Page 249 of 541

appears in
the driver's display and then automati-
cally goes out aTer a short time.
If th e autonomous braking function or the situa-
tion-dependent braking assistance is triggered,
additional pr eventive measures for occupant pro-
te ction (PRE- SAFE®
) may also be initiated. &
W WARNING
ARNING Risk of an accident caused by
limited de tection per form ance of Active
Brake Assist
Ac tive Brake Assist cannot alw ays clear lyiden-
tify objects and complex tra1c situations.
In such cases, Active Brake Assist might:
R Give a warning or brake without reason
R Not give a warning or not brake
Ac tive Brake Assist is only an aid. The driver is
re sponsible for maintaining a su1ciently safe
distance totheve hicle in front, vehicle speed
and for braking in good time. #
Always pay careful attention tothe tra1c
situation; do not relyonActive Brake
Assist alone. #
Be prepa redto brake or swer veif neces-
sar y. If
Ac tive Brake Assist is deactivated or the func-
tions are restric ted, e.g. due toactivation of
ano ther driving system, theê display message
appears in the driver's displa y.
If th e system is una vailable due todirty or dam-
aged sensors or due toafa ult, or if the functions
are restric ted, theÓ warning lamp appears in
th e driver's displa y.
Also obser vethe system limits of Active Brake
Assist.
The individual subfunctions are available in thefo l-
lowing speed ranges:
Dist Dist ance w ance w ar
arning function
ning function
Yo u are warned bythe distance warning function
from appr oximately 30 km/h if, over se veral sec-
onds, the distance maintained totheve hicle tr av-
elling in front is insu1cient forth e driven speed.
In this case, theL warning lamp in the driver's
display lights up. If the distance totheve hicle in
front continues todecrease at higher speeds, the
L warning lamp begins to0ash. Collision w
Collision w ar
arning
ning
Collision warning can assist you in thefo llowing
situations from appr oximately 7 km/h with an
intermittent warning tone and theL warning
lamp.
Ve hicles without Driving Assis tance Package:
R Atspeeds up toappr oximately 250 km/h
when approaching vehicles ahead.
R Atspeeds up toappr oximately 80 km/h when
approaching stationary vehicles, pedestrians
wa lking in the direction of tr avel and cyclists
ahead.
R Atspeeds up toappr oximately 70 km/h when
approaching crossing pedestrians and
cyclists.
R Atspeeds up toappr oximately 60 km/h when
approaching stationary pedestrians and
cyclists.
Ve hicles with Driving Assis tance Package:
R Atspeeds up toappr oximately 250 km/h
when approaching vehicles ahead. 246 246
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R
Atspeeds up toappr oximately 120 km/h
when approaching crossing vehicles, pedes-
trians and cyclists.
R Atspeeds up toappr oximately 100 km/h
when approaching stationary vehicles.
R Atspeeds up toappr oximately 80 km/h when
approaching cyclists ahead.
R Atspeeds up toappr oximately 70 km/h when
approaching stationary pedestrians and
cyclists.
A A ut
ut onomous br
onomous br aking function
aking function
If th eve hicle is tr avelling at speeds abo veappr ox-
imately 7 km/h, the autonomous braking function
may inter vene in thefo llowing situations:
Ve hicles without Driving Assis tance Package:
R Atspeeds up toappr oximately 250 km/h
when approaching vehicles ahead.
R Atspeeds up toappr oximately 80 km/h when
approaching cyclists ahead, pedestrians walk-
ing in the direction of tr avel and stationary
ve hicles. R
Atspeeds up toappr oximately 70 km/h when
approaching crossing pedestrians and
cyclists.
Ve hicles with Driving Assistance Package:
R Atspeeds up toappr oximately 250 km/h
when approaching vehicles ahead.
R Atspeeds up toappr oximately 120 km/h
when approaching crossing vehicles, pedes-
trians and cyclists.
R Atspeeds up toappr oximately 100 km/h
when approaching stationary vehicles.
R Atspeeds up toappr oximately 80 km/h when
approaching cyclists ahead.
R Atspeeds up toappr oximately 70 km/h when
approaching stationary pedestrians and
cyclists.
Situation-dependent br Situation-dependent br aking assist aking assistance
ance
If th eve hicle is tr avelling at speeds abo veappr ox-
imately 7 km/h, situation-dependent braking
assistance may inter vene in thefo llowing situa-
tions. Ve
hicles without Driving Assis tance Package:
R Atspeeds up toappr oximately 250 km/h
when approaching vehicles ahead.
R Atspeeds up toappr oximately 80 km/h when
approaching cyclists ahead, pedestrians walk-
ing in the direction of tr avel and stationary
ve hicles.
R Atspeeds up toappr oximately 70 km/h when
approaching crossing pedestrians and
cyclists.
R Atspeeds up toappr oximately 60 km/h when
approaching stationary pedestrians and
cyclists.
Ve hicles with Driving Assis tance Package:
R Atspeeds up toappr oximately 250 km/h
when approaching vehicles ahead.
R Atspeeds up toappr oximately 120 km/h
when approaching crossing vehicles, pedes-
trians and cyclists.
R Atspeeds up toappr oximately 100 km/h
when approaching stationary vehicles.
R Atspeeds up toappr oximately 80 km/h when
approaching cyclists ahead. Driving and parking
247
247
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R
Atspeeds up toappr oximately 70 km/h when
approaching stationary pedestrians and
cyclists.
Cancelling a br
Cancelling a br ak
ak e application of A e application of A ctiv
ctiv e Br
e Br ake
ake
Assist
Assist
Yo u can cancel a brake application of Active
Brake Assist at any time by:
R Fully depressing the accelerator pedal or with
kickdown.
R Releasing the brake pedal.
Ac tive Brake Assist may cancel the brake applica-
tion when one of thefo llowing conditions is ful/l-
led:
R You manoeuvre toavo idthe obstacle.
R There is no longer a risk of collision.
R An obs tacle is no longer de tected in front of
yo ur vehicle. R R
eaction t eaction t o oncoming r
o oncoming r oad user
oad users (onl
s (only v
y vehicles
ehicles
wit
wit h Dr
h Dr iving Assist
iving Assist ance P
ance Pack
ackag
age)
e)
Ac tive Brake Assist can also react todetected
oncoming road users:
R Reaction up tospeeds of appr oximately
100 km/h
R Warning for oncoming road users thro ugh
acoustic warning and warning lamp
R Autonomous braking application in order to
re duce the se verity of an accident
Ev
Ev asiv
asiv eSt
e St eer
eer ing Assist
ing Assist &
W
WARNING
ARNING Risk of accident despite Eva-
sive Steering Assist
Evasive Steering Assist cannot alw aysre cog-
nise objects or complex tra1c situations
clear ly.
Moreo ver,th e steering support pr ovided by
Evasive Steering Assist is not su1cient to
avo id a collision. #
Always pay careful attention tothe tra1c
situation; do not relyon Evasive Steering
Assist alone. #
Be prepared tobrake or swer veif neces-
sar y. #
End the support byactively steering in
non-critical situations. #
Drive at an appropriate speed if there
are pedestrians close tothe path of your
ve hicle. Evasive
Steering Assist has thefo llowing charac-
te ristics:
R Detection of pedestrians, cyclists and vehi-
cles.
R Assis tance thro ugh po wer-assis ted steering if
it de tects a swerving manoeuvre.
R Activation byan abrupt steering mo vement
during a swerving manoeuv re.
R Assistance during swerving and straigh tening
of theve hicle. 248 248
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R
Reaction from a speed of appr oximately
20 km/h up toa speed of appr oximately
110 km/h.
The steering support of Evasive Steering Assist
can be cancelled at any time bycounter steering.
Sy
Sy st
stem limits
em limits
Fu ll system per form ance is not yetavailable for a
short time aTer switching on theve hicle or aTer
driving o.. As long as the functions are restric ted,
th eÆ warning lamp can also be shown in the
driver's displa y.Depending on the environmental
conditions, it may take afew minutes before full
system per form ance is available.
The system may be impaired or may not function,
particular lyin thefo llowing situations:
R In sno w,rain, fog, heavy spr ay, if there is glare,
in direct sunlight or in greatly varying light
conditions.
R Ifth e sensors are dirty, misted up, damaged or
co vered. (/ page 217)
R Ifth e sensors are impaired due tointer fere nce
from other radar sources, e.g. strong radar
re 0ections in multi-s tore y car par ks. R
If a loss of tyre pressure or a defecti vetyre
has been de tected and displa yed.
R In complex tra1c situations where objects
cannot alw ays be clear lyidenti/ed.
R If pedestrians, cyclists or vehicles mo ve
qu ickly into the sensor de tection range.
R Ifro ad users are hidden by other objects or
are located close toother objects.
R Ifth e typical outline of a pedestrian or cyclist
cannot be distinguished from the backg round.
R If a pedestrian or cyclist is not de tected as
such, e.g. due tospecial clo thing or other
objects.
R Ifth e driver's seat belt is not fastened.
R On bends wi tha tight radius.
Se
Se tting A tting A ctiv
ctive Br
e Br ak
ake Assist
e Assist
R
R eq
equir uir ements:
ements:
R The vehicle is switched on. Multimedia system:
4 © 5
Settings 5
Assistance
5 Avoid contact #
Activate or deactivate the function.
% It is recommended that you alw ays lea ve
Ac tive Brake Assist acti vated.
When Active Brake Assist is deactivated, the dis-
ta nce warning function, the autonomous braking
function and Evasive Steering Assist are deactiva-
te d.
% IfAc tive Brake Assist is deactivated, theæ
symbol appears in the status bar of the driv-
er's displa y,and the system is reactivated the
next time theve hicle is star ted.
Se
Se tting t
tting t he time of t
he time of t he br
he brak
ake application w
e application w ar
arnings
nings #
Select ZnexttoActive Brake Assist . #
Select Early,Medium orLate. Driving and parking
249
249
Page 253 of 541

Speed Limit Assist
Speed Limit Assist
F
F
unction of Speed Limit Assist
unction of Speed Limit Assist
% Speed Limit Assist uses OpenStreetMap da ta,
which is made available under the conditions
of the Open Database License (OBbL). For
more information, see: https://
www.osmfoundation.org/wiki/licence.
Speed Limit Assist de tects speed limits with multi-
function camera and displa ys them in the driver's
display and optionally in the head-up displa y.The
camera also de tects speed limits with a restric-
tion indicated byan additional sign (e.g. when
we t).
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 217).
W W ar
ar ning when t
ning when t he maximum per
he maximum per missible speed is
missible speed is
ex
ex ceeded
ceeded
The system can warnyou if you unintentionally
ex ceed the maximum permissible speed. Todo
th is, you can specify in the multimedia system by
how much the maximum permissible speed can
be exceeded before a warning is issued. You can specify whe
ther thewa rning is tobe just a visual
wa rning or an acoustic one as well (/ page 251).
Displa
Displa y in t
y in the dr
he dr iv
iver's display
er's display 1
Perm issible speed
2 Perm issible speed when there is a restriction
3 Additional sign with restriction
% Tra1c signs which ha vean impact on the
maximum permissible speed, e.g. signs indi-
cating the beginning or end of dual car riage-
wa ys, can also be de tected.
The system can show up totwo tra1c signs in the
driver's display simultaneousl y.The system alw ays
prioritises displaying speed limits. Up toone traf- fi
c sign with a maximum permissible speed can be
shown in the head-up displa y.If two speed signs
are shown in the driver's displa y,fore xamp le when
speed limits are de tected, theva lue of leT-hand
speed limit 1is transmitted tothe limiter, cruise
control or Active Distance Assist DISTRONIC for
adoption and is shown in the head-up displa y.
If Speed Limit Assist cann otdeterm ine the cur-
re nt maximum permissible speed (e.g. due to
missing signs), thefo llowing display appears in
th e driver's displa y: This is displa
yed continuously if theve hicle is in a
country where Speed Limit Assist is not suppor-
te d. Speed Limit Assist is not available in all coun-
tries.
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 250 250
Driving and parking
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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
Page 255 of 541

are approaching pedestrian crossings or when
yo u are about todrive past stop signs or red lights
unintentionall y.
The camera also de tects and anal yses tra1c
signs with a restriction indicated byan additional
sign (e.g. when wet).
Tr a1c Sign Assist portr ays only selected signs in
th e driver's displa y.Ac tual tra1c signs and speed
limits ha vepriority over tra1c signs and speed
limits shown in the driver's displa y.
Also obser vethefo llowing information:
R select a speed adap tedto the tra1c, sur-
ro undings and weather conditions
R obser veactual tra1c signs
R obser veapplicable tra1c rules and regula-
tions
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 217). Display
Display s in t
s in the dr
he dr iv
iver's display
er's display 1
Perm issible speed
2 Perm issible speed when there is a restriction
3 Additional sign with restriction
The system can sh owuptotwo tra1c signs in the
driver's display simultaneousl y.The system alw ays
prioritises displaying speed limits. Up toone traf-
fi c sign with a maximum permissible speed can be
shown in the head-up displa y.If two speed signs
are shown in the driver's displa y,fore xamp le when
speed limits are de tected, theva lue of leT-hand
speed limit 1is transmitted tothe limiter, cruise
control or Active Distance Assist DISTRONIC for
adoption and is shown in the head-up displa y. Examples of tra1c signs which can be displa
yed
Tr a1c Sign Assist can de tect and display following
tra1c signs 1:
R speed limits
R end of the speed limit
R overtaking restrictions
R play streets
R depending on the countr y:signs showing the
start or end of mo torw ays and dual car riage-
wa ys 252
252
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Tr
a1c Sign Assist can de tect following additional
signs 3and, if necessar y,anal yseth ere leva nce
of there strictions using other vehicle senso rs:
R when wet
R slippe ryroad sur faces
R infog
R temp orary restrictions
R exits
R restrictions for car/trailer combinations
Tr a1c Sign Assist also uses data from the digital
street map in the navigation system. When you
lea veor enter a municipality or change roads, on
a mo torw ay ex it or slip road fore xamp le, or aTer
yo u turn at a junction, the display in the driver's
display can thus be updated without a tra1c sign
having been de tected.
Depending on vehicle equipment and countr y,the
system can also display speed restrictions ahead
in the driver's display and in the head-up displa y.
The driver's display can also sh owthe distance to
an upcoming lo wer limit speed. Forth is purpose,
information from the digital road map of the navi-
ga tion system is used. The Assistancemenu can also display a dynamic visualisation of
the speed
limits ahead.
If Tra1c Sign Assist cann otdeterm ine the cur-
re ntly applicable maximum permissible speed
(e.g. due tomissing signs), thefo llowing display
appears in the driver's displa y: Tr
a1c Sign Assist is not available in all countries.
If th eve hicle is in a country where Tra1c Sign
Assist is not suppor ted, this is displa yed continu-
ousl y.
% Also obser vethe information on display mes-
sages in Tra1c Sign Assist (/ page 424).
W
W ar ar ning when t
ning when t he maximum per
he maximum per missible speed is
missible speed is
ex
ex ceeded
ceeded
The system can warnyou if you unintentionally
ex ceed the maximum permissible speed. Todo
th is, you can specify in the multimedia system by
how much the maximum permissible speed can
be exceeded before a warning is issued. You can
set thewa rning tovisual only (the tra1c sign 0ashes
thre e times in the driver's display) or vis-
ual and acoustic, including a warning tone.
A
A dditional functions of
dditional functions of Tr
Tra1c
a1c Sign Assis
Sign Assis t (coun-
t (coun-
try
try -speci/c)
-speci/c)
W
W ar
ar ning f
ning f or no-entr
or no-entr y signs:
y signs:Tra1c Sign Assist can
wa rnyou if you drive the wrong way down a sec-
tion of road, fore xamp le on mo torw ay slip roads
or one-w aystreets.
W
W ar
ar ning at pedes
ning at pedestr trian cr
ian crossings: ossings: ifyo u approach
pedestrian crossings, pr ovided that pedestrians
are in the danger zone or are moving towa rds it,
Tr a1c Sign Assist can warnyou up toa speed of
appr oximately 70 km/h.
W
W ar
ar ning at st
ning at st op signs:
op signs: Tra1c Sign Assist can warn
yo u up toa speed of appr oximately 70 km/h if
yo u are about todrive past a stop sign uninten-
tionall y.Fo rth is to be possible, the signs must be
clear, fore xamp le ifthe system de tects more than
one stop sign, or a stop sign can be con/rmed
using the digital navigation map. No warning can
be issued if se veral di.erent signs are de tected.
W
W ar
ar ning at r
ning at r ed lights:
ed lights: Tra1c Sign Assist can warn
yo u up toa speed of appr oximately 70 km/h if Driving and parking
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253