
Blind Spot Assist monitors the areaupto10ft
(3.0 m)behind your vehicle and directly nex tto
your vehicle, as shown in the diagram. For this
purpose, Blind Spot Assist uses radar sensor sin
the rear bumper.
If the lanes are narrow, vehicles driving in the
lane beyond the lane nex ttoyour vehicle may be
indicated, especially if the vehicles are not driv-
ing in the middle of their lane. This may be the
case if ther eare vehicles driving at the inner
edge of their lanes.
Due to the natur eofthe system:
Rwarning smay be issued in error when driving
close to crash barriers or similar solid lane
borders.
Rthe warning is canceled when driving for an
extended period nex ttolong vehicles, such as
trucks.
Indicator and warning display
:Yellow indicator lamp/red warning lamp
Blind Spot Assist is not activ eatspeeds below
approximately 20 mph (30 km/h). Vehicles in
the monitoring range are then not indicated.
When Blind Spot Assist is activated, indicator
lamp :in the exterior mirrorsl ights up yellow
at speeds of up to 20 mph (3 0km/ h).Ats peeds
above 20 mph (30 km/h), the indicator lamp
goe soutand Blind Spot Assist is operational.
If av ehicl eisd etected within the blind spot
monitoring rang eatspeeds above 20 mph
(30 km/h), warning lamp :on the correspond-
ing sid elights up red .Thisw arning is always
emitted when avehicl eenter sthe blind spot
monitoring rang efrom behind or from the side.
Whe nyou overtake avehicle, the warning only
occurs if the difference in speed is less than
7m ph (12 km/h).
The yellow indicator lamp goe soutif reverse
gea rise ngaged .Inthis event, Blind Spot Assist
is no longer active. The brightness of the indicator/warning lamps
is adjuste
dautomaticall yaccording to the ambi-
ent light.
Collisio nwarning
Ifav ehicl eisd etected in the monitoring rang eof
Blind Spot Assist and yo uswitch on the corre-
sponding turn signal ,adoubl ewarning tone
sounds. Re dwarning lamp :flashes. If the turn
signal remains on, vehicles detected are indica-
ted by the flashing of red warning lamp :.
There are no further warning tones.
Switchin gonBlind SpotA ssist
XMake sure that Blind Spot Assist
(Ypage 171 )isa ctivate dinthe on-board
computer.
XTurn the SmartKey to position 2in the ignition
lock.
Warning lamps :in the exterio rmirrors light
up red for approximately 1.5 seconds and
then turn yellow.
Lan eKeeping Assist
General notes
Lane Keeping Assist monitors the are ainfront of
your vehicl ewithc amera :,which is mounted
at the top of the windshield .Lane Keeping Assist
detects lane markings on the roa dand warns
yo ub efore yo uleave your lane unintentionally.
If yo uselect km
on the on-board compute rinthe
Display Unit Speed-/Odometerfunction
(Ypage 172), Lane Keeping Assist is active
starting at aspeed of 60 km/h .Ifthemiles
display uni tiss elected ,the assistance range
begins at 40 mph.
Aw arning may be given if afront wheel passes
ove ralanem arking. It will warn yo ubymeans of
intermittent vibration in the steering wheel for
up to 1.5 seconds.
160Driving systems
Driving and parking

Important safety notes
GWARNING
LaneK eepin gA ssist may no talways clearly
recognize lane markings.
In this case, LaneK eepin gA ssist may:
Rgiveanu nnecessaryw arning
Rnotg iveaw arning
Thereisar iskofana cciden t.
Always pay particula rattentio ntothetraff ic
situation and stay inlane ,inp articula rif
warned byLaneK eepin gA ssist.
GWAR NING
The LaneK eepin gA ssist warning does not
return th evehicle to th eoriginal lane .Therei s
ar iskofana cciden t.
You should always steer,b rakeora ccelerate
yourself, inparticula rifwarned byLaneK eep-
ing Assist.
If you fail to adapt your driving style, LaneK eep-
ing Assist can neither reduce th eriskofana cci-
dentn oroverr idethel aws of physics .Lane
Keepin gAssist canno ttak ei ntoa ccountt he
road ,tra ffic and weather conditions. LaneK eep-
ing Assist ismerely an aid.You are responsible
for th edistanc etotheveh icle in front, for veh i-
cle speed, for braking ingood tim eand for stay-
ing inyour lane.
The LaneK eepin gAssist does no tkeept he veh i-
cle inthel ane.
The system may beimpaired or may no tfunction
if:
Rthere ispoor vis ibility, e.g .due to insuff icient
illumi nation of th eroad ,ord ue to snow, rain,
fog or spray
Rthere isglare, e.g .fro mo ncom ingt raffic, the
sun or reflections (e.g. when th eroad surface
is wet)
Rthew indshield is dirty, fogged up, damaged or
covered, for instance byasticker, inthev icin-
ity of th ecamera
Rthere are no ,several or unclear lane markings
for alane ,e.g.ina reas withroad construction
work
Rth el ane markings are worn away, dark or cov-
ere dup,e.g .byd irt orsnow
Rthed istanc etothevehicle infrontist oosmall
and th elane markings thus canno tbedetec-
ted
Rth el ane markings chang equickly, e.g. lanes
branch off ,cross onea nother or merge
Rther oad isnarrow and winding
Rthere are stron gshadows cas tontheroad
Switching on Lane Keeping Assist
XSwit ch on Activ eLaneK eepingA ssist using
th eo n-bo ard computer; to do so, select
Standard
or Adaptive(Ypage 171).
If you driv eatspeeds above4 0mph
(60 km/ h)and lane markings are detected,
th el ine sint heassistance graphicsd isplay
(
Ypage 171) are showning reen. LaneKeep-
ing Assist is ready for use.
Standard
If Standardis selected, no warning vibration
occurs if:
Ryou switch on th eturns ignals. In this event,
th ew arning sare suppressedf orac ertain
period of time.
Rad riving safety system intervenes, sucha s
ABS, BA SorESP®.
Adaptive
When Adaptiveis selected, no warning vibra-
tio no ccurs if:
Ryou switch on th eturns ignals. In this event,
th ew arning sare suppressedf orac ertain
period of time.
Rad riving safety system intervenes, e.g .ABS ,
BA SorE SP®.
Ryou accelerate hard,e .g.k ickdown.
Ryou brak ehard.
Ryou steer actively, e.g .swerve to avoid an
obstacle or chang elane squickly.
Ryou cut th ecorner on asharpb end.
In orde rtha ty ou are warned only when neces-
sary and in good tim eifyou cross th elane mark-
ing ,the system recognize scertain conditions
and warn syou accordingly.
The warning vibratio noccurs earlieri f:
Ryou approach th eouter lane markin gona
bend.
Rth er oad has ver ywide lanes, e.g .ahighway.
Rthes ystem recognize ssolid lane markings.
Driving systems161
Driving and parking
Z

You will see one of the followingdisplay mes-
sages in the multifunction display:
RPhoneR EADYor the name of the network
provider: the mobile phoneh as foundanet-
work and is ready to receive.
RPhoneNoS ervice:there is no network
available or the mobile phoneiss earching for
an etwork.
Accepting acall
If someone calls you when you are in the Telmenu,adisplay messagea ppears in the multi-
function display.
You can accept acall at any tim eregardless of
the menus elected.
XPress the6button on the steeringw heel
to accept an incomingc all.
Rejecting or endingacall
XPress the ~button on the steeringw heel
to reject or end acall.
Selecting an entr yinthephone book
XPress the =or; button on the steering
wheel to select the Telmenu.
XPress the9,:ora button to
switc htot he phoneb ook.
XAuthorizea ccess to the phoneb ook on the
phone.
XPress :or9 to select the names one
afte rthe other.
or
XTo start rapid scrolling: press and hold
the : or9 button for longe rthan one
second.
The names in the phoneb ook are displayed
quickly one afte rthe other.
Rapid scrolling stops when you release the
button or reach the end of the list.
XIf only one telephone number is stored for
an ame: press the 6ora button to
star tdialing.
or
XIf there is mor ethano ne number for a
particula rname: press the 6ora
button to display the numbers.
XPress the 9or: button to select the
numbe ryou want to dial.
XPress the 6ora button to star tdialing.
or
XTo exit th etelephone book: press the~
or % button.
Redialing
The on-board computer saves the last names or
numbers dialed in the redial memory.
XPress the =or; button on the steering
wheel to selectt heTelmenu.
XPress the 6button to switc htothe redial
memory.
XPress the 9or: button to selectt he
desired name or number.
XPress the 6ora button to star tdialing.
or
XTo exit th eredial memory: press the~
or % button.
Assistance menu
Introduction
Depending on your vehicle's equipment, in the
DriveAssistmenu, you have the following
options:
RDisplayin gthe assistanc egraphic
(Ypage 171)
RActivatin gordeactivatin gActiveB rak eAssist
(Ypage 171)
RActivating/deactivatin gATTENTIONA SSIST
(Ypage 171)
RActivating/deactivatin gBlindS pot Assist
(Ypage 171)
RActivating/deactivatin gLane KeepingA ssist
(Ypage 171)
170Menus and submenus
On-board computer and displays

Displaying theassistance graphic
XPress th e= or; buttononthesteerin g
whee ltos elec tthe DriveAssistmenu.
XPress 9or: to selec tAssist .Graphic.
XPressato confirm your selection .
The multifunction display shows th eDistance
Pilo tDISTR ONIC distanc edisplay in th eassis-
tanc egraphic.
The assistanc egraphi cshows you th estatu s
of and/o rinformati on from other drivin gsys-
tems or drivin gsafet ysystems :
RDistanc ePilotD ISTR ONIC (Ypage 140)
RActive Brak eAssist(Ypage 56)
RATTENTION ASSIST (Ypage 158)
RLaneKeepin gAssist(Ypage 160)
Activating/deactivating Active Brak e
Assist
You can use this function to activat eordeacti-
vat eA ctiv eBrake Assist.
XPress th e= or; buttononthesteerin g
whee ltos elec tthe DriveAssist.menu.
XPress th e9 or: buttontos elect
Brake Assist.
XPress ato confirm .
The curren tselection appears .
XTo activate/deactivate :press th ea but-
to na gain .
If Active Brak eAssistisd eactivated, th eæ
symbol appears in th eassistanc egraphi cdis-
play of th emultifunction display.
Further information on Active Brak eAssist
(
Ypage 56).
Setting ATTENTIO NASSIS T
XPress th e= or; buttononthesteerin g
whee ltos elec tthe DriveAssistmenu.
XPress th e9 or: buttontos elect
Attention Assist.
XPress ato confirm your selection .
The curren tselection appears .
XTo activate/deactivate :press th ea but-
to na gain .
Whe nATTEN TION ASSIST is deactivated, th e
é symbol appears in th emultifunction dis -
play in th eassistanc egraphics display.
Fo rfurther information about ATTENTION
ASSIST ,see (
Ypage 158).
Activating/deactivating Blind Spot
Assis t
XPress th e= or; buttononthesteerin g
whee ltos elec tthe DriveAssistmenu.
XPress th e9 or: buttontos elect
Blind Spo tAssist.
XPress ato confirm your selection .
The curren tselection appears .
XTo activate/deactivate :press th ea but-
to na gain .
Further information on Blin dSpotA ssist
(
Ypage 159).
Activating/deactivating Lan eKeeping
Assis t
XPress th e= or; buttononthesteerin g
whee ltos elec tthe DriveAssistmenu.
XPress th e9 or: buttontos elect
Lan eK eepin gAssist.
XPress ato confirm your selection .
The curren tselection appears .
XPressaagain.
XPress :or9 to set Off,Standardor
Adaptive.
XPress th ea buttontos avet he setting .
Whe nLaneK eepin gAssistisa ctivated, th e
multifunction display shows th elan em ark-
ings as bright lines in th eassistanc egraphic.
Further information on Lan eKeepin gAssist
(
Ypage 160).
Menus an dsubmenus171
On-board computera nd displays
Z

Display messagesPossible causes/consequences andMSolutions
LaneKeepin gAssistCurrently Unavaila‐ble See Operator' sManual
LaneKeepin gAssistisd eactivated and temporarily inoperative.
Possibl ecauses are:
Rthew indshield in th ecamera' sfield of vision is dirty
Rvisibilit yisimpaire ddue to heav yrain ,sno worf og
Rthere hav ebeen no lan emarking sfor an extended period
Rthel an em arking sare worn, dark or covered, e.g. by dir torsnow
Whe nthe causes state dabov enol onger apply, th edisplay message
disappears.
Lan eKeepin gAssistiso perational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions.
XSecur ethe vehicl eagainst rollin gaway (Ypage 131).
XClean th ewindshield.
Lan eKeepin gAssistInoperativeLaneKeepin gAssistisf aulty.
XVisit aqualified specialist workshop .
Blind SpotAssistCurrently Unavaila‐ble See Operator' sManual
Blind Spot Assististemporarily inoperative.
Possibl ecauses are:
Rfunction is impaire ddue to heav yrain or snow
Rther adar sensor system is outside th eoperating temperature range
Rther adar sensor system is temporarily inoperative, e.g. due to elec -
tromagneti cradiation emitted by nearby TV or radi ostation sor
other source sofelectromagneti cradiation
The yellow 9indicator lamp salso ligh tupint heexterio rmirrors.
Whe nthe causes state dabov enol onger apply, th edisplay message
disappears.
Blind Spot Assis tisoperational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions.
XSecur ethe vehicl eagainst rollin gaway (Ypage 131).
XClean th esensor s(Ypage 240).
XRestart th eengine.
Blind Spo tAssistInoperativeBlind Spot Assis tisfaulty.
The yellow 9indicator lamp salso ligh tupint heexterio rmirrors.
XVisit aqualified specialist workshop .
ParkingGuidanceInoperativeParking Guidance is malfunctioning (Ypage 152).
XRestart theengine.
If th emultifunction display still shows th edisplay message :
XVisitaqualified specialist workshop .
Display messages193
On-boardc omputer andd isplays
Z