
PARKTRONIC is still available. You can take over
the steering, before the vehicle has exited the
parking space completely. This is useful, for
example when you recognize that it is already
possible to pull out of the parking space.
Canceling Active Parking Assist
XStop the movement of the multifunction
steering wheel or steer yourself.
Active Parking Assist will be canceled at once.
ThePark Assist Canceled
message
appears in the multifunction display.
or
XPress the PARKTRONIC button (Ypage 201).
PARKTRONIC is switched off and Active Park-
ing Assist is immediately canceled. The Park
Assist Canceledmessage appears in the
multifunction display.
Active Parking Assist is canceled automatically
if:
Rthe electric parking brake is engaged
Rtransmission position Pis selected
Rparking using Active Parking Assist is no lon-
ger possible
Ryou are driving faster than 6 mph (10 km/ h)
Ra wheel spins, ESP®intervenes or fails. The
÷ warning lamp lights up in the instrument
cluster
A warning tone sounds. The parking symbol dis-
appears and the multifunction display shows the
Park Assist Canceled
message.
When Active Parking Assist is canceled, you
must steer and brake again yourself.
If a system malfunction occurs, the vehicle is
braked to a standstill. To drive on, depress the
accelerator again.
Rear view camera
General notes
Rear view camera :is an optical parking and
maneuvering aid. It shows the area behind your
vehicle with guide lines in the multimedia sys-
tem.
The area behind the vehicle is displayed as a
mirror image, as in the rear view mirror.
iThe text shown in the multimedia system
depends on the language setting. The follow-
ing are examples of rear view camera displays
in the multimedia system.
Important safety notes
The rear view camera is only an aid. It is not a
replacement for your attention to your immedi-
ate surroundings. You are always responsible
for safe maneuvering and parking. When maneu-
vering or parking, make sure that there are no
persons, animals or objects in the area in which
you are maneuvering.
Under the following circumstances, the rear
view camera will not function, or will function in
a limited manner:
Rif the trunk lid is open
Rin heavy rain, snow or fog
Rat night or in very dark places
Rif the camera is exposed to very bright light
Rif the area is lit by fluorescent bulbs or LED
lighting (the display may flicker)
Rif there is a sudden change in temperature,
e.g. when driving into a heated garage in win- ter
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"Wide-angle" function
:Symbol for the wide-angle view function
;Own vehicle
=PARKTRONIC warning displays
You can also use the rear view camera to select
a wide-angle view.
When PARKTRONIC is operational (
Ypage 200),
a symbol for your own vehicle appears in the
display of the multimedia system. If the
PARKTRONIC warning displays are active, warn-
ing displays =light up in the multimedia system
display in yellow or red respectively.
Object detection
The rear view 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 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 works in wide-angle view.
To ensure that you can use the function, it must
be switched on in the multimedia system (see
the separate operating instructions).
360° camera
General notes
The 360° camera is a system consisting of four
cameras.
The system processes images from the follow-
ing cameras:
RRear view camera
RFront camera
RTwo side cameras in the exterior mirrors The cameras capture the immediate surround-
ings of the vehicle. The system supports you, for
example when parking or if vision is restricted at
an exit.
You can show images from the 360° camera in
full-screen mode or in six different split-screen
views on the multimedia system. A split-screen
view also includes a top view of the vehicle. This
view is calculated from the data supplied by the
installed cameras (virtual camera).
The six split-screen views are:
Rtop view and picture from the rear view cam-
era (130° viewing angle)
Rtop view and image from the front camera
(130° viewing angle without displaying the
maximum steering wheel angle)
Rtop view and enlarged rear view
Rtop view and enlarged front view
Rtop view and images from the rear-facing side
cameras (rear wheel view)
Rtop 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
are hidden in the multimedia system.
When you change between transmission posi-
tions Dand R, you see the previously selected
front or rear view.
Distances measured by PARKTRONIC will also
be optically displayed:
Rin split screen view as red or yellow brackets around the vehicle icon in the top view, or
Rat the bottom right as red or yellow brackets
around the vehicle symbol in full-screen mode
The line thickness and color of the brackets
show how far the vehicle is from an object.
Ryellow brackets with thin lines: PARKTRONIC
is active
Ryellow brackets with normal lines: an object is present in close range of the vehicle
Rred line: an object is present in the immediate
close range of the vehicle
Important safety notes
The 360°camera is only an aid and may show a
distorted view of obstacles, show them incor-
rectly or not at all. The 360°camera is not a
substitute for attentive driving.
You are always responsible for safe maneuver-
ing and parking. When maneuvering or parking,
210Driving systems
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make sure that there are no persons, animals or
objects in the area in which you are maneuver-
ing.
You are always responsible for safety, and must
always pay attention to your surroundings when parking and maneuvering. This applies to the
areas behind, in front of and beside the vehicle.
You could otherwise endanger yourself and oth-
ers.
The 360° camera will not function or will func-
tion in a limited manner:
Rif the doors are open
Rif the exterior mirrors are folded in
Rif the trunk lid is open
Rin heavy rain, snow or fog
Rat night or in very dark places
Rif the cameras are exposed to very bright light
Rif the area is lit by fluorescent bulbs or LED
lighting (the display may flicker)
Rif the camera lenses fog up, e.g. when driving
into a heated garage in winter, causing a rapid
change in temperature
Rif the camera lenses are dirty or covered
Rif the vehicle components in which the cam-
eras are installed 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
can otherwise injure others or cause damage to
objects or the vehicle.
The guide lines in the COMAND display show the
distances to your vehicle. The distances only
apply to road level.
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 (
Ypage 339). For technical reasons,
the flap may remain open briefly after the 360°
camera has been deactivated.
On vehicles with height-adjustable chassis,
depending on technical conditions, leaving the
standard height can result in:
Rinaccuracies in the guide lines
Rinaccuracies in the display of generated
images (top view)
Activation conditions
The 360° camera image can be displayed if:
Rthe multimedia system is switched on
Rthe 360° Camerafunction is switched on
iIf you are driving faster than at a moderate
speed and you turn on the 360° camera, a
warning message appears.
The warning message disappears if:
Ryou are again driving at a moderate speed
The 360° camera is then activated.
Rthe message is confirmed with the %
button.
Switching the 360° camera on and off
using the button
XTo switch on: press button:.
Depending on whether position Dor Ris
engaged, the following is shown:
Ra split screen with top view and the image
from the front camera or
Ra split screen with top view and the image
from the rear view camera
XTo switch off: press button:.
Activating the 360° camera using
reverse gear
The 360° camera images can be automatically
displayed by engaging reverse gear.
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Z

The distance specifications only apply to
objects that are at ground level.
Top view with picture from the front cam-
era
:Symbol for the split screen setting with top
view and front camera image
;Yellow guide line at a distance of approx-
imately 13 ft (4.0 m) from the front of the
vehicle
=Yellow guide line for the vehicle width
including the exterior mirrors, for current
steering wheel angle (dynamic)
?Yellow lane marking tires at current steering
wheel angle (dynamic)
ARed guide line at a distance of approximately
12 in (0.30 m) from the front of the vehicle
BYellow guide line at a distance of approx-
imately 3 ft (1.0 m) from the front of the
vehicle
Top view and enlarged rear view
:Symbol for the split screen setting with top
view and rear view camera image enlarged
;Red guide line at a distance of approximately
12 in (0.30 m)from the rear of the vehicle
This view assists you in estimating the distance
to the vehicle behind you.
iThis setting can also be selected as an
enlarged front view.
Top view with image from the side cam-
eras
:Symbol for the top view and forward-facing
side camera setting
;Yellow guide line for the vehicle width
including the exterior mirrors (right side of
vehicle)
=Yellow guide line for the vehicle width
including the exterior mirrors (left side of
vehicle)
iYou can also select the side camera setting
for the rear-facing view.
180° view
:Symbol for the full screen setting with rear
view camera image
;Own vehicle
=PARKTRONIC warning displays
i180° view 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 restricted,
for example.
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iIf you select the%symbol in the display
and confirm with the controller, the split-
screen view appears.
Exiting 360° camera display mode
The 360° camera display is stopped
Rwhen you select transmission position P, or
Rwhen you are driving at moderate speeds
The view which was active before the 360° cam- era was displayed appears in the Audio 20 or
COMAND display. You can also stop the 360°
camera display split-screen view by selecting
the % symbol in the display and then con-
firming with the COMAND controller.
ATTENTION ASSIST
General notes
ATTENTION ASSIST helps you during long,
monotonous journeys, such as on highways. It is
active in the 37 mph (60 km/h) to 125 mph
(200 km/h) range. If ATTENTION ASSIST
detects typical indicators of fatigue or increas-
ing lapses in concentration on the part of the
driver, it suggests taking a break.
Important safety notes
ATTENTION ASSIST is only an aid to the driver. It might not always recognize fatigue or increasing
inattentiveness in time or fail to recognize them
at all. The system is not a substitute for a well-
rested and attentive driver.
The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or not
occur at all:
Rif the length of the journey is less than approx-
imately 30 minutes
Rif the road condition is poor, e.g. if the surface
is uneven or if there are potholes
Rif there is a strong side wind
Rif you have adopted a sporty driving style with high cornering speeds or high rates of accel-
eration
Rif you are predominantly driving slower than
37 mph (60 km/h) or faster than 125 mph
(200 km/h)
Rif you are driving with the active Steer Assist
of DISTRONIC PLUS
Rif the time has been set incorrectly
Rin active driving situations, such as when youchange lanes or change your speed
The ATTENTION ASSIST tiredness assessment
is deleted and restarted when continuing the
journey, if:
Ryou switch off the engine
Ryou take off your seat belt and open the driv-
er's door, e.g. for a change of drivers or to
take a break
Displaying the attention level
You can have current status information dis-
played in the assistance menu (Ypage 247) of
the on-board computer.
XSelect the Assistance display for Attention
Assist using the on-board computer
(
Ypage 246).
The following information is displayed:
Rlength of the journey since the last break.
Rthe attention level determined by ATTENTION ASSIST ( Attention Level), displayed in a
bar display in five levels from high to low.
RIf ATTENTION ASSIST is unable to calculate
the attention level and cannot issue a warn-
ing, the System Suspended
message
appears. The bar display then changes the
display, e.g. if you are driving at a speed below
37 mph (60 km/h) or above 124 mph
(200 km/h).
Activating ATTENTION ASSIST
XActivate ATTENTION ASSIST using the on-
board computer (Ypage 248).
The system determines the attention level of
the driver depending on the setting selected:
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SelectionStandard: the sensitivity with which
the system determines the attention level is set
to normal.
Selection Sensitive
: the sensitivity is set
higher. The attention level detected by Attention
Assist is adapted accordingly and the driver is
warned earlier.
When ATTENTION ASSIST is deactivated, the
é symbol appears in the multifunction dis-
play in the assistance graphic display.
When ATTENTION ASSIST has been deactivated,
it is automatically reactivated after the engine
has been stopped. The sensitivity selected cor-
responds to the last selection activated (stand-
ard/sensitive).
Warning in the multifunction display
If fatigue or increasing lapses in concentration
are detected, a warning appears in the multi-
function display: ATTENTION ASSIST
Take aBreak!.
In addition to the message shown in the multi-
function display, you will then hear a warning
tone.
XIf necessary, take a break.
XConfirm the message by pressing the a
button on the steering wheel.
On long journeys, take regular breaks in good
time to allow yourself to rest properly. If you do
not take a break and ATTENTION ASSIST still
detects increasing lapses in concentration, you
will be warned again after 15 minutes at the
earliest. This will only happen if ATTEN-
TION ASSIST still detects typical indicators of
fatigue or increasing lapses in concentration.
If a warning is output in the multifunction dis-
play, a service station search is performed in
COMAND. You can select a service station and
navigation to this service station will then begin.
This function can be activated and deactivated
in COMAND.
Traffic Sign Assist
General notes
Traffic Sign Assist displays the maximum speed
permitted to the driver in the instrument cluster.
The data and general traffic regulations stored in
the navigation system are used to determine the
current speed limit. Traffic Sign Assist is a map-based system, and
for this reason, traffic signs put up temporarily
(e.g. near roadworks) are not detected.
If a traffic sign that is relevant to your vehicle is
passed, the display of the speed limits is upda-
ted.
Traffic signs with a restriction indicated by an
additional sign (e.g. in wet conditions) are also
shown.
The traffic signs are only displayed with the
restrictions if:
Rthe regulation must be observed with the
restriction, or
RTraffic Sign Assist is unable to determine
whether the restriction applies
If Traffic Sign Assist is unable to determine a
maximum permitted speed from any of the avail-
able sources, no speed limit is displayed in the
instrument cluster either.
Traffic Sign Assist is not available in all coun-
tries. In this case, symbol :is shown in the
assistance graphic display (
Ypage 246).
Important safety notes
Traffic Sign Assist is only an aid and is not always
able to correctly display speed limits. Traffic
signs always have priority over the Traffic Sign
Assist display.
The system may be either functionally impaired
or temporarily unavailable if the information in
the digital street map of the navigation system is
incorrect or out of date.
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Z

cycle racks or overhanging loads. Following a
severe impact or in the event of damage to the
bumpers, have the function of the radar sensors
checked at a qualified specialist workshop.
Blind Spot Assist may no longer work properly.
Monitoring area
In particular, the detection of obstacles can be
impaired if:
Rthere is dirt on the sensors or anything else
covering the sensors
Rthere is poor visibility, e.g. due to fog, heavy
rain, snow or spray
Rthere are narrow vehicles, e.g. motorcycles or
bicycles
Rthe road has very wide lanes
Rthe road has narrow lanes
Ryou are not driving in the middle of the lane
Rthere are barriers or similar lane borders
Vehicles in the monitoring range are then not
indicated.
Blind Spot Assist monitors the area up to 10 ft
(3 m) behind your vehicle and directly next to
your vehicle, as shown in the diagram.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may be
indicated, especially if the vehicles are not driv-
ing in the middle of their lane. This may be the
case if there are vehicles driving at the inner
edge of their lanes. Due to the nature of the system:
Rwarnings may be issued in error when driving
close to crash barriers or similar solid lane
borders.
Rthe warning is canceled when driving for an
extended period next to long vehicles, such as
trucks.
Warning display
:Warning display
Blind Spot Assist is not active at speeds below
approximately 20 mph (30 km/h). Vehicles in
the monitoring range are then not indicated.
If a vehicle is detected within the blind spot
monitoring range at speeds above 20 mph
(30 km/h), warning lamp :on the correspond-
ing side lights up red. This warning is always
emitted 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
7 mph (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 sur-
roundings.
Collision warning
If a vehicle is detected in the monitoring range of
Blind Spot Assist and you switch on the corre-
sponding turn signal, a double warning tone
sounds. Red warning lamp :flashes. If the turn
signal remains on, vehicles detected are indica-
ted by the flashing of red warning lamp :.
There are no further warning tones.
Driving systems217
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Switching on Blind Spot Assist
XMake sure that Blind Spot Assist
(Ypage 248) is activated in the on-board
computer.
XTurn the SmartKey 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, gray radar
waves propagating backwards appear next to
the vehicle in the assistance display in the mul-
tifunction display. Above a speed of 20 mph
(30 km/h), the color of the radar waves in the
assistance display changes to green :. Blind
Spot Assist is then ready for use.
Lane Keeping Assist
General notes
Lane Keeping Assist monitors the area in front of
your vehicle by means of multifunction cam-
era :which is attached behind the top of the
windshield. Active Lane Keeping Assist detects
lane markings on the road and can warn you
before you leave your lane unintentionally. This function is available in the range between
40 mph and 120 mph (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 in the steering wheel for
up to 1.5 seconds.
Important safety notes
GWARNING
Lane Keeping Assist may not always clearly
recognize lane markings.
In this case, Lane Keeping Assist may:
Rgive an unnecessary warning
Rnot give a warning
There is a risk of an accident.
Always pay particular attention to the traffic
situation and stay in lane, in particular if
warned by Lane Keeping Assist.
GWARNING
The Lane Keeping Assist warning does not
return the vehicle to the original lane. There is
a risk of an accident.
You should always steer, brake or accelerate
yourself, in particular if warned by Lane Keep-
ing Assist.
If you fail to adapt your driving style, Lane Keep-
ing Assist can neither reduce the risk of an acci-
dent nor override the laws of physics. Lane
Keeping Assist cannot take into account the
road, traffic and weather conditions. Lane Keep- ing Assist is merely an aid. You are responsible
for the distance to the vehicle in front, for vehi-
cle speed, for braking in good time and for stay-
ing in your lane.
The Lane Keeping Assist does not keep the vehi-
cle in the lane.
The system may be impaired or may not function
if:
Rthere is poor visibility, e.g. due to insufficient
illumination of the road, or due to snow, rain,
fog or spray
Rthere is glare, e.g. from oncoming traffic, the
sun or reflections (e.g. when the road surface
is wet)
Rthe windshield is dirty, fogged up, damaged or
covered, for instance by a sticker, in the vicin-
ity of the camera
218Driving systems
Driving and parking