Front sensors
CenterApprox. 40 in (approx.
100 cm)
CornersApprox. 24 in (approx.
60 cm)
Rear sensors
CenterApprox. 48 in (approx.
120 cm)
CornersApprox. 32 in (approx.
80 cm)
Minimum distance
CenterApprox. 8 in (approx.
20 cm)
CornersApprox. 6 in (approx.
15 cm)
If there is an obstacle within this range, the
relevant warning displays light up and a warn-
ing tone sounds. If the distance falls below
the minimum, the distance may no longer be
shown.
Information in the Digital Operator's
Manual
In the Digital Operator's Manual you will find
information on the following topics:
RWarning displays
RDeactivating/activating PARKTRONIC
RProblems with PARKTRONIC
Active Parking Assist
General notes
Active Parking Assist is an electronic parking
aid with ultrasound. It measures the road on
both sides of the vehicle. A parking symbol
indicates a suitable parking space. Active
steering intervention and brake application can assist you during parking. You may also
use PARKTRONIC (
Ypage 168).
iThe active braking application is only
available on vehicles with automatic trans-
mission.
Important safety notes
Active Parking Assist is merely an aid. It is not
a replacement for your attention to your
immediate surroundings. You are always
responsible for safe maneuvering, parking
and exiting a parking space. Make sure that
no persons, animals or objects are in the
maneuvering range.
When PARKTRONIC is switched off, Active
Parking Assist is also unavailable.
GWARNING
If there are objects above the detection range:
RActive Park Assist may steer too early
Rthe vehicle may not stop in front of these
objects.
You may cause a collision as a result. There is
a risk of an accident.
If there are objects above the detection range,
stop and deactivate Active Parking Assist.
GWARNING
While parking or pulling out of a parking
space, the vehicle swings out and can drive
onto areas of the oncoming lane. This could
result in a collision with another road user.
There is a risk of an accident.
Pay attention to other road users. Stop the
vehicle if necessary or cancel the Active Park- ing Assist parking procedure.
!If unavoidable, you should drive over
obstacles such as curbs slowly and not at a
sharp angle. Otherwise, you may damage
the wheels or tires.
170Driving systems
Driving and parking
Active Parking Assist may possibly indicate
parking spaces which are not suitable for
parking, for example:
Rwhere parking or stopping is prohibited
Rin front of driveways or entrances and exits
Ron unsuitable surfaces
Parking tips:
ROn narrow roads, drive as close to the park-
ing space as possible.
RParking spaces that are littered or over-
grown might be identified or measured
incorrectly.
RParking spaces that are partially occupied
by trailer drawbars might not be identified
as such or be measured incorrectly.
RSnowfall or heavy rain may lead to a parking
space being measured inaccurately.
RPay attention to the PARKTRONIC
(
Ypage 170 )warning messages during the
parking procedure.
RYou can intervene in the steering procedure
to correct it at any time. Active Parking
Assist will then be canceled.
RWhen transporting a load which protrudes
from your vehicle, you should not use
Active Parking Assist.
RNever use Active Parking Assist when snow
chains are installed.
RMake sure that the tire pressures are
always correct. This has a direct influence
on the parking characteristics of the vehi-
cle.
Use Active Parking Assist for parking spaces:
Rparallel or at right angles to the direction of
travel
Rthat are on straight roads, not bends
Rthat are on the same level as the road, e.g.
not on the pavement
Information in the Digital Operator's
Manual
In the Digital Operator's Manual you will find
information on the following topics:
RDetecting parking spaces
RParking
RExiting a parking space
RCanceling Active Parking Assist
Rear view camera
General notes
Example :Sedan
Rear view camera :is an optical parking and
maneuvering aid. It shows the area behind
your vehicle with guidelines in the Audio 20 or
COMAND display.
The area behind the vehicle is displayed as a
mirror image, as in the rear view mirror.
iThe text shown in the Audio 20 or
COMAND display depends on the language
setting. The following are examples of rear
view camera messages in the COMAND
display.
Important safety notes
The rear view camera is only an aid. It is not a
replacement for your attention to your imme- diate surroundings. You are always responsi-
ble for safe maneuvering and parking. When
maneuvering or parking, make sure that there
are no persons, animals or objects in the area
in which you are maneuvering.
Driving systems171
Driving and parking
Z
Information in the Digital Operator's
Manual
Inthe Digital Operator's Manual you willfind
information on the following topics:
RMessages inthe Audio 20 or COMAND dis-
play
R"Reverse parking" function
RWide-ang lefunction
360° camera
General notes
The 360° camera isa system consisting of
four cameras.
The system analyzes images from the fol low-
ing cameras:
RRear view camera
RFront camera
RTwo cameras inthe exterior rear view mir-
rors
The cameras capture the immediate sur-
roun dings of the vehicle. The system sup-
ports you, e.g. 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 COMAND/A udio20 dis-
play. A split-screen view also includes a top
view of the vehicle. This view iscalculated
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 side mirror
cameras (rear wheel view)
Rtop view and images from the sidemirror
cameras (front wheel view) When the function
isactive and you shift the
transmission from Dor Rto N, the dynamic
guidelines are hidden.
When you change between transmission
posit ionsDand R, you see the prev
iously
selected front or rear view.
Distances measured byPARKTRONIC will
also beoptical lydisplayed:
Rin split screen viewas red or yellow brack-
ets around the vehicle icon inthe top view,
or
Rat the bottom right as red or yellow brack-
ets around the vehicle symbol infull-screen
mode
The line thickness and color of the brackets
show how far the vehicle isfrom an object.
Ryellow brackets with th inlines:
PARKTRONIC isactive
Ryellow brackets with normal lines: an
object ispresent inclose range of the veh i-
cle
Rred line: an object ispresent inthe imme-
diat e close range of the vehicle
Important safety notes
The 360°camera isonly an aid and may show
a distorted viewof obstacles, show them
incorrectly or not at all. The 360°camera is
not a substitute for attenti vedriving.
You are always responsible for safe maneu-
vering and parking. When maneuvering or
parking, make sure that there are no persons,
animals or objects inthe 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
applie s to the areas behind, infront of and
beside the vehicle. You could otherwise
endanger yourself and others.
The 360° camera willnot function or will
function ina limited manner:
Rifthe doors are open
Rifthe exterior mirrors are folded in
Driving systems173
Driving and parking
Z
XTo switch to180° View:turn 3 the
controller to select 180° View
and press
7 to confirm.
iThe 180° Viewoption is only available in
the following views:
RTop view with picture from the rear view
camera
RTop view with picture from the front cam-
era
Information in the Digital Operator's
Manual
In the Digital Operator's Manual you will find
information on the following topics:
RDisplays in the COMAND/Audio 20 display
RWide-angle function
RObject detection
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 previous display appears on the
COMAND/Audio 20 display. You can also
switch the display by selecting the &sym-
bol in the display and pressing 7the con-
troller to confirm.
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 ATTEN-
TION ASSIST detects typical indicators of fati-
gue or increasing 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
approximately 30 minutes
Rif the road condition is poor, e.g. if the sur- face 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
acceleration
Rif you are predominantly driving at a speed
below 37 mph (60 km/h) or above 124 mph
(200 km/h)
Rif you are driving with the DISTRONIC PLUS
Steering Assist activated
Rif the time has been set incorrectly
Rin active driving situations, such as when
you change lanes or change your speed
ATTENTION ASSIST is reset when you con-
tinue your journey and starts assessing your
tiredness again if:
Ryou switch off the engine
Ryou take off your seat belt and open the
driver's door, e.g. for a change of drivers or
to take a break
Displaying the attention level
Driving systems175
Driving an d parking
Z
You can have current status information dis-
played in the assistance menu (
Ypage 190)
of the on-board computer.
XSelect the Assistance display for ATTEN-
TION ASSIST using the on-board computer
(
Ypage 190).
The following information is displayed:
Rlength of the journey since the last break.
Rthe attention level determined by ATTEN-
TION ASSIST, displayed in a bar display in
five levels from high to low.
Rif ATTENTION ASSIST is unable to calculate
the attention level and cannot output a
warning, 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 190).
The system determines the attention level
of the driver depending on the setting
selected:
Standard selected: the sensitivity with
which the system determines the attention
level is set to normal.
Sensitive selected: the sensitivity is set
higher. The attention level detected by Atten-
tion Assist is adapted accordingly and the
driver is warned earlier.
When ATTENTION ASSIST is deactivated, the
À symbol and OFF appear in the multi-
function display in the assistance display
when the engine is running.
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, you will be warned again
after 15 minutes at the earliest. This will only
happen if ATTENTION ASSIST still detects
typical indicators of fatigue or increasing lap-
ses in concentration.
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.
As Traffic Sign Assist is a map-based system,
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
176Driving systems
Driving and parking
For Active Lane Keeping Assist to assist you
when driving, the radar sensor system must
be operational
Important safety notes
If you fail to adapt your driving style, Active
Lane Keeping Assist can neither reduce the
risk of accident nor override the laws of phys-
ics. Active Lane Keeping Assist cannot take
account of road and weather conditions. It
may not recognize traffic situations. Active
Lane Keeping Assist is only an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good
time and for staying in your lane.
Active Lane Keeping Assist cannot continu-
ously keep your vehicle in its lane.
GWARNING
Active Lane Keeping Assist cannot always
clearly detect lane markings.
In such cases, Active Lane Keeping Assist
can:
Rgive an unnecessary warning and then
make a course-correcting brake application
to the vehicle
Rnot give a warning or intervene
There is a risk of an accident.
Always pay particular attention to the traffic
situation and keep within the lane, especially
if Active Lane Keeping Assist alerts you. Ter-
minate the intervention in a non-critical driv-
ing situation.
The system may be impaired or may not func-
tion if:
Rthere is poor visibility, e.g. due to insuffi-
cient 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
vicinity of the camera
Rthe radar sensors in the front or rear bump-
ers or the radiator trim are dirty, e.g.
obscured by snow
Rthere are no, several or unclear lane mark- ings for a lane, e.g. in areas with road con-
struction work
Rthe lane markings are worn away, dark or
covered up, e.g. by dirt or snow
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 seconds.
Lane-correcting brake application
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.
GWARNING
Active Lane Keeping Assist only detects traf-
fic conditions or road users to a limited
extent. In very rare cases, the system may
make an inappropriate brake application, e.g. after intentionally driving over a solid lane
marking. There is a risk of an accident.
An inappropriate brake application may be
interrupted at any time if you steer slightly in
the opposite direction. Always make sure that
184Driving systems
Driving and parking
there is sufficient distance on the side for
other traffic or obstacles.
Example: Sedan
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.
If a lane-correcting brake application occurs,
display:appears in the multifunction dis-
play.
A lane-correcting brake application can be
made after driving over a lane marking rec-
ognize 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. The following vehi-
cles can have an influence on brake applica-
tion: oncoming traffic, vehicles that are over-
taking and vehicles that are driving parallel to
your vehicle.
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 adopted a sporty driving style with
high cornering speeds or high rates of
acceleration.
Ryou have switched on the turn signals.
Ra driving safety system intervenes, e.g.
ESP®, PRE-SAFE®Brake or Active Blind
Spot Assist.
RESP®is switched off.
Rthe transmission is not in position D.
Ran obstacle has been detected in the lane in
which you are driving.
Rwhen a loss of tire pressure or a defective
tire has been detected and displayed.
There is a possibility that the Active Lane
Keeping Assist could misjudge the given traf-
fic situation. An inappropriate brake applica-
tion may be interrupted at any time if you:
Rsteer slightly in the opposite direction
Rswitch on the turn signal
Rclearly brake or accelerate
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.
Information in the Digital Operator's Man-
ual
In the Digital Operator's Manual you will find
information on the following topics:
RSwitching on Active Lane Keeping Assist
Driving system s185
Driving an d parking
Z
Operating the on-board computer
Overview
:Multifunction display
=Right control panel
?Left control panel
ABack button
XTo activate the on-board computer: turn
the SmartKey to position 1in the ignition
lock.
You can control the multifunction display and
the settings in the on-board computer using
the buttons on the multifunction steering
wheel.
Left control panel
=
;RCalls up the menu and menu bar
9
:Press briefly:
RScrolls in lists
RSelects a submenu or function
RVehicles with Audio 20: in the
Audio
menu, selects the previ-
ous or next stored station, when
the preset list or station list is
active, or an audio track
RVehicles with COMAND: in the
Audio
menu, selects the previ-
ous or next station, when the
preset list or station list is active,
or an audio track or video scene
RIn the Tel(telephone) menu:
switches to the phone book and
selects a name or telephone
number
9
:Press and hold:
RVehicles with Audio 20: in the
Audio
menu, selects the previ-
ous or next station, when the
preset list or station list is active,
selects an audio track using
rapid scrolling, or selects a video
scene
RVehicles with COMAND: in the
Audio
menu, selects a preset list
or station list in the desired fre-
quency range or an audio track
or video scene using rapid scroll-
ing
RIn the Tel(Telephone) menu:
starts rapid scrolling if the phone
book is open
aRConfirms the selection or display
message
RIn the Tel(Telephone) menu:
switches to the telephone book
and starts dialing the selected
number
Displays and operation189
On-board computer and displays
Z