
System limitations
The de tection capability of Blind Spot Assist can
be restricted in thefo llowing situations:
RThere is dirt on the sensors or the sensors
are obscured.
RWhen there is poor visibility, e.g. due tofog,
heavy rain, snow or spr ay.
RIf nar rowvehicles are within the monitoring
ra nge, e.g. bicycles.
Wa rnings may be issued in er ror when driving
close tocrash barr iers or similar solid lane bor‐
ders. Warnings may be inter rupte d when driving
alongside long vehicles, forex ample truc ks,fo r a
prolonged time.
Blind Spot Assist is not operational when reve rse
ge ar is engaged.
Fu nction of braking applications (Active
Blind Spot Assist)
If Ac tive Blind Spot Assi stdetects a risk of a side
impact in the monitoring range, a cours e-cor‐
re cting brake application is car ried out. This is
designed tohelp youav oid a collision. The course-cor
recting brake application is availa‐
ble in the speed range between appr oximately
20 mph (30 km/h) and 125mp h (200 km/h).
&
WARNING Risk of accident despite
brake application of Active Blind Spot
Assi st
A cours e-correcting brake application cannot
alw ays pr event a collision.
#Alw aysst eer, brake or accelera teyour‐
self, especially if Active Blind Spot
Assi stwa rnsyo u or makes a course-
co rrecting brake application.
#Alw ays maintain a safe dis tance at the
sides.
& WARNING Risk of accident despite
Ac tive Blind Spot Assi st
Ac tive Blind Spot Assi stdoes not react tothe
fo llowing:
ROver taking vehicles closely on the side,
placing them in the blind spot area.
RVe hicles approaching and overtaking you
at a very differe nt speed.
As a result, Active Blind Spot Assi stmay nei‐
th er give warnings nor inter vene in such sit‐
uations.
#Alw ays pay careful attention tothe traf‐
fi c situation and maintain a safe dis‐
ta nce at the side of theve hicle.
Ac tive Blind Spot Assi stis only an aid. It may fail
to detect some vehicles and is not a substitute
fo r attentive driving. Alw ays ensure that there is
suf ficient dist ancetothe side forot her road
users and obs tacles.
Driving and park ing239

If a course-correcting brake application occurs ,
th ere dwa rning lamp flashes in the outside mir‐
ro r and a warning tone sounds. In addition, a dis‐
pl ay 1 indicating the danger of a side collision
appears in the multifunction displa y.
In rare cases, the sy stem may make an inappro‐
priate brake application. This brake application
may be inter rupte d at any time if yousteer
slightly in the opposite direction or accelera te.
Sy stem limitations
Either a course-cor recting brake application
appropria teto the driving situation, or none at
all, may occur in thefo llowing situations:
RVe hicles or obs tacles, e.g. crash barr iers, are
located on bo thsides of your vehicle.
RAve hicle approaches too closely on the side.
RYo u ha veadop ted a sporty driving style with
high cornering speeds.
RYo ubr ake or accelerate signif icantly.
RA driving safe ty system inter venes, such as
ESP®or Active Brake Assi st.
RESP®is deacti vated.
RA loss of tire pressure or a defective tire is
de tected.
Ac tivating or deactivating Blind Spot Assi st
or Active Blind Spot Assi st
Multimedia sy stem:
, 9 H K L F O H.k $ V V L V W D Q F H. % O L Q G
6 S R W $ V V L V W
#Ac tivate Oor deacti vate ª the function.
Ac tive Lane Keeping Assist
Function of Active Lane Keeping Assist
Active Lane Keeping Assist monitors the area in
front of your vehicle bymeans of multifunction
camera 1.
240
Driving and pa rking

You are warned byvibration pulses in thesteer‐
ing wheel in thefo llowing circums tances:
RAc tive Lane Keeping Assist de tects lane
markings.
RA front wheel passes over the lane markings.
Whe ther a warning is issued and when this
occurs also depends on the selected sensitivity
setting (s tanda rdor adaptive).
If yo ufa ilto adapt your drivin gst yle, Ac tive Lane
Ke eping Assist can neither reduce therisk of an
accident nor override the la wsof ph ysics. It can‐
not take into account road, weather or traf fic
conditions. Active Lane Keeping Assist is only an
aid. You are responsible forth e dis tance tothe
ve hicle in front, forve hicle speed, for braking in
good time and forst ay ing in lane.
Ve hicles with Lane Tracking pac kage:If th e
lane markings are solid lines and youdo not
re act tothewa rning, a lane-cor recting brake
application can bring theve hicle back into the
original lane.
Ve hicles with Driving Assistance pac kage or
Driving Assistance Plus pa ckage: Ifyo udo not re
act tothewa rning, a lane-cor recting brake
application can bring theve hicle back into the
original lane. In the case of a broken lane mark‐
ing being de tected, a brake application will only
be made if a vehicle has been de tected in
the
adjacent lane. Oncoming vehicles, overtaking
ve hicles and vehicles in adjacent lanes can be
de tected.
The brake application is available in the speed
ra nge between 40 mph (60 km/h) and 120mp h
(200 km/h).
If a lane-cor recting brake application occurs , dis‐
play 1appears in the multifunction displa y.Sy
stem limitations
No lane-cor recting brake application occurs in
th efo llowing situations:
RYo u clear lyand actively steer, brake or accel‐
erate.
RYo u ha veswitched on the turn signal indica‐
to r.
RA driving safe ty system inter venes, such as
ESP®, Ac tive Brake Assi stor Active Blind
Spot Assi st.
RYo u ha veadop ted a sporty driving style with
high cornering speeds or high rates of accel‐
eration.
RESP®is deactivated.
RIf a loss of tire pressure or a defective tire
has been de tected and displ ayed.
The sy stem may be impaired or may not function
in thefo llowing situations:
RThere is poor visibility, e.g. duetoinsuf ficient
illumination of thero ad, highly variable shade
conditions, or due torain, sno w,fog or heavy
spr ay.
Driving and pa rking 24
1

RThere isglare, e.g. from oncoming traf fic, the
sun or reflections.
RThere is dirt on the windshield in the vicinity
of the multifunction camera or the camera is
fo gged up, damaged or obscured.
RNo or se veral, unclear lane markings are
present for one lane, e.g. in a construction
area.
RThe lane markings are worn, dark or co vered.
RThe dis tance totheve hicle in front is too
small and the lane markings thus cannot be
de tected.
RThe lane markings change quickl y,e.g. lanes
branch off, cross one ano ther or mer ge.
RThe road is very nar row and winding.
Ve hicles with Driving Assistance pac kage or
Driving Assistance Plus pa ckage: Active Lane
Ke eping Assist uses radar sensors tomonitor
se veral areas around theve hicle. If thera dar
sensors in there ar bumper are dirty or co vered
with snow ,th e sy stem may be impaired or may
not function. If an obs tacle in the lane in which yo
u are driving has been detected, no lane-cor‐
re cting brake application occurs .
Ac tivating Active Lane Keeping Assist
&
WARNING Risk of accident despite
Ac tive Lane Keeping Assist warning
A lane-cor recting brake application cannot
al wa ys bring theve hicle back into the origi‐
nal lane.
#Alw aysst eer, brake or accelera teyour‐
self, especially if Active Lane Keeping
Assist warnsyo u or makes a lane-cor‐
re cting brake application.
&
WARNING Risk of accident despite inter‐
ve ntion of Active Lane Keeping Assist
Ac tive Lane Keeping Assist does not de tect
traf fic conditions or road users. In very rare
cases, the sy stem may make an inappropri‐
ate brake application, e.g. af ter intentional ly
driving over a solid lane marking.
The brake application can be inter rupte d at
any time if yousteer slightly in the opposite
direction.
#Alw ays make sure that there is suf fi‐
cient dist ancetothe side forot her traf‐
fi c or obs tacles.
&
WARNING Risk of accident despite Lane
Ke eping Assist
Lane Keeping Assist cannot always clearly
de tect lane markings.
In such cases, Lane Keeping Assist can:
Rgive an unnecessary warning
Rnot give a warning
#Alw ays pay particular attention tothe
traf fic situation and keep within the
lane, especially if Active Lane Keeping
Assist alerts you.
Re quirement:
The driving speed is at least 40 mph (60 km/h).
242
Driving and pa rking

#Press button2.
If indicator lamp 1lights up, Lane Keeping
Assist is activated. When lane markings are
de tected, the lines in the assis tance graphic
are shown in white.
Sensitivity of Active Lane Keeping Assist
Wi th th est andard or adaptive setting, you can
influence when thewa rning vibration of Lane
Ke eping Assist take s place. In bo
th thest andard and adaptive settings, no
wa rning vibration occurs in thefo llowing situa‐
tions:
RYo u ha veswitched on the turn signal indica‐
to r.
RA driving safe ty system inter venes, such as
ABS, BAS or ESP®.
In the adaptive setting, there will also be no
wa rning vibration in thefo llowing situations:
RThe vehicle is accelerated or braked consid‐
erably.
RYo usteer actively, e.g. swer vetoavo id an
obs tacle or change lane quickl y.
RYou cut the corner on a sharp bend.
Setting the sensitivity of Active Lane Keep‐
ing Assist
Multimedia sy stem:
, 9 H K L F O H.k $ V V L V W D Q F H. $ F W
/ D Q H . H H S $ V V L V W
#Select a setting.
Driving and parking 24
3

Operating safety
&
WARNING Risk of dist raction from infor‐
mation sy stems and communications
equipment
If yo u operate information and communica‐
tion equipment integ rated in theve hicle
when driving, youwill be dis tracted from the
traf fic situation. This could also cause youto
lose control of theve hicle.
#Only operate this equipment when the
traf fic situation permits.
#If yo u cannot besure of this, stop the
ve hicle whilst paying attention toroad
and traf fic conditions and ope rate the
equipment with theve hicle stationar y.
&
WARNING Risk of dist raction from oper‐
ating mobile communication equipment
while theve hicle is in motion
If yo u operate communication equipment
integrated intheve hicle when driving, you
will be distracted from the tra ffic situation.
This could also cause youto lose control of
th eve hicle.
Only operate this equipment when theve hi‐
cle is stationar y.
Foryo ur ow n safe ty, always obser vethefo llow‐
ing points when operating mobile communica‐
tions equipment and especially your voice con‐
trol sy stem:
RObser vethe legal requ irements forth e coun‐
try in which you are driving.
RWhile driving, only oper ate mobile communi‐
cations equipment and your voice control
sy stem when the tra ffic conditions permit it.
Yo u may otherwise be distracted from the
traf fic conditions and cause an accident,
injuri ngyourself and others.
RDo not use thevo ice control sy stem in an
emer gency as your voice can change and
yo ur telephone call can be unnecessarily
dela yed.
RFa miliarize yourself with thevo ice control
sy stem functions before starting the journe y.
Operation
Multifunction steering wheel operation over‐
view
The Voice Cont rol Sy stem is operational appr ox‐
imately thirty seconds af terth e ignition is
switched on.
256 Voice Cont rol Sy stem