G
WARNING
DISTRONIC PLUS brakes your vehicle with up to 50% of the maximum possible deceleration.
If this deceleration is not sufficient,
DISTRONIC PLUS alerts you with a visual and
acoustic warning. There is a risk of an acci-
dent.
Apply the brakes yourself in these situations
and try to take evasive action.
! When DISTRONIC PLUS or the HOLD
function is activated, the vehicle brakes
automatically in certain situations.
To avoid damage to the vehicle, deactivate DISTRONIC PLUS and the HOLD function in
the following or similar situations:
R when towing away
R in a car wash
If you fail to adapt your driving style,
DISTRONIC PLUS can neither reduce the risk
of an accident nor override the laws of phys-
ics. DISTRONIC PLUS cannot take road and
weather conditions or traffic conditions into
account. DISTRONIC PLUS 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 lane.
Do not use DISTRONIC PLUS:
R in road and traffic conditions which do not
allow you to maintain a constant speed, e.g.
in heavy traffic or on winding roads
R on smooth or slippery roads. Braking or
accelerating can cause the drive wheels to lose traction and the vehicle could then
skid
R when there is poor visibility, e.g. due to fog,
heavy rain or snow
DISTRONIC PLUS may not detect narrow
vehicles driving in front, e.g. motorcycles, or
vehicles driving on a different line.
In particular, the detection of obstacles can
be impaired in the case of:
R dirt on the sensors or obscured sensors
R snow or heavy rain R
interference by other radar sources
R the possibility of strong radar reflections,
for example, in multi-storey car parks
If DISTRONIC PLUS no longer detects a vehi-
cle in front, it may unexpectedly accelerate to the speed stored.
This speed can:
R be too high for a filter lane or a slip road
R be so high in the right lane that you pass
vehicles driving on the left (left-hand drive
countries)
R be so high in the left lane that you pass
vehicles driving on the right (right-hand
drive countries)
If there is a change of drivers, advise the new driver of the speed stored.
Cruise control lever :
To activate or increase speed
; To set the specified minimum distance
= LIM indicator lamp
? To activate at the current speed/last
stored speed
A To activate or reduce speed
B To switch between DISTRONIC PLUS and
variable SPEEDTRONIC
C To deactivate DISTRONIC PLUS
You can operate DISTRONIC PLUS and varia- ble SPEEDTRONIC with the cruise control
lever. Driving systems
237Driving and parking Z
steer the vehicle yourself to ensure that it
does not leave the 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
The system is switched to passive and no lon-
ger assists you by performing steering inter-
ventions if:
R you actively change lane
R you switch on the turn signal
R you take your hands off the steering wheel
or do not steer for a prolonged period of
time
i After you have finished changing lanes,
Steering Assist and Stop&Go Pilot are auto-
matically active again. Steering Assist and Stop&Go Pilot cannot
provide assistance:
R on very sharp corners
R when towing a trailer
R a loss of tyre pressure or a defective tyre
has been detected and displayed
Pay attention also to the important safety
notes for DISTRONIC PLUS (Y page 236).
The steering interventions are carried out
with a limited steering moment. The system
requires the driver to keep his hands on the
steering wheel and to steer himself.
If you do not steer yourself or if you take your
hands off the steering wheel for a prolonged
period of time, the system will first alert you
with a visual warning. A steering wheel sym-
bol appears in the multifunction display. If you have still not started to steer and have not
taken hold of the steering wheel after five
seconds at the latest, a warning tone also
sounds to remind you to take control of the
vehicle. Steering Assist and Stop&Go Pilot
switch to passive mode. DISTRONIC PLUS
remains active.
Activating Steering Assist and Stop&Go
Pilot X
Press button ;.
Indicator lamp :lights up. The DTR+: DTR+:
steering assist. on
steering assist. on message appears
in the multifunction display. Steering Assist and Stop&Go Pilot are activated. 246
Driving systemsDriving and parking
X
To cancel the procedure: press the%
button on the multifunction steering wheel or pull away.
or
X To park using Active Parking Assist:
press the abutton on the multifunction
steering wheel.
The Park Assist active Accelerate
Park Assist active Accelerate
and brake and brake Observe surroundings
Observe surroundings mes-
sage appears in the multifunction display.
X Release the multifunction steering wheel.
X Reverse the vehicle, being ready to brake at
all times. When reversing, drive at a speed
below 10 km/h. Otherwise, Active Parking Assist will be cancelled.
Active Parking Assist brakes the vehicle toa standstill when the vehicle approaches
the rear border of the parking space.
Manoeuvring may be required in tight park-
ing spaces.
The Park Assist active Select D Park Assist active Select D
Observe
Observe surroundings
surroundings message appears in
the multifunction display.
X Shift the transmission to position Dwhile
the vehicle is stationary.
Active Parking Assist immediately steers in
the other direction.
The Park Assist active Accelerate Park Assist active Accelerate
and brake
and brake Observe surroundings
Observe surroundings mes-
sage appears in the multifunction display.
i You will achieve the best results by wait-
ing for the steering procedure to complete before pulling away.
X Drive forwards and be ready to brake at all
times.
Active Parking Assist brakes the vehicle to a standstill when the vehicle approaches
the front border of the parking space.
Manoeuvring may be required in tight park-
ing spaces.
The Park Assist active Select R
Park Assist active Select R
Observe
Observe surroundings surroundings message appears in
the multifunction display. As soon as the parking procedure is com-
plete, the Park
ParkAssist
Assist switched
switched off
offmes-
sage appears and a warning tone sounds. The vehicle is now parked.
The vehicle is kept stationary without the
driver having to depress the brake pedal. The
braking effect is cancelled when you depress
the accelerator pedal.
Active Parking Assist no longer supports you
with steering interventions and brake appli-
cations. When Active Parking Assist is fin-
ished, you must steer and brake again your-
self. PARKTRONIC is still available.
Parking tips:
R The way your vehicle is positioned in the
parking space after parking is dependent
on various factors. These include the posi-
tion and shape of the vehicles parked in
front and behind it and the conditions of the
location. It may be the case that Active
Parking Assist guides you too far into a
parking space, or not far enough into it. In
some cases, it may also lead you across or
onto the kerb. If necessary, you should can-
cel the parking procedure with Active Park- ing Assist.
R You can also preselect transmission posi-
tion D. The vehicle redirects and does not
drive as far into the parking space. Should
the transmission change take place too
early, the parking procedure will be cancel-
led. A sensible parking position can no lon- ger be achieved from this position.
Exiting a parking space In order that Active Parking Assist can sup-
port you when exiting the parking space:
R the border of the parking space must be
high enough at the front and the rear. A
kerb stone is too small, for example.
R the border of the parking space must not be
too wide, as the position of the vehicle must
not exceed an angle of 45° to the starting 260
Driving systemsDriving an
d parking
R
you are driving faster than 10 km/h
R a wheel spins and ESP ®
intervenes or fails.
The ÷ warning lamp lights up in the
instrument cluster.
A warning tone sounds. The parking symbol
disappears and the multifunction display
shows the Park Assist cancelled Park Assist cancelled mes-
sage.
When Active Parking Assist is cancelled, 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 pedal again. Reversing camera
General notes Reversing camera
:is an optical parking
and manoeuvring aid. It shows the area
behind your vehicle with guide lines in the
Audio 20 or COMAND Online display.
The area behind the vehicle is displayed as a
mirror image, as in the rear-view mirror.
i The text shown in the Audio 20 or
COMAND Online display depends on the
language setting. The following are exam-
ples of reversing camera messages in the
Audio 20 or COMAND Online display.
Important safety notes The reversing camera is only an aid. It is not a
substitute for your attention to the immediate
surroundings. 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.
Under the following circumstances, the
reversing camera will not function, or will
function in a limited manner:
R if the boot lid or tailgate is open
R in heavy rain, snow or fog
R at night or in very dark places
R if the camera is exposed to very bright light
R if the area is lit by fluorescent bulbs or LED
lighting (the display may flicker)
R if there is a sudden change in temperature,
e.g. when driving into a heated garage in
winter
R if the camera lens is dirty or obstructed.
Observe the notes on cleaning
(Y page 425)
R if the rear of your vehicle is damaged. In this
case, have the camera position and setting checked at a qualified specialist workshop.
The field of vision and other functions of the
reversing camera may be restricted due to
additional accessories on the rear of the vehi-
cle (e.g. licence plate holder, bicycle rack).
i The reversing camera is protected from
raindrops and dust by means of a flap.
When the reversing camera is activated,
this flap opens.
The flap closes again when:
R you have finished the manoeuvring proc-
ess
R you switch off the engine
R you open the boot or luggage compart-
ment
See the notes on cleaning (Y page 425).
For technical reasons, the flap may remain
open briefly after the reversing camera has been deactivated. 262
Driving syste
msDriving and parking
Activating/deactivating the reversing
camera X
To activate: make sure that the key is in
position 2in the ignition lock.
X Make sure that the Activation by R
Activation by R
gear
gear function is selected in Audio 20 or
COMAND Online (see the Digital Owner's
Manual).
X Engage reverse gear.
The reversing camera flap opens. The area
behind the vehicle is shown with guide lines
in the Audio 20 or COMAND Online display.
The image from the reversing camera is
available throughout the manoeuvring
process.
X To change the function mode for vehi-
cles with trailer tow hitch: using the
Audio 20 or COMAND Online controller,
select symbol :for the "Reverse parking"
function or symbol ;for "Coupling up a
trailer".
The symbol of the selected function is high-
lighted.
To deactivate: the reversing camera deacti-
vates if you shift the transmission to Por after
driving forwards a short distance. Messages in the Audio 20 or COMAND
Online display The reversing camera may show a distorted
view of obstacles or show them incorrectly or
not at all. Obstacles are not shown by the
reversing camera in the following locations:
R very close to the rear bumper
R under the rear bumper
R in the area immediately above the boot lid
handle or tailgate handle
! Objects not at ground level may appear to
be further away than they actually are, e.g.:
R the bumper of a parked vehicle
R the drawbar of a trailer
R the ball coupling of a trailer tow hitch
R the rear section of an HGV
R a slanted post
Use the guidelines only for orientation.
Approach objects no further than the bot-
tom-most guideline. :
Yellow guide line at a distance of approx-
imately 4.0 mfrom the rear of the vehicle
; 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 lane marking the course the tyres
will take at the current steering wheel
angle (dynamic) Driving systems
263Driving and parking Z
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 away from the vehicle 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 Online
(see the Digital Owner's Manual). 360° camera
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 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 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 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 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:
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
The line thickness and colour of the brackets show how far the vehicle is from an object.
R yellow brackets with thin lines:
PARKTRONIC is active
R yellow brackets with normal lines: an
object is present in close range of the vehi-
cle
R red 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.
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 Driving systems
267Driving and parking Z
R
if you are driving with the active Steer
Assist of DISTRONIC PLUS
R if the time has been set incorrectly
R in active driving situations, such as when
you change lanes or change your speed
The ATTENTION ASSIST tiredness assess-
ment is deleted and restarted when continu-
ing the journey, if:
R you switch off the engine
R you 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 You can have current status information dis-
played in the assistance menu (Y page 327)
of the on-board computer.
X Select the assistance graphics display for
ATTENTION ASSIST using the on-board
computer (Y page 326).
The following information is displayed:
R the length of the journey since the last
break
R the attention level determined by ATTEN-
TION ASSIST ( Attention level
Attention level), dis-
played in a bar display in five levels from
high to low
R If ATTENTION ASSIST is unable to calculate
the attention level and cannot issue a warn-
ing, the System suspended
System suspended message
appears. The bar display then changes the
display, e.g. if you are driving at a speed
below 60 km/h or above 200 km/h. Activating ATTENTION ASSIST X
Activate ATTENTION ASSIST using the on-
board computer (Y page 329).
The system determines the attention level
of the driver depending on the setting
selected:
Selection Standard Standard : the sensitivity with
which the system determines the attention
level is set to normal.
Selection Sensitive 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
display in the assistance graphic display.
When ATTENTION ASSIST has been deactiva-
ted, it is automatically reactivated after the
engine has been switched off. 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 ATTENTION ASSIST
Take a break!
Take a break!.
In addition to the message shown in the mul-
tifunction display, you will then hear a warn-
ing tone.
X If necessary, take a break.
X Confirm the message by pressing the a
button on the steering wheel.
On long journeys, take regular breaks in good time that allow for adequate recuperation. If
you do not take a break and ATTEN-
TION ASSIST still detects increasing lapses in
concentration, 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 Driving systems
273Driving and parking Z
Lane Keeping Assist
General notes
Lane Keeping Assist monitors the area in
front of your vehicle by means of multifunc-
tion camera :attached at the top of the
windscreen. Lane Keeping Assist detects lane markings on the road and can warn you
before you leave your lane unintentionally.
This function is available in 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
279Driving and parking Z