover the immediate surround-
ings of the vehicle. The system assists you,
e.g. when parking or at exits with reduced
visibility.
You can show pictures from the 360° camera in full-screen mode or in seven different split-
screen views on the COMAND/Audio 20 dis- play. A split-screen view also includes a top
view of the vehicle. This view is calculated
from the data supplied by the installed cam-
eras (virtual camera).
The seven split-screen views are:
R top view and image from the reversing cam-
era (130° viewing angle)
R top view and image from the front camera
(130° viewing angle without displaying the
maximum steering wheel angle)
R top view and enlarged rear view Driving systems
253Driving and parking Z

R
top view and enlarged front view
R top view and trailer view (vehicles with
trailer tow hitch)
R top view and images from the rear-facing
side cameras (rear wheel view)
R top view and images from the forward-
facing side cameras (front wheel view)
When the function is active and you shift the
transmission from Dor Rto N, the guide lines
in the COMAND/Audio 20 display are hidden.
When you change between transmission
positions Dand R, you see the previously
selected front or rear view.
Important safety notes The 360° camera is only an aid and may show
a distorted view of obstacles, show them
incorrectly or not at all. The 360° camera is
not a substitute for attentive driving.
The responsibility for safe manoeuvring and
parking remains with you. Make sure that
there are no persons, animals or objects in
range while manoeuvring and parking.
You are always responsible for safety and
must always pay attention to your surround-
ings when parking and manoeuvring. This
applies to the areas behind, in front of and
beside the vehicle. You could otherwise
endanger yourself and others.
The 360° camera will not function or will
function only in a limited manner:
R if the doors are open
R if the exterior mirrors are folded in
R if the boot lid is open
R in heavy rain, snow or fog
R at night or in very dark places
R if the cameras are exposed to very bright
light
R if the area is lit by fluorescent bulbs or LED
lighting (the display may flicker)
R if the camera lenses mist up, e.g. when
driving into a heated garage in winter, caus- ing a rapid change in temperature R
if the camera lenses are dirty or covered
R if the vehicle components in which the
cameras are fitted are damaged. In this
event, have the camera position and setting
checked at a qualified specialist workshop.
Do not use the 360° camera in this case. You could otherwise injure others or damage
objects when parking the vehicle.
Guide lines are always shown at road level.
In trailer mode, the guide lines are shown at
the level of the trailer tow hitch.
The camera in the rear area is protected by
means of a flap. This flap opens when the
360° camera is activated. Observe the notes on cleaning (Y page 405). For technical rea-
sons, the flap may remain open briefly after
the 360° camera has been deactivated.
Activation conditions The 360° camera image can be displayed if:
R COMAND Online/Audio 20 is switched on,
see the Digital Owner's Manual
R the 360° camera 360° camera function is switched on
i If the 360° camera is activated at speeds
above 30 km/h, a warning message
appears.
The warning message disappears if:
R the vehicle's speed falls below 30 km/h.
The 360° camera is then activated.
R the message is confirmed with the %
button. 254
Driving systemsDriving an
d parking

apply to objects that are at the same level
as the ball coupling.
X Reverse carefully, making sure trailer draw-
bar locating aid ;points approximately in
the direction of the trailer drawbar.
X Reverse carefully until the trailer drawbar
reaches red guide line ?.
The distance between the trailer drawbar
and the red guide line is now approximately 0.30 m.
X Couple up the trailer (Y page 287).
The lines are shown at the level of the trailer
tow hitch.
Wide-angle function :
Symbol for the full-screen setting with the
reversing camera image
; Own vehicle
= PARKTRONIC warning displays
If the vehicle is equipped with PARKTRONIC
and the function is activated (Y page 242),
warning displays =in the COMAND/Audio
20 display are also active or light up accord-
ingly.
PARKTRONIC appears as follows:
R as red or yellow brackets around the vehi-
cle symbol in top view in split-screen mode
or
R at the bottom right as red or yellow brack-
ets around the vehicle symbol in full-screen mode
i Full-screen mode can also be selected as
front view. Select this view when you are driving out of an
exit and the view of crossing traffic is restric-
ted, for example.
i For split-screen view, select the
%
symbol in the display, then confirm with the
controller.
Object detection The 360° camera helps detect moving and
stationary objects. If an object (person, vehi- cle, other obstacle) is detected, this object ismarked with a bar. Objects located some dis-
tance from the vehicle away are marked with a yellow bar. If the distance to the object is
very small, the bar is displayed in red.
Object detection only functions in both full-
screen modes.
In order to use the function, it must be
switched on in COMAND Online/Audio 20;
see the separate operating instructions.
Stopping the 360° camera display The 360° camera display is stopped:
R
if you select transmission position P, or
R as soon as you drive at moderate speeds
The view which was active before the 360°
camera was displayed appears in the
COMAND/Audio 20 display. You can also
stop the 360° camera display from split-
screen view by selecting the %symbol in
the display and then confirming with the con- troller. ATTENTION ASSIST
General notes ATTENTION ASSIST helps you during long,
monotonous journeys such as on motorways
and trunk roads. It is active in the 60 km/h to
200 km/h range. If ATTENTION ASSIST
detects typical indicators of fatigue or
increasing lapses in concentration on the part of the driver, it suggests taking a break. 258
Driving systemsDriving and parking

the case if there are vehicles at the edge of
their lane nearest your vehicle.
Due to the nature of the system:
R warnings may be issued in error when driv-
ing close to crash barriers or similar solid
lane borders
R warnings may be interrupted when driving
alongside long vehicles, for example lor-
ries, for a prolonged time
The two radar sensors for Blind Spot Assist
are integrated into the sides of the rear
bumper. Make sure that the bumper is free of dirt, ice or slush in the vicinity of the sensors.
The sensors must not be covered, for exam-
ple by cycle racks or overhanging loads. Fol-
lowing a severe impact or in the event of dam- age to the bumpers, have the function of the
sensors checked at a qualified specialist
workshop. Blind Spot Assist may otherwise
not work properly.
Warning display :
Warning display
Blind Spot Assist is not active at speeds below approximately 30 km/h. Vehicles in the mon-itoring range are then not indicated.
If a vehicle is detected within the monitoring
range of Blind Spot Assist at speeds above
30 km/h, warning lamp :on the corre-
sponding side lights up red. This warning lamp
always lights up when a vehicle enters the
blind spot monitoring range from behind or
from the side. When you overtake a vehicle,
the warning only occurs if the difference in
speed is less than 12 km/h. If you select the reverse gear, Blind Spot
Assist is not operational.
The brightness of the warning lamps is auto-
matically adapted to the brightness of the
surroundings.
Collision warning
If a vehicle is detected in the monitoring range
of Blind Spot Assist and you switch on the
corresponding turn signal, a double warning
tone sounds. Red warning lamp :flashes. If
the turn signal remains on, detected vehicles
are indicated by the flashing of red warning
lamp :. There are no further warning tones.
Activating Blind Spot Assist X Make sure that Blind Spot Assist
(Y page 311) is activated in the on-board
computer.
X Turn the key to position 2in the ignition
lock.
Warning lamps :in the exterior mirrors
light up red until the engine is started.
Display in the assistance graphic When Blind Spot Assist is activated, grey
radar waves propagating backwards appear
next to the vehicle in the assistance display in
the multifunction display. Above a speed of
30 km/h, the colour of the radar waves in the
assistance display changes to green ;. Blind
Spot Assist is then ready for use.
Towing a trailer
If you couple up a trailer, make sure that you
have correctly established the electrical con- nection. This can be accomplished by check- 264
Driving systemsDriving an
d parking

ing the trailer lighting. Blind Spot Assist is
then deactivated. The Blind Spot Assist
Blind Spot Assist
not
not available
available when
whentowing
towing a
atrailer
trailer
See Owner's Manual
See Owner's Manual message appears in
the multifunction display.
Lane Keeping Assist General notes
Lane Keeping Assist monitors the area in
front of your vehicle by means of camera :
at the top of the windscreen. Lane Keeping
Assist detects lane markings on the road and
can warn you before you leave your lane unin-
tentionally.
This function is available within a speed range between 60 km/h and 200 km/h.
A warning may be given if a front wheel
passes over a lane marking. It will warn you by
means of intermittent vibration through the
steering wheel for up to 1.5 seconds.
Important safety notes G
WARNING
Lane Keeping Assist cannot always clearly
identify lane markings.
In these cases, Lane Keeping Assist may:
R give an unnecessary warning
R not give a warning
There is a risk of an accident.
Always pay particular attention to the traffic
situation and keep in lane, especially if Lane
Keeping Assist alerts you. G
WARNING
The Lane Keeping Assist warning does not
return the vehicle to the original lane. There is a risk of an accident.
Always steer, apply the brakes or accelerate
the vehicle yourself, especially if Lane Keep-
ing Assist alerts you.
If you fail to adapt your driving style, Lane
Keeping Assist can neither reduce the risk of
an accident nor override the laws of physics. Lane Keeping Assist cannot take into account
road, weather or traffic conditions. Lane
Keeping Assist is only an aid. You are respon- sible for the distance to the vehicle in front,
for vehicle speed, for braking in good time,
and for staying in lane.
Lane Keeping Assist does not keep your vehi-
cle in its lane.
The system may be impaired or may not func-
tion if:
R there is poor visibility, e.g. due to insuffi-
cient illumination of the road, or due to
snow, rain, fog or spray
R there is glare, e.g. from oncoming traffic,
the sun or reflection from other vehicles
(e.g. if the road surface is wet)
R the windscreen is dirty, misted up, dam-
aged or covered, for instance by a sticker,
in the vicinity of the camera
R no or several, unclear lane markings are
present for one lane, e.g. in a construction
area
R the lane markings are worn away, dark or
covered up, e.g. by dirt or snow
R the distance to the vehicle in front is too
small and the lane markings thus cannot be
detected
R the lane markings change quickly, e.g.
lanes branch off, cross one another or
merge
R the road is narrow and winding
R there are highly variable shade conditions
on the road Driving systems
265Driving and parking Z

Activating Lane Keeping Assist
X
Press button ;.
Indicator lamp :lights up. The Lane
Lane
Keeping Assist on
Keeping Assist onmessage appears in
the multifunction display. If all conditions
have been satisfied, there may be a warn-
ing.
If you drive at speeds above 60 km/h and
lane markings are detected, the lines in the assistance graphic display (Y page 308)
are shown in green. Lane Keeping Assist is
ready for use.
X To deactivate: press button;.
Indicator lamp :goes out. Lane Keeping
Assist is deactivated. The Lane Keeping
Lane Keeping
Assist off Assist off message appears in the multi-
function display.
Selecting Standard or Adaptive setting
X In the Assistance
Assistance menu on the on-board
computer, select the Lane Keeping
Lane Keeping
Assist
Assist function (Y page 311).
X Select Standard
Standard orAdaptive
Adaptive.
Standard
When Standard Standard is selected, no warning vibra-
tion occurs if:
R you have switched on the turn signals. In
this case, the warnings are suppressed for
a certain period of time.
R a driving safety system intervenes, such as
ABS, BAS or ESP ®
. Adaptive
When Adaptive
Adaptive is selected, no warning vibra-
tion occurs if:
R you have switched on the turn signals. In
this case, the warnings are suppressed for
a certain period of time.
R a driving safety system intervenes, such as
ABS, BAS or ESP ®
.
R you accelerate hard, e.g. kickdown.
R you brake hard.
R you steer actively, e.g. swerve to avoid an
obstacle or change lane quickly.
R you cut the corner on a sharp bend.
In order that you are warned only when nec-
essary and in good time if you cross the lane marking, the system detects certain condi-
tions and warns you accordingly.
The warning vibration occurs earlier if:
R you approach the outer lane marking on a
bend
R the road has very wide lanes, e.g. a motor-
way
R the system detects solid lane markings
The warning vibration occurs later if:
R the road has narrow lanes
R you cut the corner on a bend Driving Assistance PLUS package
General notes The Active Driving Assistance PLUS package
consists of DISTRONIC PLUS (Y
page 226),
Active Blind Spot Assist (Y page 266) and
Active Lane Keeping Assist (Y page 269).
Active Blind Spot Assist General notes
Active Blind Spot Assist monitors the areas
on either side of the vehicle that are not visi-
ble to the driver with two lateral, rear-facing
radar sensors. A warning display in the exte-
rior mirrors draws your attention to vehicles 266
Driving systemsDriving and pa
rking

Due to the nature of the system:
R warnings may be issued in error when driv-
ing close to crash barriers or similar solid
lane borders
R warnings may be interrupted when driving
alongside particularly long vehicles, for
example lorries, for a prolonged time
Warning display :
Warning display
Active Blind Spot Assist is not operational at
speeds below approximately 30 km/h. Vehi-
cles in the monitoring range are then not indi-
cated.
If a vehicle is detected within the monitoring
range of Blind Spot Assist at speeds above
30 km/h, warning lamp :on the corre-
sponding side lights up red. This warning lamp
always lights up when a vehicle enters the
blind spot monitoring range from behind or
from the side. When you overtake a vehicle,
the warning only occurs if the difference in
speed is less than 12 km/h.
If you select the reverse gear, Active Blind
Spot Assist is not operational.
The brightness of the warning lamps is auto-
matically adapted to the brightness of the
surroundings. When Active Blind Spot Assist is activated,
grey radar waves propagating backwards
appear next to the vehicle in the assistance
display in the multifunction display. Above a
speed of 30 km/h, the colour of the radar
waves in the assistance display changes to
green ;. Active Blind Spot Assist is then
ready for use.
Visual and acoustic collision warning
If you switch on the turn signals to change
lanes and a vehicle is detected in the side
monitoring range, you receive a visual and
acoustic collision warning. You will then hear a double warning tone and red warning
lamp :flashes. If the turn signal remains on,
detected vehicles are indicated by the flash-
ing of red warning lamp :. There are no fur-
ther warning tones.
Course-correcting brake application
If Active Blind Spot Assist detects a risk of a
side impact in the monitoring range, a course- correcting brake application is carried out.
This is designed to help you avoid a collision. G
WARNING
A course-correcting brake application cannot always prevent a collision. There is a risk of an
accident.
Always steer, brake or accelerate yourself,
especially if Active Blind Spot Assist warns
you or makes a course-correcting brake appli-
cation. Always maintain a safe distance at the sides. 268
Driving systemsDriving an
d parking

If a course-correcting brake application
occurs, red warning lamp :flashes in the
exterior mirror and a dual warning tone
sounds. In addition, display ;underlining
the danger of a side collision appears in the
multifunction display.
In very rare cases, the system may make an
inappropriate brake application. A course-
correcting brake application may be interrup-
ted at any time if you steer slightly in the
opposite direction or accelerate.
The course-correcting brake application is
available in the speed range between
30 km/h and 200 km/h.
Either a course-correcting brake application
appropriate to the driving situation, or none at all, may occur if:
R there are vehicles or obstacles, e.g. crash
barriers, on both sides of your vehicle
R a vehicle approaches too closely on the
side
R you have adopted a sporty driving style with
high cornering speeds
R you clearly brake or accelerate
R a driving safety system intervenes, such as
ESP ®
or PRE-SAFE ®
Brake
R ESP ®
is deactivated
R a loss of tyre pressure or a defective tyre is
detected Activating Active Blind Spot Assist
X Make sure that Active Blind Spot Assist is
activated in the on-board computer
(Y page 311).
X Turn the key to position 2in the ignition
lock.
Warning lamps :in the exterior mirrors
light up red for approximately 1.5 seconds. Grey radar waves propagating backwards
appear next to the vehicle in the assistance
display in the multifunction display.
Towing a trailer
If you couple up a trailer, make sure that you have correctly established the electrical con-
nection. This can be accomplished by check- ing the trailer lighting. Active Blind Spot Assist
is then deactivated. The radar waves next to
the vehicle are hidden in the assistance dis-
play. The Active
Active Blind BlindSpot
SpotAssist
Assist not
not
available
available when
whentowing
towing a
atrailer
trailer See
See
Owner's Manual
Owner's Manual message appears in the
multifunction display.
Active Lane Keeping Assist General notes
Active Lane Keeping Assist monitors the area
in front of your vehicle by means of camera
system :at the top of the windscreen. Var-
ious different areas to the front, rear and side
of your vehicle are also monitored with the aid
of the radar sensor system. Active Lane Keep-
ing Assist detects lane markings on the road
and can warn you before you leave your lane
unintentionally. If you do not react to the Driving systems
269Driving and parking Z