
permissible speed applying
toave hicle with a
trailer is not de tected bythe sy stem. In these sit‐
uations you must adjust your speed yourself. &
WARNING Risk of accident due toActive
Speed Limit Assi stadapting theve hicle's
speed
The speed adop tedby Active Speed Limit
Assi stmay be too high or incor rect in some
individual cases, su chas:
R Inthewe t or in fog
R When towing a trailer #
Ensure that the driven speed complies
with traf fic re gulations. #
Adjust the driving speed tosuit cur rent
traf fic and weather conditions. Fu
nction of route-based speed adaptation %
The following function is countr y-dependent
and only available in conjunction with the
Driving Assi stance Package. When
Active Dis tance Assi stDISTRONIC is acti‐
va ted, theve hicle speed will be adjus ted accord‐
ingly tothero ute events ahead. Depending on
th e drive prog ram selected, theve hicle negoti‐
ates a route event ahead in a fuel-s aving, com‐
fo rtable or dynamic manner. When thero ute
eve nt has been passed, theve hicle accelerates
again tothestored speed. The set dis tance to
th eve hicle in front, vehicles de tected ahead and
speed restrictions ahead are take n into account.
Ro ute-based speed adjustment can be config‐
ured in the multimedia sy stem (/ page 222).
The following route events are take n into
account:
R Bends
R T-junctions, roundabouts and tollst ations
R Turns and exits
% When theto llst ation is reached, Active Dis‐
ta nce Assi stDISTRONIC adopts the speed as
th estored speed. Also,
the speed is reduced if the turn signal indi‐
cator tochange lanes is swit ched on and one of
th efo llowing situations is de tected:
R Turning off at junctions
R Driving on slowing-down lanes
R Driving on lanes adjacent toslowing-down
lanes
The driver is responsible forch oosing theright
speed and observing other road users. This
applies in particular tojunctions, roundabouts
and traf fic lights, as route-based speed adap ta‐
tion does not brake theve hicle toast andstill.
When route guidance is active, thefirs t speed
adjustment is car ried out automatically. If the
turn signal indica tor is switched on, the selected
ro ute is confirmed and fur ther speed adjustment
is activated.
Speed adjustment is cancelled in thefo llowing
cases:
R Ifth e turn signal indicator is switched off
before thero ute event.
R Ifth e driver depresses the accelerator or
brake pedal during the process. Driving and parking
221

Sy
stem limits
Ro ute-based speed adap tation does not take
ri ght of wayre gulations into account. The driver
is responsible for complying with road traf fic
re gulations and driving at a suitable speed.
In dif ficult conditions (e.g. unclear roads, lane
nar row ing, wetro ad sur faces, snow or ice) or
when driving wi tha trailer, the speed adjustment
made bythe sy stem may not alw ays be suitable.
In these situations the driver must inter vene
acco rdingly. &
WARNING Risk of accident in spi teof
ro ute-based speed adjustment
Ro ute-based speed adjustment might mal‐
function or be temp orarily una vailable in the
fo llowing situations:
R Ifth e driver does not follow the calcula‐
te dro ute
R If map data is not up todate or available
R Inroad con stru ction areas
R In bad weather or road conditions R
Ifth e accelera tor pedal is depressed
R Intheev ent of electronically displa yed
speed limitations #
Adjust the speed tothe traf fic situation. Setting
route-based speed adjustment Re
quirements:
R Active Dis tance Assi stDISTRONIC is acti va‐
te d.
Multimedia sy stem:
4 © 5
Settings 5
Assistance
5 Route-based speed adapt. #
Activate or deacti vate the function.
When the function is active, theve hicle
speed is adjus ted depending on thero ute
eve nts ahead.
% Further information on thero ute-based
speed adap tation (/ page 221). Ac
tive Steering Assist Fu
nction of Active Steering Assist
% The following function is countr y-dependent
and only available in conjunction with the
Driving Assi stance Package.
Ac tive Steering Assist is only available up to a
speed of 210 km/h. The sy stem helps youto
st ay inthe cent reofthe lane bymeans of mod‐
erate steering inter ventions. Depending on the
speed driven, Active Steering Assist uses the
ve hicles ahead and lane markings as a refer‐
ence.
% Depending on the count ry, in the lo wer
speed range Active Steering Assist can use
th e sur rounding traf fic as a refere nce. If nec‐
essar y,Ac tive Steering Assist can then also
pr ov ide assis tance when driving outside the
centre of the lane toform are scue lane, for
ex ample.
When the sy stem is actively steering, theà
symbol is shown in green in the multifunction
displa y.
If th e de tection of lane markings and vehicles
ahead is impaired, Active Steering Assist 222
Driving and parking

R
The dis tance totheve hicle in front is too
small and the lane markings thus cannot be
de tected.
R The road is nar row and winding.
R There are obs tacles on the lane or projecting
out into the lane, such as object mar kers.
The sy stem does not pr ovide assis tance in the
fo llowing conditions:
R On tight bends and when turning.
R When crossing junctions.
R Atroundabouts or tollst ations.
R When towing a trailer.
R When actively changing lane without swit ch‐
ing on the turn signal indicator.
R When the tyre pressure is too lo w.
Depending on the selected vehicle settings,
Ac tive Steering Assist may be una vailable.
Obser vethest atus display of Active Steering
Assist in the multifunction display
(/ page 226). &
WARNING Risk of accident if Active
St eering Assist unexpectedly stops func‐
tioning
If th e sy stem limitations of Active Steering
Assist are reached there is no guarantee that
th e sy stem will remain active or will keep the
ve hicle in lane. #
Alw ayske ep your hands on thesteering
wheel and obser vethe tra ffic carefull y. #
Alw aysst eer theve hicle paying atten‐
tion totraf fic conditions. &
WARNING Risk of accident if Active
St eering Assist unexpectedly inter venes
A malfunction in the de tection of lane mark‐
ings and objects can occu r.
This could cause unexpected steering inter‐
ve ntion. #
Steer according totraf fic conditions. Ac
tivating/deactivating Active Steering
Assist
Re quirements: R
ESP ®
is activated, but is not inter vening.
R Active Dis tance Assi stDISTRONIC is acti va‐
te d.
Multimedia sy stem:
4 © 5
Settings 5
Quick access #
Select aAct. Steer. Asst .
Fu nction of Active Lane Change Assi st
% The following function is countr y-dependent
and only available in conjunction with the
Driving Assi stance Package.
Ac tive Lane Change Assi stsupports the driver
when changing lanes byapplying steering torque
if th e driver operates a turn signal indicator.
Assis tance when changing lanes is pr ovided if all
th efo llowing conditions are me t:
R You are driving on a mo torw ay orroad with
multiple lanes in the direction of tr avel.
R The neighbouring lane is separated bya bro‐
ke n lane ma rking.
R Novehicle is de tected in the adjacent lane. 224
Driving and parking

R
Orange segments: obstacles at a di stance
between appr ox. 0.3 m and 0.6 m
R Red segments: obstacles at a very short
dis tance of appr ox. 0.3 m or less
Sy stem limits
Pa rking Assist PARKTRONIC does not necessa‐
ri ly take into account thefo llowing obs tacles:
R Obs tacles bel ow the detection range, e.g.
pe rsons, animals or objects.
R Obs tacles ab ovethe de tection range, e.g.
ove rhanging loads, overhangs or loading
ra mp s of lor ries.
The sensors must be free of dirt, ice and slush.
Otherwise, they may not function cor rectl y.
Clean the sensors regular ly,ta king care not to
scratch or damage them.
Ve hicles with trailer hitch: Parking Assist
PA RKTRONIC is deacti vatedfo rth ere ar zone
when you establish an electrical connection
between your vehicle and a trailer. Fu
nction of the passive side impact pr otec‐
tion
Pa ssive side impact pr otection is an additional
Pa rking Assist PARKTRONIC function which
wa rnsth e driver about obs tacles at the side of
th eve hicle. A warning is issued when obs tacles
are de tected between the front and rear de tec‐
tion range. In order for an object on the side to
be de tected, the sensors in the front and rear
bumper must firs t de tect the object while you
are driving past it.
During the parking procedure or manoeuvring,
objects are de tected as theve hicle drives past.
If yo usteer in the direction of a de tected obs ta‐
cle and there is a risk of a lateral collision, a
wa rning is issued. The segments on the sides
light up yellow or red, depending on the dis tance
to the obs tacle.
Segment colour depending on distance Colour Lateral distance
Ye llo wA pprox. 30 - 60 cm
Re dA pprox. < 30 cm In order
for lateral front or rear segments tobe
displa yed, theve hicle must firs t tr ave l a dis tance
of at least half of theve hicle length. Once the
ve hicle has tr avelled the length of theve hicle, all
of the lateral front and rear segments can be dis‐
pla yed. Ve
hicles without 360° Camera
1 Parking Assist PARKTRONIC is on ly opera‐
tional in the front and rear
2 Parking Assist PARKTRONIC is operational
and can also warnthe driver about obs tacles
at the side of theve hicle
3 Obstacle de tected at the front right (yellow)
and rear (red) Driving and parking
235

Ad
justing the warning tones of Parking
Assist PARKTRONIC
Multimedia sy stem:
4 © 5
Settings 5
Assistance
5 Camera & parking 5
Set warning tone
Ad justing the volume of thewa rning tones #
Select Warning tone volume. #
Set a value.
Ad justing the pitch of the warning tones #
Select Warning tone pitch. #
Set a value.
Specifying thest arting point for the warning
to nes
Yo u can specify whe ther thePa rking Assist
PA RKTRONIC warning tones should commence
when theve hicle is fur ther aw ay from an obs ta‐
cle. #
Select Warn early all-round. #
Activate or deacti vate the function. Ac
tivating/deactivating audio fadeout
Yo u can specify whe ther thevo lume of a media
source in the multimedia sy stem is tobe
re duced when Parking Assist PARKTRONIC
sounds a warning tone. #
Select Audio fadeout during warning tones. #
Activate or deacti vate the function.
Fu nction of Trailer Manoeuvring Assist
* NO
TEDama getotraile rswith a stabilisa‐
tion device against swerving In
the case of trailers with a stabilisation
device against swerving, the trailer or trailer
to w hit chcould be damaged. #
If a trailer coupling wi thTrailer Manoeu‐
vring Assist is used, on lyuse trailers
without a stabilisation device against
swerving. *
NO
TEDama gedue to ov erhanging loads
in front or dr awbar ins tallations The
vehicle and the trailer may be damaged
during manoeuvring due toove rhanging
loads at the front of the trailer or dr awbar
ins tallations. #
Pay attention to overhanging loads or
dr aw bar ins tallations while manoeu‐
vring. Tr
ailer Manoeuv ring Assi stassists you when
re ve rsing with a trailer. By means of a turning
angle sensor in the trailer coupling, Trailer
Manoeuv ring Assi stmonitors the articulation
angle between theve hicle and trailer and
adjusts it toa specified value.
Yo u can either en terth e articulation angle value
directly via the multimedia sy stem or use a
st ra ightening manoeuvre. When car rying out a
st ra ightening manoeuvre, the sy stem calculates
th e articulation angle automatically and stra ight‐
ens theve hicle/trailer combination tothe trail‐
er's cur rent di rection. 238
Driving and pa rking

Tr
ailer Manoeuv ring Assi stmust be taught-in
before it can adjust the articulation angle
(/ page 239).
Obser vethe no tes on towing a trailer
(/ page 262).
Sy stem limits
The sy stem may be impaired or may not function
in thefo llowing situations:
R The gradient is more than appr oximately
15 %.
Using Trailer Manoeuvring Assist
Re quirements:
R The vehicle has been star ted.
R A trailer has been de tected.
Te aching-in Trailer Manoeuvring Assist #
Drive forw ards a short dis tance wi th the car/
trailer combination.
The comple tedte ach-in process is shown in
th e media displa y. Using
Trailer Manoeuvring Assist #
Press button 1. #
Engage reve rsege ar k.
The camera image is shown in the media dis‐
pla y. #
Adjust the articulation angle (/ page 239).
or #
Activate thest ra ightening manoeuvre
(/ page 239). #
Accelerate and brake as requ ired.
% Pay attention toyour sur roundings and be
re ady tobrake at all times.
Ad justing Trailer Manoeuvring Assist (multi‐
media sy stem)
Re quirements:
R The ignition and engine are on, or theve hicle
is operational.
R The zero point of the car/t railer combination
has been taught-in bybrief lydriving forw ards
(/ page 238).
R Trailer Manoeuv ring Assi sthas been star ted
( / page 239).
R The vehicle is stationar y.
R The gradient is less than appr oximately 15%.
Ad justing the articulation angle of the trailer #
Select . Driving and pa
rking 239

The articulation angle can be
changed on the
media display or on theto uchpad. #
Swipe left or right tochange the articulation
angle.
% The maximum articulation angle depends on
th e length of the trailer. This is calculated by
th e sy stem bydriving theve hicle forw ards,
including cornering. Before the length of the
trailer has been calculated, the maximum
articulation angle is appr oximately 23°. The
longer the trailer is, the higher the maximum
articulation angle (max. appr oximately 60°). #
Set the desired articulation angle.
When the articulation angle entered has been
re ached, the dr awbar is loc kedby the sy stem so
th at the angle is maintained.
Ac tivating the stra ightening manoeuvre #
Select .
The sy stem calculates the articulation angle
in such a wayth at the direction of the trailer
at the time of activation is maintained. There is a short counter
steering mo vement of the
trailer while theve hicle is reve rsed, which
th en guides it back tothe desired line. In this
wa y,theve hicle is aligned stra ight with the
trailer and, at the same time, the direction of
th e trailer is maintained. Re
versing camera Fu
nction of there ve rsing camera If
yo u ha veactivated the function in the multime‐
dia sy stem (/ page247), the image from
re ve rsing camera 1is shown in the media dis‐
play when there ve rsege ar is engaged. Dynamic
guide lines show the path theve hicle will take
with thesteering wheel in its cur rent position. 240
Driving and pa rking

This helps
youto orient yourself and to avoid
obs tacles when reve rsing.
The reve rsing camera is only an aid. It is not a
substitute foryo ur attention tothe sur roundings.
The responsibility for safe manoeuvring and
parking remains with you. Make sure that there
are no persons, animals or objects etc., in the
manoeuvring area while manoeuvring and park‐
ing.
The guide lines in the media display show the
dis tances to yourvehicle. The dis tances dis‐
pl ay ed only apply toroad le vel.
Depending on theve hicle equipment, you can
select from thefo llowing vie ws:
R Normal view
R Wide-angle view
R Trailer view
The area behind theve hicle is displa yed as a
mir ror image, as in the inside rearview mir ror.
Ve hicles without Active Parking Assist
The following camera vie wsare available in the
multimedia sy stem: Normal view
1 Yellow guide line, vehicle width (driven sur‐
fa ce) depending on the cur rent steering
wheel angle (dynamic)
2 Yellow guide line at a dis tance of appr ox‐
imately 1.0 m from there ar area
3 Yellow lane marking the course the tyres will
ta ke atthe cur rent steering wheel angle
(dynamic)
4 Bumper
5 Red guide line at a dis tance of appr oximately
0.3 m from there ar area Wi
de-angle view Tr
ailer view (vehicles with a trailer hit ch)
1 Yellow guide line, locating aid Driving and parking
241