:Front warning display
;Additional PARKTRONIC measurement
operational readiness indicator
=Rear warning display
Vehicles with PARKTRONIC: when
PARKTRONIC is operational (
Ypage 199),
additional measurement operational readi-
ness indicator ;appears in the Audio 20 or
COMAND display. If the PARKTRONIC warn-
ing displays are active or light up, warning
displays :and =are also active or light up
correspondingly in the Audio 20 or COMAND
display.
"Reverse parking" function
Backing up straight into a parking space
without turning the steering wheel
:White guide line without turning the steer-
ing wheel, vehicle width including the
exterior mirrors (static)
;Yellow guide line for the vehicle width
including the exterior mirrors, for current
steering wheel angle (dynamic)
=Yellow guide line at a distance of approx-
imately 3 ft (1.0 m) fromthe rear of the
vehicle
?Red guide line at a distance of approx-
imately 12 in (0.30 m) fromthe rear of the
vehicle
XMake sure that the rear view camera is
switched on (
Ypage 207).
The lane and the guide lines are shown.
XWith the help of white guide line :, check
whether the vehicle will fit into the parking
space.
XUsing white guide line :as a guide, care-
fully back up until you reach the end posi-
tion.
Red guide line ?is then at the end of the
parking space. The vehicle is almost paral-
lel in the parking space.
Reverse perpendicular parking with the
steering wheel at an angle
:Parking space marking
;Yellow guide line for the vehicle width
including the exterior mirrors, for current
steering wheel angle (dynamic)
XDrive past the parking space and bring the vehicle to a standstill.
XMake sure that the rear view camera is
switched on (
Ypage 207).
The lane and the guide lines are shown.
XWhile the vehicle is at a standstill, turn the
steering wheel in the direction of the park-
208Driving system s
Driving an d parking
ing space until yellow guide line;reaches
parking space marking :.
XKeep the steering wheel in that position
and back up carefully.
:Yellow guide line for the vehicle width
including the exterior mirrors, for current
steering wheel angle (dynamic)
XStop the vehicle when it is almost exactly in
front of the parking space.
The white lane should be as close to parallel
with the parking space marking as possi-
ble.
:White guide line at current steering wheel
angle
;Parking space marking
XTurn the steering wheel to the center posi-
tion while the vehicle is stationary.
:Red guide line at a distance of approx-
imately 12 in (0.30 m) from the rear of the
vehicle
;White guide line without turning the steer- ing wheel
=End of parking space
XBack up carefully until you have reached
the final position.
Red guide line :is then at end of parking
space =. The vehicle is almost parallel in
the parking space.
"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.
Object detection
The rear view camera helps detect moving
and stationary objects. If an object (person,
vehicle or other obstacle) is detected, this
Driving systems209
Driving and parking
Z
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 wide-angle
mode.
In order to use the function, it must be
switched on in Audio 20 or COMAND (see the
Digital Operator's Manual).
360° camera
General notes
The 360° camera is a system consisting of
four cameras.
The system analyzes images from the follow-
ing cameras:
RRear view camera
RFront camera
RTwo side cameras in the exterior mirrors
The cameras capture the immediate sur-
roundings of the vehicle. The system sup-
ports you, for example when parking or if
vision is restricted at an exit.
You can show pictures from the 360° camera
in full-screen mode or in six different split-
screen views on the Audio 20 or COMAND
display. 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 six split-screen views are:
Rtop view and picture from the rear view
camera (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
in the Audio 20 or COMAND display are hid-
den.
When you change between transmission
positions 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 brack- ets around the vehicle icon in the top view,
or
Rat the bottom right as red or yellow brack-
ets 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 vehi- cle
Rred line: an object is present in the imme-
diate 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
incorrectly or not at all. The 360°camera is
not a substitute for attentive driving.
You are always responsible for safe maneu-
vering and parking. When maneuvering or
parking, make sure that there are no persons,
animals or objects in the area in which you are
maneuvering.
You are always responsible for safety, and
must always pay attention to your surround-
ings when parking and maneuvering. This
applies to the areas behind, in front of and
beside the vehicle. You could otherwise
endanger yourself and others.
210Driving systems
Driving and parking
=Guide line for the maximum steering angle
?Yellow lane marking tires at current steer-
ing wheel angle (dynamic)
AYellow guide line for the vehicle width
including the exterior mirrors, for current
steering wheel angle (dynamic)
BVehicle center axle (marker assistance)
CYellow guide line at a distance of approx-
imately 3 ft(1.0m) from the rear of the
vehicle
DBumper
ERed guide line at a distance of approx-
imately 12 in (0.30 m) fromthe rear of the
vehicle
The guide lines are shown when the trans-
mission is in position R.
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 steer-
ing wheel angle (dynamic)
ARed guide line at a distance of approx-
imately 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
Driving systems213
Driving and parking
Z
When ATTENTION ASSIST is deactivated, the
ésymbol appears in the multifunction
display in the assistance graphic display.
When ATTENTION ASSIST has been deactiva-
ted, it is automatically reactivated after the
engine has been stopped. The sensitivity
selected corresponds to the last selection
activated (standard/sensitive).
Warning in the multifunction display
If fatigue or increasing lapses in concentra-
tion are detected, a warning appears in the
multifunction display: ATTENTION ASSIST
Take a Break!.
In addition to the message shown in the mul-
tifunction display, you will then hear a warn-
ing 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 concentra-
tion, you will be warned again after
15 minutes at the earliest. This will only hap-
pen if ATTENTION 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 instru-
ment cluster. The data and general traffic reg-
ulations stored in the navigation system are
used to determine the current speed limit. Traffic Sign Assist is a map-based system,
and thus, 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
updated.
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
available 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 251).
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.
216Driving systems
Driving and parking
Rthe distance to the vehicle in front is too
small and the lane markings thus cannot be
detected
Rthe lane markings change quickly, e.g.
lanes branch off, cross one another or
merge
Rthe road is narrow and winding
Rthere are strong shadows cast on the road
If no vehicle is detected in the adjacent lane
and broken lane markings are detected, no
lane-correcting brake application is made.
Warning vibration in the steering wheel
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 steer-
ing wheel for up to 1.5 second s.
Lane -correcting brake application
If you leave your lane, under certain circum-
stances the vehicle will brake briefly on one
side. This is meant to assist you in bringing
the vehicle back to the original lane.
GWARNING
A lane-correcting brake application cannot
always bring the vehicle back into the original lane. There is a risk of an accident.
Always steer, brake or accelerate yourself,
especially if Active Lane Keeping Assist warns
you or makes a lane-correcting brake appli-
cation.
If a lane-correcting brake application occurs,
display :appears in the multifunction dis-
play. The brake application also slightly
reduces vehicle speed. This function is available in the range between
40 mph and 120 mph (60 km/h and
200 km/h).
A lane-correcting brake application can be
made after driving over a lane marking detec-
ted as being solid or broken. Before this, a
warning must be given by means of intermit-
tent vibration in the steering wheel. In addi-
tion, a lane with lane markings on both sides
must be recognized.
In the case of a broken lane marking being
detected, a lane-correcting brake application
can only be made if a vehicle has been detec-
ted in the adjacent lane. Oncoming vehicles,
overtaking vehicles and vehicles in adjacent
lanes can be detected.
iA further lane-correcting brake applica-
tion can only occur after your vehicle has
returned to the original lane.
No lane-correcting brake application occurs
if:
Ryou clearly and actively steer, brake or
accelerate.
Ryou cut the corner on a sharp bend.
Ryou have switched on the turn signal.
Ra driving safety system intervenes, e.g.
ESP®, PRE-SAFE®Brake or Active Blind
Spot Assist.
Ryou have adopted a sporty driving style with
high cornering speeds or high rates of
acceleration.
RESP®is switched off.
Rthe transmission is not in position D.
Ra loss of tire pressure or a defective tire has
been detected and displayed.
Ran obstacle in the lane in which you are
driving has been detected .
Acti
ve Lane Keeping Assist may not detect
other road users or traffic situations. An inap-
propriate brake application may be interrup-
ted at any time if you:
Rsteer slightly in the opposite direction
Rswitch on the turn signal
Rclearly brake or accelerate
226Driving systems
Driving and parking
A lane-correcting brake application is inter-
rupted automatically if:
Ra driving safety system intervenes, e.g.
ESP®, PRE-SAFE®Brake or Active Blind
Spot Assist.
Rlane markings can no longer be recognized.
Activating/deactivating Active Lane
Keeping Assist
XTo activate: press button ;.
Indicator lamp :lights up. The Lane
Keeping Assist Onmessage appears in
the multifunction display. If all conditions
have been satisfied, a warning or steering
intervention may be made.
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected, the lines in the assistance graphics display
(
Ypage 251) are shown in green. Active
Lane Keeping Assist is ready for use.
XTo deactivate: press button;.
Indicator lamp :goes out. The Active
Lane Keeping Assist is deactivated. The
Lane Keeping Assist Off
message
appears in the multifunction display.
Selecting Standard or Adaptive setting
XIn the DriveAssistmenu on the on-board
computer, select the Active Lane Keep‐
ing Assistfunction (Ypage 253).
XSelectStandardorAdaptive.
When Standard
is selected, no warning
vibration occurs if:
Ryou switch on the turn signals. In this
event, the warnings are suppressed for a
certain period of time.
Ra driving safety system intervenes, such
as ABS, BAS or ESP®.
When Adaptive
is selected, no warning
vibration occurs if:
Ryou switch on the turn signals. In this
event, the warnings are suppressed for a
certain period of time.
Ra driving safety system intervenes, e.g.
ABS, BAS or ESP®.
Ryou accelerate hard, e.g. kickdown.
Ryou brake hard.
Ryou steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly.
Ryou 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 recognizes certain con-
ditions and warns you accordingly.
The warning vibration occurs earlier if:
Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a high-
way.
Rthe system recognizes solid lane markings.
The warning vibration occurs later if:
Rthe road has narrow lanes.
Ryou cut the corner on a bend.
Towing a trailer
Important safety notes
GWARNING
Installing an unsuitable ball coupling may
result in overloading of the trailer tow hitch
and the rear axle. This applies especially if the ball coupling in question is longer or angled
differently. This could seriously impair the
driving characteristics and the trailer can
come loose. There is a risk of an accident.
Towing a trailer227
Driving an d parking
Z
You should only ever install a ball coupling
that has the permissible dimensions and thatis designed to meet your trailer-towing
requirements. Do not modify the ball coupling
or the trailer tow hitch.
You will find the values approved by the man-ufacturer on the vehicle identification plates
and those for the towing vehicle under "Tech-
nical data" (
Ypage 416).
GWARNING
If the ball coupling is not installed correctly or not secured with the bolt provided and the
corresponding spring cotter, the trailer may
come loose. There is a risk of an accident.
Always install and secure the ball coupling as
described. Before every journey, ensure that
the ball coupling is secured with the bolt and
the corresponding spring cotter.
GWARNING
When the vehicle/trailer combination begins
to lurch, you could lose control of it. The vehi- cle/trailer combination could even rollover.
There is a risk of an accident.
On no account should you attempt to
straighten up the vehicle/trailer combination
by increasing the speed. Reduce vehicle
speed and do not countersteer. Apply the
brake as necessary.
Please observe the manufacturer's operating
instructions for the trailer coupling if a
detachable trailer coupling is used.
Couple and uncouple the trailer carefully. If
you do not couple the trailer to the towing
vehicle correctly, the trailer could become
detached.
Make sure that the following values are not
exceeded:
Rthe permissible trailer drawbar noseweight
Rthe permissible trailer load
Rthe permissible rear axle load of the towing
vehicle
Rthe maximum permissible gross vehicle
weight of both the towing vehicle and the
trailer
The applicable permissible values, which
must not be exceeded, can be found:
Rin the vehicle documents
Ron the identification plates for the trailer
tow hitch and the trailer
Ron the vehicle identification plate
If the values differ, the lowest value applies.
When towing a trailer, your vehicle's handling
characteristics will be different in comparison
with when driving without a trailer.
The vehicle/trailer combination:
Ris heavier
Ris restricted in its acceleration and gradi-
ent-climbing capability
Rhas an increased braking distance
Ris affected more by strong crosswinds
Rdemands more sensitive steering
Rhas a larger turning radius
This could impair the handling characteris-
tics.
When towing a trailer, always adjust your
speed to the current road and weather con-
ditions. Do not exceed the max
imum permis-
sible speed for your vehicle/trailer combina-
tion.
Notes on towing a trailer
Important safety notes
GWARNING
When the vehicle/trailer combination begins
to lurch, you could lose control of it. The vehi- cle/trailer combination could even rollover.
There is a risk of an accident.
On no account should you attempt to
straighten up the vehicle/trailer combination
by increasing the speed. Reduce vehicle
228Towing a trailer
Driving and parking