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is no longer active.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
The warning vibration occurs later if:
Rthe road has narrow lanes.
Ryou cut the corner onabend.
162Driving systems
Driving and parking
Important safety notes
GWARNING
If you operate information systems and com-
munication equipmen tintegrate dinthevehi-
cle while driving ,you will be distracte dfrom
traffic conditions. You could also lose control
of th evehicle. Ther eisariskofana ccident.
Only operate th eequipmen twhen th etraffic
situation permits. If you are no tsuret hatthis
is possible ,park th evehicl epayin gattention
to traffic condition sand operate th eequip-
men twhen th evehicl eiss tationary.
You must observ ethe legal requirements for th e
country in whic hyou are currentl ydriving when
operating th eon-bo ard computer.
GWARNIN G
If th einstrumen tcluste rhas faile dormal-
functioned, you may no trecognize function
restriction sinsystems relevan ttosafety. The
operating safet yofyour vehicl emay be
impaired .Ther eisar iskofana ccident.
Drive on carefully. Hav ethe vehicl echecked
at aq ualified specialist workshop immedi-
ately.
The on-board computer only shows message sor
warning sfromc ertai nsystems in th emultifunc-
tion display. You should therefor emakes ure
your vehicl eisoperating safely at all times .
If th eoperating safet yofyour vehicl eis
impaired ,pull ove rassoonasitiss afetodos o.
Contac taqualified specialist workshop.
Fo rano verview, see th einstrumen tpanel illus-
tration (
Ypage 31).
Display sand operation
Instrumen tcluster lighting
The lighting in th einstrumen tcluster, in th edis-
plays and th econtrols in thevehicl einterior can
be adjusted usin gthe brightness control knob.
The brightness control knob is locate donthe
botto mleftoft heinstrumen tcluste r
(
Ypage 31).
XTurn th ebrightness control knob clockwise or
counter-clockwise.
If you tur nthe ligh tswitch (
Ypage 93 )tot he
Ã, TorL position ,the brightness
will depend upon th ebrightness of th eambi -
en tlight.
The ligh tsensor in th einstrumen tcluste r
automatically control sthe brightness of th e
multifunction display. In daylight, th edisplays
in th einstrumen tcluste rare no tilluminated.
Speedometer with segments
The segments in th espeedometer indicat e
whic hspee drange is available.
RCruis econtro lactivated (Ypage 138):
The segments ligh tupfromt hestore dspee d
to th emaximum speed.
RDistanc ePilot DISTRONI Cisactivated
(Ypage 140):
On eort wo segments in th eset spee drange
ligh tup.
RDistanc ePilot DISTRONI Cdetects avehicl ein
fron tmoving mor eslowly than th estored
speed:
The segments between th espee doft hevehi-
cle in fron tand th estoreds pee dligh tup.
Tachometer
!
Do no tdriveint heoverrevving range, as this
could damag ethe engine.
The red ban dinthetachometer indicates th e
engine's overrevving range.
The fuel suppl yisinterrupted to protect th e
engin ewhen th ered ban disreached.
Outsidet emperatur edisplay
You should pay special attention to road condi-
tion swhen temperatures are aroun dfreezing
point.
Bea rinm indt hatthe outside temperature dis-
play indicates th etem perature measured and
does no trecord th eroad temperature.
The outside temperature display is in th emulti-
function display (
Ypage 165).
Ac hang eint heoutside temperature is shown in
th em ultifunction display after adelay.
Display sand operation163
On-boardc omputer and displays
Z
Coolanttemperatur egauge
GWARNING
Opening th ehood when th eengineiso ver-
heated or when there is afireint heengine
compartmen tcoul de xpose you to hot gases
or other servic eproducts. Thereisar isko f
injury.
Let an overheate denginec ooldown before
opening th ehood.Ift here is afireint he
enginec ompartment, keep th ehood closed
and contac tthe fired epartment.
!Ad isplay message is shown if th ecoolant
temperatur eistoohigh.
If th ecoolant temperatur eisover2 48 ‡
(12 0† ), do no tcontinue driving .The engine
will otherwise be damaged.
The coolant temperatur egage is in th einstru-
men tcluste ront heright-hands ide (
Ypage 31).
The Hmarkin ginthecoolant temperatur egauge
corresponds to acoolant temperatur eof
approximately 24 8‡(120† ).
Under normal operatin gconditionsa nd at the
correc tcoolant level, th ecoolant temperature
gauge may ris etotheHmarking.
Operatin gthe on-boar dcomputer
Overview
:Multifunction display
;Right control panel
=Leftc ontrol panel
XTo activate th eon-boar dcomputer: turn
th eS ma rtKey to position 1in th eignition lock.
You can control th emultifunction display and
th es ettings in th eon-board computer usingt he
buttons on th emultifunction steering wheel.
Left control panel
=
;RCalls up th emenua nd men ubar
9
:Press briefly:
RScroll sinlists
RSelect sasubmenuorf unction
RIn theAudiomenu: select sthe
previous or next station, when the
preset list or statio nlist is active,
or an audio track or vide oscene
RIn the Tel(telephone )menu:
switches to th ephoneb ook and
selects anam eort elephone num-
ber
164Displays and operation
On-boardc omputer and displays
XTo selectapreset list or station list: press
and briefl yholdt he 9 or: button until
the preset list or statio nlistint he desired
frequency rang eisshown.
XTo select astation: brieflypress 9
or :.
SIRIUS XM satellite radio functions like anormal
radio.
For more informatio nonradio operation, see
"Satellite radio "int he separate operating
instructions.
Operatin ganaudiop layer or audio
media
Audio data from various audi odevice sorm edia
can be played ,depen ding on the equipment
installe dinthe vehicle.
XSwitch on the multimedia system and select
audioCDorM P3 mode(seet he separate
operating instructions).
XPress the =or; button on the steering
whee ltoselect the Audiomenu.
XTo select the next/previous track: briefly
press the 9or: button.
XTo select atrack from the track list (rapid
scrolling): press and hol dthe 9 or:
button unti ldesir ed track :appears.
If yo upress and hol dthe 9 or: button,
the rapid scrolling speed is increased .Not all
audi odrives or data carriers support thisf unc-
tion.
If trac kinformatio niss tored on the audio
device or medium, the multifunctio ndisplay
will sho wthe numbe rand titl eofthe track.
VideoDVD operation
XSwitch on the multimedia system and select
video DVD (se ethe separate operating
instructions).
XPress the =or; button on the steering
whee ltoselect the Audiomenu.
XTo select the next or previous scene:
brieflypress the 9or: button.
XTo select ascene from the scen elist
(rapi dscrolling): press and hol dthe 9
or : button unti ldesir ed scene :
appears.
Telephone menu
Introduction
GWARNING
If yo uoperate informatio nsystem sand com-
municatio nequipment integrated in the vehi-
cle whil edriving ,you will be distracted from
traffic conditions. Yo ucould also lose control
of the vehicle. There is ariskofana ccident.
Onlyo perate the equipment when the traffic
situatio npermits. If yo uare not sure thatt his
is possible, park the vehicl epayin gattention
to traffic conditions and operate the equip-
ment when the vehicl eisstationary.
Whe ntelephoning, yo umusto bserve the legal
requirements for the country in which yo uare
currentl ydriving.
XSwitch on the mobil ephone (se ethe manu-
facturer’so perating instructions).
XSwitch on the multimedia system
(Ypage 212).
XEstablis haBluetooth®connectio ntothe mul-
timedi asystem (Ypage 214).
XPress the =or; button on the steering
whee ltoselect the Telmenu.
Menus and submenus169
On-board computer and displays
Z
Service menu
Depending on the equipment installed in the
vehicle, you have the following options in the
Serv.
menu:
RCalling up display messages (Ypage 178)
RRestarting the tire pressure loss warning sys-
tem (Ypage 262)
RChecking the tire pressure electronically
(Ypage 262)
RCalling up the service due date
(Ypage 235)
Settings menu
Introduction
Depending on the equipment installed in the
vehicle, in the Sett.menu you have the follow-
ing options:
RChanging the instrumentc luster settings
(Ypage 172)
RChanging the light settings (Ypage 172)
RChanging the vehicle settings (Ypage 173)
RChanging the convenience settings
(Ypage 174)
RRestoring the factory settings (Ypage 175)
Instrument cluster
Selecting the distance unit
The Display Unit Speed-/Odometer:func-
tion allowsy ou to choose whether certain dis-
playsa ppear in kilometers or miles in the mul-
tifunction display.
XPress the =or; button on the steering
wheel to select the Sett.menu.
XPress the:or9 button to select the
Instrument Clustersubmenu.
XPress ato confirm.
XPress the :or9 button to select the
Display Unit Speed-/Odometerfunction.
The current setting kmormilesappears.
XPress the abutton to save the setting.
The selected unit of measurement for distance
appliest o:
Rthe digital speedometer in the Tripmenu
Rthe odometer and trip odometer
Rthe trip computer
Rthe current consumption and the range
Rnavigation instructions in theNavimenu
Rcruise control
RDistancePilot DISTRONIC
RASSYST PLUS service interval display
Selecting permanent display
The Permanent Display:function allowsy ou
to choose whether the multifunction display
always shows the outside temperature or the
speed.
The speed display is inverse to the speedome-
ter.
XPress the =or; button on the steering
wheel to select the Sett.menu.
XPress the:or9 button to select the
Instrument Clustersubmenu.
XPress ato confirm.
XPress the :or9 button to select the
Permanent Display:function.
The current setting, Outside Temperature
orSpeedometer [km/h]orSpeedometer[mph],appears.
XTo change the setting: pressaagain.
Lights
Setting the daytime running lights
This function is not available in Canada.
XPress the =or; button on the steering
wheel to select the Sett.menu.
XPress the:or9 button to select the
Lightsubmenu.
XPress ato confirm.
XPress the :or9 button to select the
Daytime Running Lightsfunction.
If the DaytimeRunningLightsfunction has
been switched on, the cone of light and the
W symbol in the multifunction display are
shown in orange.
XPress the abutton to save the setting.
Further information on daytime running lamps
(
Ypage 93).
Setting the brightness of the ambient
lighting
XPress the =or; button on the steering
wheel to select the Sett.menu.
XPress the:or9 button to select the
Lightsubmenu.
172Menus and submenus
On-board computer and displays
XPress the=or; button on the steering
wheel to select the Sett.menu.
XPress the:or9 button to select the
Vehiclesubmenu.
XPress ato confirm.
XPress the :or9 button to select the
Automatic Door Lockfunction.
When the Automatic Door Lockfunction is
activated, the multifunction display shows the
left-hand vehicle door in orange.
XPress the abutton to save the setting.
For further information on the automatic locking
feature, see (
Ypage 69).
Activating/deactivating the acoustic
locking verification signal
If you switch on the AcousticLockfunction, an
acoustic signal sounds when you lock the vehi-
cle.
XPress the =or; button on the steering
wheel to select the Sett.menu.
XPress the:or9 button to select the
Vehiclesubmenu.
XPress ato confirm.
XPress the :or9 button to select the
Acoustic Lockfunction.
If the Acoustic Lockfunction is activated,
the & symbol in the multifunction display
lights up orange.
XPress the abutton to save the setting.
Convenience
Activating/deactivating the EASY-
ENTRY/EXITf eature
GWARNING
When the EASY-ENTRY/EXIT feature adjusts
the steerin gwheel, you and other vehicle
occupants–p articularly children –could
become trapped. There is arisk of injury.
While the EASY-ENTRY/EXIT feature is mak-
ing adjustments, make sure that no one has
any body parts in the sweep of the steering
wheel.
If somebody becomes trapped:
Rpress one of the memory function position
buttons, or
Rmove the switch for steerin gwheel adjust-
ment in the opposite direction to that in
which the steerin gwheel is moving.
The adjustmen tprocess is stopped.
XPress the =or; button on the steering
wheel to select the Sett.menu.
XPress the:or9 button to select the
Conveniencesubmenu.
XPress ato confirm.
XUsing :or9,s elect the EasyEntry/Exitfunction.
If the EasyEntry/Exitfunction is activated,
the multifunction display shows the steering
wheel in orange.
XPress the abutton to save the setting.
Further information on the EASY-ENTRY/EXIT
feature (
Ypage 87).
Switching the belt adjustment on/off
XPress the =or; button on the steering
wheel to select the Sett.menu.
XPress the:or9 button to select the
Conveniencesubmenu.
XPress ato confirm.
XPress the :or9 button to select the
Belt Adjustmentfunction.
When the Belt Adjustmentfunction is acti-
vated, the seat belt is displayed in orange in
the multifunction display.
XPress the abutton to save the setting.
For further information on belt adjustment, see
(
Ypage 41).
Switching the fold-in mirrors when lock-
ing feature on/off
This function is only availablew hen the vehicle is
equipped with the electrical fold-in function.
This function is only availableinC anada.
When you activat ethe Auto.
MirrorFoldingfunction, the exterior mirrors are folded in when
the vehicle is locked.
If you have switched on the Auto. Mirror
Foldingfunction and you fold in the exterior
mirrors using the button on the door
(
Ypage 89), they will not fold out automatically.
174Menus and submenus
On-board computer and displays