
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 adap tation can be config‐
ured in the multimedia sy stem (/ page249).
The following route events are take n into
account:
R Bends
R T-junctions, roundabouts and tollst ations
R Turns and exits
R Traf fic jams ahead (only wi thLive Traf fic
( / page 404))
% 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 automaticall y.Ifthe
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. 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, forex ample unclear roads,
lane nar rowing, wetro ad sur faces, snow or ice,
or when driving wi tha trailer, the speed adjust‐
ment 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 248
Driving and pa rking

R
Ifth e accelera tor pedal is depressed
R Intheeve nt of electronical lydispla yed
speed limitations #
Adjust the speed tothe traf fic situation. Setting
route-based speed adaptation 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 247). 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 switches
topassive mode. The sy stem pr ovides
no support in this case. During the transition
from active topassive status, theà symbol is
shown as enlar ged and flashing. Once the sys‐
te m is passive, theà symbol is shown as
gr ey inthe multifunction displa y.
Ste ering and touch de tection
The driver is requiredtokeep their hands on the
st eering wheel at all times and be able tointer‐
ve ne at any time tocor rect the course of the
ve hicle and keep it in lane. The driver must
ex pect a change from active topassive mode or
vice versa at any time. Driving and parking
249

If
th e sy stem de tects that the driver has not
st eered theve hicle for a considerable period of
time or has remo vedth eir hands from thesteer‐
ing wheel, an optical warning is given firs t. Dis‐
pl ay 1 appears in the multifunction displa y.If
th e driver still does not steer theve hicle, or
gives no confirmation tothe sy stem, a warning
to ne sounds in addition tothe visual warning
message.
The warning is not issued, or is stopped, when
th e driver gives confi rmation tothe sy stem:
R The driver steers theve hicle.
R The driver presses a steering wheel button or
operates Touch Control.
If Ac tive Steering Assist de tects that a sy stem
limit has been reached, a visual warning is
issued and a warning tone sounds.
Ac tive Steering Assist is only an aid. The driver is
re sponsible forth e dis tance totheve hicle in
front, forve hicle speed, for braking in good time
and forst ay ing in lane. Before changing lanes,
th e driver must make sure that the neighbouring
lane is free (glance overth e shoulder). Sy
stem limits
Ac tive Steering Assist has a limited steering tor‐
qu efo r lateral guidance. In some cases, the
st eering inter vention is not su fficient tokeep the
ve hicle in the lane or todrive thro ugh exits.
The sy stem may be impaired or may not function
in thefo llowing ins tances:
R The reis poor visibilit y,e.g. due tosno w,rain,
fo g, heavy spr ay,greatly varying light condi‐
tions or strong shado wsonthe car riag ewa y.
R There is glare, e.g. from oncoming traf fic,
di re ct sunlight or reflections.
R Insuf ficient road illumination.
R The windsc reen is dirty, mis ted up, damaged
or co vered in the vicinity of the camera, e.g.
by ast icke r.
R No, or se veral, unclear lane markings are
present for one lane, or the markings change
qu ickl y,e.g. in a const ruction area or junc‐
tions.
R The lane markings are wornaw ay, dark or
co vered up, e.g. bydirt or sno w. 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 253). 250
Driving and parking

&
WARNING Risk of accident if Active
St eering Assist unexpectedly stops func‐
tioning
If th e sy stem limits of Active Steering Assist
are reached there is no guarantee that the
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. R
The driven speed is between 80 km/h and
18 0 km/h.
R Active Lane Change Assi stis switched on in
th e multimedia sy stem.
R Active Steering Assist is switched on and
active. If no
vehicle is de tected in the adjacent lane and
a lane change is permit ted, the lane change
begins af terth e driver has activated the turn sig‐
nal indicator. This is shown tothe driver with a
green ar row 2 next tothesteering wheel sym‐
bol. The Lane change to the left message also
appears, forex ample. If Active Lane Change
Assi sthas been activated with the turn signal Driving and parking
251

Ac
tivating/deactivating Active Lane Change
Assi st
Multimedia sy stem:
4 © 5
Settings 5
Assistance
5 Active Lane Change Assist #
Activate or deacti vate the function.
Fu nction of Active Eme rgency Stop Assist
If th e driver continually ignores the visual or
acoustic warning toput their hands on thesteer‐
ing wheel, theBeginning emergency stop mes‐
sage appears in the multifunction displa y.Ifthe
driver still does not respond, Active Dis tance
Assi stDISTRONIC reduces the speed. The vehi‐
cle is decelerated in stages toast andstill.
Depending on the count ry, at speeds below
60 km/h the hazard warning lights switch on
automaticall y.
When theve hicle is stationar y,thefo llowing
actions are car ried out:
R theve hicle is secured with the electric park‐
ing brake
R Active Dis tance Assi stDISTRONIC is ended
R theve hicle is unloc ked R
if possible, an emer gency call is placed to
th e Mercedes-Benz emer gency call centre
The driver can cancel the deceleration at any
time byper form ing one of thefo llowing actions:
R steering
R braking or accelerating
R pressing a steering-wheel button
R operating Touch Control
R activating or deactivating Active Dis tance
Assi stDISTRONIC Overvi
ewofActive Di stance Assist
DIST RONIC displa ysinthe instrument clus‐
ter The assis
tance graphic and thest atus display
show thest atus of thefo llowing functions in the
instrument clus ter:
R Active Dis tance Assi stDISTRONIC
R Route-based speed adap tation
R Active Steering Assist Assistant display
1
Route-based speed adap tation: type of route
eve nt
2 Vehicle in front
3 Distance indica tor
4 Set specified di stance
5 Active Lane Change Assi stlane change dis‐
play Driving and parking
253

2
Red guide line at a dis tance of appr oximately
0.3 m from the ball head of the trailer hitch
3 Ball head of the trailer hitch
Ve hicles with Active Parking Assist
The following camera vie wsare available in the
multimedia sy stem: Normal view
1 Yellow lane marking the course the tyres will
ta ke atthe cur rent steering wheel angle
(dynamic)
2 Yellow guide line, vehicle width (driven sur‐
fa ce) depending on the cur rent steering
wheel angle (dynamic) 3
Red guide line at a dis tance of appr oximately
0.3 m from there ar area
4 Yellow warning indicator of Parking Assist
PA RKTRONIC: obstacles at a dis tance
between appr oximately 0.6 m and 1.0 m
5 Redwa rning display of Parking Assist
PA RKTRONIC: obstacles are very close
(appr oximately 0.3 m or less)
6 Orange warning display of Parking Assist
PA RKTRONIC: obstacles are a medium dis‐
ta nce away (between appr oximately 0.3 m
and 0.6 m)
% Ifth e entire sy stem fails, the segments of
th ewa rning display are shown in red. The
indicator lamp on thePA RKTRONIC but ton
lights up and theé symbol appears in
th e multifunction displa y.
If th e sy stem fails at there ar, the display of
th e segments changes as follo ws:
R The rear segments are shown in red
when reve rsing.
R The rear segments are hidden when driv‐
ing forw ards. If
Pa rking Assist PARKTRONIC is deacti vated,
th ewa rning display fades out (/ page 260). Wi
de-angle view Driving and parking
265

persons, animals or objects
etc. are in the
manoeuvring range.
A risk of a collision may arise in thefo llowing sit‐
uations, forex ample:
R Ifth e driver mixes up the accelera tor and
brake pedals.
R Ifth e wrong gear is selec ted.
Drive AwayAssi stis active under thefo llowing
conditions:
R IfPa rking Assist PARKTRONIC is activated.
R Every time thege ar is changed tok orh
when theve hicle is at a standstill.
R Ifth e de tected obs tacle is less than appr ox.
1. 0 m away.
R Ifth e manoeuvring assis tant function is acti‐
va ted in the multimedia sy stem.
Sy stem limits
The per form ance of Drive AwayAssi stis limited
on inclines.
When driving with a trailer, Drive AwayAssi stis
not available. %
Also obse rveth e sy stem limits of Parking
Assist PARKTRONIC (/ page 258).
Fu nction of Cross Traf fic Alert
% Also read the instructions on Blind Spot
Assist (/ page 282). Ve
hicles with Blind Spot Assis t:Cross Traf fic
Ale rtcan warndrivers of any crossing tra ffic
when reve rsing out of a parking space. The radar
sensors in the bumper also monitor the area
adjacent totheve hicle. If a critical situation is
de tected, symbol 1appea rsinthe media dis‐
pla y.Ifth e driver does not respond tothewa rn‐
ing, theve hicle's brakes can be applied automat‐
ically. If
th era dar sensors are obstructed byvehicles
or other objects, de tection is not possible.
Cross Traf fic Alert is acti veunder thefo llowing
conditions:
R if Blind Spot Assist is activated.
R ifth eve hicle is reve rsing at walking pace.
R Ifth e manoeuvring assis tant function is acti‐
va ted in the multimedia sy stem.
Sy stem limits
Cross Traf fic Alert is not available on inclines.
Cross Traf fic Alert is not available when driving
with a trailer.
% Also obse rveth e sy stem limits of Active
Blind Spot Assi st (/ page 282).
Ac tivating/deactivating manoeuv ring assis‐
tance
Multimedia sy stem:
4 © 5
Settings 5
Assistance
5 Camera & parking #
Activate or deacti vate Manoeuvring assis-
tance. 276
Driving and pa rking

Setting Speed Limit Assist
Multimedia sy
stem:
4 © 5
Settings 5
Assistance
5 Speed Limit Assist
Ad justing the type of warning #
Select Visual & audible ,Visual orNone.
Ad justing the warning threshold
This value de term ines the speed at which a
wa rning is issued when exceeded. #
Select Warning threshold. #
Set the desired speed.
% If one of thefo llowing sy stems is activated,
th e speed de tected can be manually adop ted
as the speed limit:
R Active Dis tance Assi stDISTRONIC
R Cruise control
R Variable limiter
Fu rther information (/ page245). Tr
af fic Sign Assist Fu
nction of Traf fic Sign Assist Tr
af fic Sign Assi stdetects traf fic signs wi thmul‐
tifunction camera 1. It assistsyo uby display‐
ing de tected speed limits and overtaking restric‐
tions in the instrument clus ter and optionally in
th e head-up display or cent ral displa y.
Since Traf fic Sign Assi stalso uses the data
st ored in the navigation sy stem, it can update
th e display in thefo llowing situations without
de tecting traf fic signs:
R When theve hicle changes roads, e.g. slip
ro ad or mo torw ay ex it. R
When a village or town boundary which is
st ored in the digital map is passed.
If th e sy stem de tects that you are driving on to a
section of road in the wrong direction of tr avel, it
triggers a warning.
The camera also de tects traf fic signs wi th a
re striction indicated byan additional sign (e.g.
when wet).
Tr af fic Sign Assi stis only an aid. The driver is
re sponsible forke eping a safe dis tance from the
ve hicle in front, forve hicle speed and for braking
in good time.
Wa rning when the maximum permissible
speed is exceeded
The sy stem can warnyou if you unin tentionally
exc eed the maximum permissible speed. Todo
th is, you can specify in the multimedia sy stem
by how much the maximum permissible speed
can be exceeded before a warning is issued. Yo u
can specify whe ther thewa rning is tobe just a
visual warning or an acoustic one as well. 280
Driving and parking