The system is not
available and must be reactiva-
te d in thefo llowing situations:
R Active Distance Assist DISTRONIC and Active
St eering Assist werealready activated before
entering the mo torw ay.
R The system brie0y does not de tect thero ad
yo u are on as a mo torw ay or a mo torw ay-like
ro ad, e.g. on a mo torw ay junction.
As soon as Active Lane Change Assist de tects a
suitable road, you can reactivate it with J,
M orN. Displa
Displa y in t
y in the dr
he dr iv
iver's displa
er's displa y in t
y in the
heAssistance
menu
menu 1
Green ar row:lanechange initiated
2 Red ar row: lanechange cancelled
When Active Lane Change Assist is available, the
± display appears along with green ar rows in
th e driver's displa y.Ifth e system has been activa-
te d but is not cur rently available, the± display appears along with
grey arro ws inthe driver's dis-
pla y.
If no vehicle or obs tacle is de tected in the adja-
cent lane and a lane change is permitted, the lane
ch ange begins aTer the driver has indicated
brie0y. The lane change is shown tothe driver
with a 0ashing green ar row next tothe±
steering wheel symbol. Green ar row Assistance is
displa yed in the appropriate adjacent lane in the
1 menu in the driver's displa y.Themessage, for
Lane change to the left example, also appears.
Ac tive Lane Change Assist can be cancelled in
va rious situations, including thefo llowing:
R Change in the sur rounding conditions (e.g.
de tected obs tacle).
R The driver remo vesth eir hands from the steer-
ing wheel.
R The driver steers with too much forc e or in the
opposite direction.
R The driver mo vesth e turn signal indicator in
th e opposite direction.
R Active Distance Assist DISTRONIC or Active
St eering Assist is deactivated. Driving and parking
243
243
R
The vehicle cann otmake the lane change as
planned.
Cancellation of Active Lane Change Assist is dis-
pla yed as follo ws:
R The ar row in the selected direction of tr avel
turns red.
R A cor responding message will also appear in
th e driver's displa y.
R In cer tain circumstances a warning tone
sounds. &
W
WARNI NG
ARNI NGRisk of accident when changing
lane toan occupied adjacent lane
Lane Change Assist cann otalw ays clear ly
de tect if the adjacent lane is free.
The lane change might be initiated although
th e adjacent lane is not free. #
Before changing lanes, make sure that
th e neighbouring lane is free and there is
no danger toother road users. #
Monitor the lane change. &
W
WARNING
ARNING Risk of accident if Lane Change
Assist unexpectedly stops functioning
If th e system limitations for Lane Change
Assist ha vebeen reached, there is no guaran-
te eth at the system will remain active.
Lane Change Assist cannot then assist youby
applying steering torque. #
Alwa ys monitor the lane change and
ke ep your hands on the steering wheel.
Obser vethe tra1c conditions and steer
and/or brake if necessar y. Syst
Syst
em limits
em limits
The system limitations of Active Steering Assist
apply toActive Lane Change Assist
(/ page 238).
The system may also be impaired or may not func-
tion in thefo llowing situations:
R The sensors are damaged, co vered or dirty
(/ page 217).
R The exterior lighting sho ws adefect. R
The system does not de tect a suitable road,
fo re xamp le, in tight bends or shortly aTer a
slip road.
R The vehicle is on a construction site.
% The Active Lane Change Assist sensors adjust
automatically while a cer tain distance is being
driven aTer theve hicle has been deli vered.
Ac tive Lane Change Assist is una vailable or
only partially available during this teach-in
process, and no ar rows are displ ayed next to
th eØ Active Steering Assist symbol.
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 217).
Selecting A
Selecting A ctiv ctive Lane Chang
e Lane Chang e Assist
e Assist
Multimedia system:
4 © 5
Settings 5
Assistance
5 Driving #
Select Aktiver Spurwechsel-Assistent (Active
Lane Change Assist). 244
244
Driving and parking
conditions,
rain, sno w,fog, swirling dust or
heavy spr ay.
R Ifth ere is glare, e.g. from oncoming tra1c,
direct sunlight or re0ections.
R Ifth ere is dirt on the windscreen in the vicinity
of the multifunction camera or if the camera is
misted up, damaged or obscured.
R If tra1c signs are di1cult todetect, e.g. due
to dirt, sno w,ice, insu1cient lighting or driving
to o close totheve hicle in front, or because
th ey are co vered, faded, damaged, badly posi-
tioned or twisted.
R Digital LED tra1c signs may not be de tected
cor rectly or at all due to technical factors,
suchas transmission frequency.
R If signs or thero ad la yout is ambiguous, e.g.
tra1c signs in roadwor ks, at exits and ramp s,
in neighbou ring lanes or parallel roads.
R If signs do not conform tothe standard.
R If signs or road la youts are speci/c tothe
count ry,fo re xamp le, at or be yond construc-
tion sites. R
ATer sharp turns and tight bends, when tra1c
signs are outside the camera's /eld of vision.
R Ifyo uove rtake vehicles with tra1c signs
which are a1xed or attached tothem.
R Ifyo u are using transport equipment secured
with a trailer coupling, suc has a bicycle rack,
th e system may react torestrictions for car/
trailer combinations.
Se
Se tting Speed Limit Assist tting Speed Limit Assist
Multimedia system:
4 © 5
Settings 5
Assistance
5 Assistance 5
Speed Limit Assist
Se
Se tting an additional audible indication
tting an additional audible indication #
Activate or deactivate the function.
Se
Se tting t
tting t he w
he war
arning t
ning t hr
hreshold
eshold
This value de term ines the speed at which a warn-
ing is issued when exceeded. #
Select Warning threshold. #
Set the desired speed. %
When one of thefo llowing systems is active,
th e de tected speed can be manual lyadop ted
as the speed limit:
R Active Distance Assist DISTRONIC
R Cruise control
R Variable limi ter
Fu rther information (/ page 233). T
T
r
ra1c
a1c Sign Assist
Sign Assist F
F
unction of
unction of Tr
Tra1c
a1c Sign Assist
Sign Assist
% This function is an on-demand feature
(/ page 24).
Tr a1c Sign Assist de tects tra1c signs with the
multifunction camera and compares this with
information in the digital navigation map. It assists
yo uby displaying de tected speed limits and over-
ta king restrictions in the driver's display and in
th e head-up displa y.The system can issue a warn-
ing when youex ceed the maximum permissible
speed.
In some countries, the system can pr ovide you
with fu rther functions and can warnyou when you Driving and parking
251 251
yo
u are about todrive thro ugh a red light uninten-
tionall y.
The following conditions must be ful/lled:
R Several tra1c lights ha vebeen de tected.
R All tra1c lights de tected are red.
R Atleast one of there d tra1c lights de tected is
on the front passenger side beside theve hi-
cle's own lane.
R The tra1c lights are in thefo llowing sequence
(from topto bottom): red, yello w, green.
% Ifth e function is available, you can activate or
deactivate thewa rnings at pedestrian cross-
ings, stop signs and red lights in theTra1c
Sign Assist menu under Further warnings
(/ page 254).
Syst
Syst em limits
em limits
The system may be impaired or may not function
particular lyin thefo llowing situations:
R If visibility is poor, e.g. due toinsu1cient illu-
mination of thero ad, highly variable shade
conditions, rain, sno w,fog, swirling dust or
heavy spr ay. R
Ifth ere is glare, e.g. from oncoming tra1c,
direct sunlight or re0ections.
R Ifth ere is dirt on the windscreen in the vicinity
of the multifunction camera or if the camera is
misted up, damaged or obscured.
R If tra1c signs are di1cult todetect, e.g.
because they are dirty, co vered, faded, co v-
ered with ice, damaged, badly positioned,
poor lylit or twisted.
R Active tra1c signs with LED displa ysmay not
be de tected cor rectly or at all due to technical
fa ctors, suc has transmission frequency.
R Ifth e information on the navigation system's
digital map is incor rect, incomple teor out of
date.
R If signs or thero ad la yout is ambiguous, e.g.
tra1c signs in roadwor ks, at exits and ramp s,
in neighbou ring lanes or parallel roads.
R If signs do not conform tothe standard.
R If signs or road la youts are speci/c tothe
count ryand deviate from thero ute guidance
in the navigation system, e.g. at or be yond
construction sites. R
ATer sharp turns and tight bends, when tra1c
signs are outside the camera's /eld of vision.
R Ifyo uove rtake vehicles with tra1c signs
which are a1xed or attached tothem.
R Ifyo u are using transport equipment secured
to theve hicle with a trailer coupling, suc has a
bicycle rack ,re strictions for car/trailer combi-
nations may be considered valid if applicable.
Se Se tting tting Tr
Tra1c
a1c Sign Assist
Sign Assist
Multimedia system:
4 © 5
Settings 5
Assistance
5 Assistance 5
Traffic Sign Assist
A
A ctiv
ctiv ating or deactiv
ating or deactiv ating t
ating the speed w
he speed w ar
arning
ning #
Activate or deactivate Speed limit warning .
A
A ctiv
ctiv ating or deactiv
ating or deactiv ating furt
ating furt her functions of Tr
her functions of Traf-
af-
f
f ic Sign Assist
ic Sign Assist #
Switch Further warnings orAdditional warn-
ing tone on or o..
Se Se tting t tting t he w
he war
arning t
ning t hr
hreshold
eshold
This value de term ines the speed at which a warn-
ing is issued when exceeded. 254
254
Driving and parking
Display in
the driver's display in theAssistance menu
If a vehicle is de tected at speeds abo veappr ox-
imately 12 km/h and this vehicle enters thewa rn-
ing range immedia tely aTer wards, thewa rning
lamp in the cor responding outside mir ror lights up
re d. In theAssistance menu,the lamp in outside
mir ror1 also lights up red, and the lane in which
th eve hicle is de tected is hatched out.
If a vehicle is de tected in thewa rning range and
yo u switch on the turn signal indicator in the cor-
re sponding direction, a double warning tone
sounds once, and thewa rning lamp 0ashes red in
th e cor responding outside mir ror.Re dra dar wav
es2 are displa yed next toyour vehicle in the
assis tance graphic.
If th e turn signal indicator remains on, the display
in the outside mirror 0ashes for all other de tected
ve hicles, but no fu rther warning tone sounds. If
yo uove rtake a vehicle quickl y,no warning is
given.
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 217). &
W WARNING
ARNING Risk of accident despite Blind
Spot Assist
Blind Spot Assist does not react tovehicles
approaching and overtaking you at a greatly
di.erent speed.
Blind Spot Assist cannot warndrivers in this
situation. #
Always pay careful attention tothe tra1c
situation and maintain a safe distance at
th e side of theve hicle. Exit w Exit w
ar
arning
ning
The exitwa rning is an additional function of Blind
Spot Assist and Active Blind Spot Assist and can
wa rnvehicle occupants attem pting tolea vea sta-
tionary vehicle about approaching vehicles. &
W
WARNING
ARNING Risk of accident despite exit
wa rning
The exitwa rning neither reacts tostationa ry
objects nor topersons or road users
approaching you at a greatly di.ering speed.
The exitwa rning cannot warndrivers in these
situations. #
Always pay particular attention tothe
tra1c situation when opening the doors
and make sure there is su1cient clear-
ance. If a
vehicle is de tected in the monitoring range,
th ere dwa rning lamp lights up in the cor respond-
ing outside mir ror.
If a vehicle occupant pulls the door handle on the
side of thewa rning, a warning tone sounds twice
and the ambient lighting in there spective door 256
256
Driving and parking
and
thewa rning lamps in the cor responding out-
side mir ror 0ash red.
% V
V ehicles wit
ehicles wit h ambient lighting:
h ambient lighting: theWarning
assistance ofthe ambient lighting can be
activated and deactivated (/ page 153).
% The warning assistance can di.er depending
on the equipment and may vary according to
th e setting.
The exitwa rning is only available when Blind Sp ot
Assist is activated and up toa maximum of three
minutes aTer theve hicle has been switched o..
The exitwa rning is no longer available once the
wa rning lamp in the outside mir ror 0ashes three
times.
The exitwa rning is only an aid and not a substi-
tute forth e attention of vehicle occupants. The
re sponsibility for opening and closing the doors
and for leaving theve hicle remains with theve hi-
cle occupants. Syst
Syst em limits em limits
Blind Spot Assist and Active Blind Spot Assist may
be limited in thefo llowing situations, in particular:
R ifth ere is dirt on the sensors or the sensors
are obscured
R in poor visibility, e.g. due tofog, heavy rain or
snow
R ifth ere are nar row vehicles, e.g. bicycles or
mo torbikes
R ifth ero ad has very wide or nar row lanes
R ifve hicles are not driving in the middle of their
lane
Wa rnings may be issued in er ror when driving
close tocrash bar riers or similar continuous lane
borders. Alw ays make sure that there is su1cient
distance tothe side forot her tra1c or obs tacles.
Wa rnings may be inter rupted when driving along-
side long vehicles, forex ample lor ries, for a pro-
longed time.
Blind Spot Assist and Active Blind Spot Assist are
not operational when reve rsege ar is engaged. Blind Sp
otAssist and Active Blind Spot Assist are
not operational if transport equipment, forex am-
ple a trailer or bicycle rack , is attached tothe
trailer hitch and the electrical connection has
been cor rectly es tablished.
Ad ditionall y,theex itwa rning may be limited in the
fo llowing situations:
R when the sensors are co veredby adjacent
ve hicles in nar row parking spaces
R when people approach theve hicle
R intheev ent of stationary or slo wlymoving
objects
F
F unction of t unction of t he br
he brak
ake application of A
e application of A ctiv
ctive Blind
e Blind
Spo
Spo t Assist
t Assist
% The brake application function is only availa-
ble forve hicles with a Driving Assis tance
Pa ckage.
If Ac tive Blind Spot Assist de tects a risk of a side
impact in the monitoring range, a cou rse-cor rect-
ing brake application is car ried out. This is
designed tohelp youavo id a collision. Driving and parking
257
257
A
A
ctiv
ctiv ating/deactiv
ating/deactiv ating Blind Spo
ating Blind Spo t Assis
t Assist or
t or
A
A ctiv
ctiv e Blind Spo
e Blind Spo t Assist
t Assist
Multimedia system:
4 © 5
Settings 5
Assistance
5 Avoid contact #
Activate or deactivate Active Blind Spot
Assist . A
A
ctiv
ctiv e Lane K
e Lane K eeping Assist
eeping Assist F
F
unction of A
unction of A ctiv
ctive Lane K
e Lane K eeping Assist
eeping Assist
Ac tive Lane Keeping Assist monitors the area in
front of your vehicle bymeans of the multifunction
camera (/ page 217) and can warnyou before
yo u lea veyour lane unintentionall y.The system
can guide you back into your lane thro ugh a
course-cor recting steering inter vention and addi-
tionally warnsyo u with vibration pulses in the
stee ring wheel. Active Lane Keeping Assist is
av ailable in the speed range between 60 km/h
and 200 km/h. The system can inter
vene in thefo llowing situa-
tions:
R Active Lane Keeping Assist de tects a lane
marking.
R One of your front wheels goes over a lane
marking.
If yo u activate the turn signal indicator, a steering
inter vention does not occur on the cor responding
side.
If yo u lea vethe lane without activating the turn
signal indicator, but danger of a collision with a
moving obstacle is de tected in your lane, a steer-
ing inter vention does not occur.
V V ehicles wit
ehicles wit h Blind Spo
h Blind Spo t Assist or Dr
t Assist or Dr iving Assis-
iving Assis-
t
t ance P
ance P ack
ackag
age:
e: ifth e system de tects an obs tacle,
such as ano ther vehicle in the adjacent lane, a
steering inter vention will occur rega rdless of the
turn signal indica tor. Display
1will appear in the driver's display and a
wa rning tone will sound in thefo llowing situations:
R A steering inter vention byActive Lane Keeping
Assist lasts longer than appr oximately ten sec-
onds.
R The system ca rries out two or more steering
inter ventions within app roximately three
minutes without any steering inter vention from
th e driver.
In theAc tive Lane Keeping Assist settings, you
can set the sensitivity of the system and set the
le ve l of support. Additionall y,yo u can set whe ther
th e system should react todiscontinuous lane Driving and parking
259
259
markings or only continuous lane markings
(/
page 261).
S S t
tatus display
atus display s f
s for A
or A ctiv
ctive Lane K
e Lane K eeping Assist
eeping Assist
ï Whit
White:
e:Ac tive Lane Keeping Assist is deac-
tivated.
ï Y
Yellow
ellow :
:th ere is a malfunction. Please also
obser vethe display messages.
ð Grey
Gr ey:
:Ac tive Lane Keeping Assist is activa-
te d, but not operating.
ð Gr
Green:
een: Active Lane Keeping Assist is acti-
va ted and operating. If the system is opera-
tional on only one side, the lane marking is
shown in green on the cor responding side.
ð R
Red:
ed: Active Lane Keeping Assist has gui-
ded you back into your lane with a course-
cor recting steering inter vention. The status
display will 0ash if there is also a haptic
wa rning in the steering wheel. The lane
marking is shown in red only on the side
fo r which there is a warning.
V
V ehicles wit
ehicles wit hout Dr
hout Driving Assist
iving Assist ance P
ance Pack-
ac k-
ag
ag e:
e: if bo thlane markings are simultane-
ously shown in red in the status displa y, Ac
tive Lane Keeping Assist has initiated an
emer gency stop (/ page 241).
A A ctiv ctiv e Lane Chang
e Lane Chang e Assis
e Assist displat displa y in t
y in the "Assis-
he "Assis-
t
t ance" menu
ance" menu If
th e front wheel of theve hicle drives over a
de tected lane marking, this will be highlighted red
in theAssistance menu inthe driver's displa y.
% V
Vehicles wit
ehicles wit h activ
h active ambient lighting:
e ambient lighting: ifWarn-
ing assistance is activated,theAc tive Lane
Ke eping Assist warning is also accompanied
by ambient lighting (/ page 153). Syst
Syst
em limits
em limits
In thefo llowing situations, no lane-cor recting
steering inter vention occurs but rather a warning
in the steering wheel, depending on the situation:
R You clear lyand actively steer, brake or accel-
erate.
R If a driving saf ety sy stem inter venes, such as
ESP ®
,Ac tive Brake Assist or Active Blind Spot
Assist.
R You ha veadop ted a sporty driving style with
high cornering speeds or high rates of acceler-
ation.
R When ESP ®
is deacti vated.
R If transport equipment, fore xamp le a trailer or
bicycle rack , is attached tothe trailer hitch
and the electrical connection has been cor-
re ctly es tablished.
R If a loss of tyre pressure or a defective tyre
has been de tected and displa yed. 260 260
Driving and parking