The intensity of warning lamps:depends on
the brightness of the ambient light and is con-
trolled automatically.
Collision warning
If av ehicle is detected in the monitoring range of
Blind Spot Assist and you switch on the corre-
sponding turn signal, adouble warning tone
sounds once. The warning lamp in the corre-
sponding exterior mirror flashes. If the turn sig-
nal remains on, detected vehicles are indicated
by the flashing of the warning lamp in the exte-
rior mirror. There are no further warning tones.
Activating Blind Spot Assist
XMake sure that Blind Spot Assist is activated
in the on-board computer (Ypage 184).
XTurn the key to position 2in the ignition lock.
The warning lamps in the exterior mirrors light
up for approximately 1.5 seconds.
Status indicators in the status overview submenu
If Blind Spot Assist is activated, the display
shows symbol :in the StatusOverviewsub-
menu of the on-board computer (Ypage 183). If
you are driving faster than 20 mph (30 km/h) ,
the symbo lalsos hows rada rwaves between the
two vehicles ;.Blind Spo tAssist is thenr eady
for use.
Towin gatrailer
If youattach atrailer, make sure thaty ouhave
correctl yestablishe dthe electrical connection.
Thi scan be accomplishe dbychecking the trailer
lighting. Blind Spo tAssist is thend eactivated
and the Blind Spo tAssist Currently
Unavail. See Operator' sManualmessage
appear sinthe display.
Lane Keeping Assist
General notes
Lane Keeping Assist monitors the area in front of
your vehicl ebymeans of camera :which is
mounted at the top of the windshield. Lane
Keeping Assist detects lane markings on the
roa dand can warn yo ubefor ey ou leav eyour
lane unintentionally.
This functio nisa vailable in the range between
40 mph (60 km/h )and 125 mph (20 0km/h).
Aw arning maybeg iven if afront whee lpasses
ove ralanem arking. It will warn yo ubymeans of
intermittent vibratio nthroug hthe steering
whee lfor up to 1.5 second s.
Importan tsafety notes
GWARNING
Lane Keeping Assist may not always clearly
recognize lane markings.
In this case, Lane Keeping Assist may:
Rgive an unnecessary warning
Rnot give awarning
There is ariskofana ccident.
Alway spayparticula rattention to the traffic
situation and stay in lane, in particula rif
warned by Lane Keeping Assist.
GWARNING
The Lane Keeping Assist warning doe snot
return the vehicl etothe original lane. There is
ar iskofana ccident.
Yo us houl dalway ssteer, brake or accelerate
yourself, in particula rifwarned by Lane Keep-
ing Assist.
Driving systems147
Driving and parking
Z
If you fail to adapt yourdriving style, Lane Keep-
ing Assist can neither reduce the risk of accident
nor override the law sofphysics. Lane Keeping
Assist cannot take into account road, weather or
traffic conditions. Lane Keeping Assist is only an aid .You are responsible for the distance to the
vehicle in front, for vehicle speed,b raking in
good time and for staying in you rlane.
Lane Keeping Assist does not keep you rvehicle
in its lane.
The system may be impaired or may not function
if:
Rthere is poor visibility, e.g. due to insufficient
illuminatio nofthe road, or due to snow, rain,
fog or spray
Rthere is glare ,e.g. from oncoming traffic, the
sun or reflection from other vehicles( e.g. if
the road surface is wet)
Rthe windshield is dirty, fogged up, damaged or
covered, for instance by asticker, in the vicin-
ity of the camera
Rno, or several ,unclea rlane markings are pres-
ent for one lane, e.g. in aconstruction area
Rthe lane markings are worn away, dark or cov-
ered up, e.g. by dirt or snow
Rthe distance to the vehicle in front is too small
and the lane markings thus cannot be detec-
ted
Rthe lane markings change quickly, e.g. lanes
branch off, cross one another or merge
Rthe road is narrow and winding
Rthere are highlyv ariable shade conditions on
the road
Deactivating and activating Lane Keep-
ing Assist
XPress the Çbutton.
If the indicator lamp in the button lights up
and the display shows the Çsymbo linthe status area
,Lane Keeping Assist is switched
on but not ready for use.
If you drive at speedsa bove 40 mph
(60 km/h) and lane markings are detected,
the display shows the highlighted Çsym-
bol in the status area when Lane Keeping
Assist is activated. Lane Keeping Assist is
then ready for use.
Status indicators in the status overview submenu
The display in the Status Overviewsubmenu
of the on-board computer also shows the status
of Lane Keeping Assist (
Ypage 183). If Lane
Keeping Assist is activated but not ready for use,
the display shows the boundary lines in the sym-
bol as dashed :.IfLane Keeping Assist is ready
for use, the boundary lines in the symbo lare
shown as solid lines ;.
Setting the sensitivity of Lane Keeping
Assist
XIn theAssist.menu on the on-board com-
puter, select the Lane Keeping Assist:
function (Ypage 184).
XSelectStandardorAdaptive.
In the setting Standard
,now arning vibration
occurs if:
Ryou operate the turn signal in the correspond-
ing direction. In this event, the warnings are
suppressed for acertain period of time.
Rad riving safety system, such as ABS, BAS or
ESP®,i ntervenes or performs acontrol
action.
When Adaptive
is selected, there is also no
warning vibratio nwhen:
Ryou accelerate hard, e.g. kickdown.
Rbrake sharply
Ryou steer actively ,e.g. swerve to avoid an
obstacle or change lanes quickly.
Ryou cut the corner on asharp bend.
In order that you are warned only when neces-
sary and in good time if you cross the lane mark-
148Driving systems
Driving and parking
ing, the system recognizes certain conditions
and warns you accordingly.
The warningvibration occurs earlier if:
Ryou approacht he outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. afreeway.
Rthe system recognizes solid lane markings.
The warnin gvibration occurs later if:
Rthe road has narrow lanes.
Ryou cut the corner on abend.
Alertness Assistant ATTENTION
ASSIST
General notes
ATTENTIONA SSISTh elps you duringl ong,
monotonous journeys such as on freeways and
interstate highways. It is active in the 40 mph
(60 km/h) to 125 mph (200 km/h )range. If
ATTENTIONA SSISTd etect stypical indicator sof
fatigue or increasingl apses in concentration on
the part of the driver, it suggestst akingabreak.
Important safetyn otes
ATTENTIONASSISTiso nly an aid. The system
may not always detect fatigue or lapses in con-
centration until too late, or may not detect them
at all. ATTENTIONA SSISTisn otas ubstitut efor
aw ell-rested and attentive driver.
The functionality of ATTENTIONA SSISTi s
restricted, and warnings may be delayed or not
occur at all:
Rif the lengt hofthe journey is less than approx-
imately 30 minutes
Rif the road condition is poor, e.g. if the surface is uneven or if there are potholes
Rif there is astrong side wind
Rif you have adopte dasportyd rivings tyle with
high cornering speeds or high rate sofaccel-
eration
Rif you are predominantly drivingatas peed
below 40 mph (6 0km/ h)or above 125 mph
(200 km/h)
Rif the tim ehas been set incorrectly
Rin active drivings ituations,such as when you
change lanes or change your speed ATTENTIONA
SSISTisr eset and starts assessing
your attention again when you continue your
journey if:
Ryou switc hoff the engine
Ryou tak eoff your seat belt and open the driv-
er's door, e.g. for achange of drivers or to
tak eab reak
Displaying th eattention level
For vehicles with steeringw heel buttons you can
have the current ATTENTIONA SSIST( Attention
Level) assessmentd isplayed.
XSelectStatus Overviewin theAssist.menua nd display the attention level
(Ypage 183).
The followingi nformation is displayed:
Rthe lengthofthe journey sinc ethe last break
Rthe attention level determined by ATTENTION
ASSIST, displayed in abar display in five levels
froml ow to high
Rif ATTENTIONA SSISTisu nable to calculate
the attention level and cannot output awarn-
ing, the System
Passivemessage appears in
the display. The bar display is the ndimmed.
This is the case, for example, if you are pre-
dominantly drivingatas peed below 40 mph
(60 km/h) or above 125 mph (200 km/h).
Activating ATTENTION ASSIST
XActivatin gATTENTIONA SSISTw ith the on-
board computer:
Ron vehicles without steeringw heel buttons
(Ypage 174)
Ron vehicles with steeringw heel buttons
(Ypage 184)
For vehicles with steeringw heel buttons,the
system determines the attention level of the
driverd epending on the settin gselected:
Driving systems149
Driving and parking
Z
or
XShift the automatic transmission toP.
In vehicles with Active Parking Assist,t he rear
view camera remains switched on after the ini-
tial shift to reverse gear for the whole duration of
active parking assistance. You can find informa-
tion on active parking assistance under "Active
Parking Assist“(
Ypage 154).
Displays in the audio display
:Yellow guide line at adistance of approx-
imately 13 ft (4.0 m) from the rear of the
vehicle
;White guide line without turnin gthe steering
wheel, vehicle width including the exterior
mirrors (static)
=Yellow guide line for the vehicle width
including the exterior mirrors, for current
steering wheel angle (dynamic)
?Yellow lane of tires at current steering wheel
angle (dynamic)
AYellow guide line at adistance of approx-
imately 3ft(1.0 m) from the rear of the vehi-
cle
BRed guide line at adistance of approximately
12 in (0.30 m) from the rear of the vehicle
CBumper
DVehicle center axis (locating aid) The guide lines are shown when the transmis-
sion is in position
R.
The distance specification sonly apply to
object sthat are at ground level.
PARKTRONIC warning displaysf or vehicles with
Active Parking Assist
E
Frontw arning displays
FVehicle symbol as PARKTRONIC measure-
ment operational readiness indicator
GRear warning displays
When PARKTRONIC is switched on and is opera- tional (
Ypage 152) in vehicles with Active Park-
ing Assist,t he camera image shows vehicle
symbol F.When the PARKTRONIC warning dis-
plays go on, warning displays Eand Glight up
accordingly as red or yellow bracket saround
vehicle symbol F.
"Reverse parking" function
Backing up straight into aparking space
without turning the steering wheel
:White guide line without turnin gthe steering
wheel, vehicle width including the exterior
mirrors (static)
;Yellow guide line for the vehicle width
including the exterior mirrors, for current
steering wheel angle (dynamic)
160Driving systems
Driving and parking
In status areaD,the display can show the sta-
tus of the following driving systems:
À ATTENTION ASSIST(
Ypage 149)
à Lane Keeping Assist (
Ypage 147)
V Cruise control (
Ypage 140)
è Rearwindow wiper (
Ypage 102)
è ECO start/stop function (
Ypage 122)
Menu overview
You can think of the order of the menus as a
circle. Use the =or; steering wheel
buttons to show the menu bar and scroll through
the menus. Use the :or9 steering
wheel buttons to scroll through their submenus and functions.
Operatio ninformation can be found under
"Operating the on-board computer"
(
Ypage 175).
Depending on the vehicle equipment, you can
call up the following menus:
RTripmenu (Ypage 177)
RNavimenu (navigation instructions)
(Ypage 179)
RAudiomenu (Ypage 180)
RTel(telephone) menu (Ypage 181)
RAssist.(assistance) menu (Ypage 182)
RServicemenu (Ypage 184)
RSettingsmenu (Ypage 185)
Trip menu
Standard display
Odometer
XPress and hold the %steering wheel but-
ton until the Tripmenu with trip odometer :
and odometer ;appears.
If the display shows the speed in the header, the
outsid etemperature is additionall ydisplaye don
the lowere dge of display panel =.
You can switch the permanent display in the
header (
Ypage 185).
Displaying the range and current fuel
consumption
Using the steering wheel buttons
XPress =or; to select the Tripmenu.
XPress:or9 to select Range and Con-
sumption.
The approximate range that can be covered is
calculated according to you rcurrent driving
style and the amount of fuel in the tank. If there
is only asmall amount of fuel left in the fuel tank,
the display shows avehicle being refueled Ï
instead of the approximate range.
The fuel consumption display is base donthe
current driving style.
On-board computer (vehicles with steeringw heel buttons)177
On-board computer and displays
Z
Acceptingacall
XPress th e6 buttontoa nswer acall.
If someon ecallsy ou when you are in th eTel
menu, acorre sponding display message
appear sinthemultifunction display.
Rejects orendsac all
XPress the~ steering whee lbutton.
Dialing anumber fr omthep hone book
Using th esteering whee lbuttons
XPress =or; to select th eTelmenu.
XPress :, 9ora to switch to th e
phone book .
XPress:or9 to select names succes-
sively.
If you press and hold th ebutto nfor longer
than 1second, th enames in th etelephon e
book are shown rapidly on eafter another.
or
XPress and hold :or9 for longer than
5s econds.
Rapid scrollin g—thenam etha tstartsw itht he
next lette rortheprevious lette rinthealpha-
bet is displayed. Rapid scrollin gstops when
you release th ebutto norr eachthe endoft he
list .
XIf only one telephone number is store dfor
an ame: press 6ora to start dialing.
or
XIf there is mor ethano ne number for a
particular name: press the6 ora
butto ntod isplay th enumbers.
XPress :or9 to select atelephon e
number .
XPress6ora to start dialing. or
XTo exit th
etelephone book :press ~or
%.
Redialing
The on-board computer saves th elast names or
number sdialed in th eredial memory. Using th e
steering whee lbuttons
XPress =or; to select th eTelmenu.
XPress th e6 buttontos witch to th eredial
memory.
XPress :or9 to select names or tele-
phone numbers.
XPress th e6 ora buttontostart dialing.
or
XTo exit th eredial memory :press th e~
or % button.
Assistance menu
Introd uction
Dependin gonthevehicle’s equipment, you hav e
th ef ollowin goption sintheAssist .menu:
RDisplaying th estatus overview
(Ypage 183)
RDeactivating or activating ES P®
(Ypage 183)
RActivating or deactivating theCOLLISION
PREVENTION ASSIST distanc ewarning func-
tion (
Ypage 184)
RSetting th eATTEN TION ASSIST sensitivit y
(Ypage 184)
RActivating or deactivating Blind Spot Assis t
(Ypage 184)
RSetting th esensitivit yofLaneK eepin gAssist
(Ypage 184)
182On-boar dcomputer (vehicles with steering wheel buttons)
On-boar dcomputer and displays
Status overview
:Blind Spot Assist switched on and activated
(Ypage 184)
;Rear window wiper switched on
(Ypage 102)
=ATTENTION ASSIST activated
(Ypage 184)
?COLLISION PREVENTION ASSIST distance
warning function activated (Ypage 184)
ALane Keeping Assist activated and ready for
use (Ypage 184)
XPress=or; to select the Assist.menu.
XPress9or: to select Status Over‐view.
XPress the abutton.
The Status Overviewonly shows the sym-
bols of the driving systems or driving safety
systems that are activated. The Blind Spot
Assist and Lane Keeping Assist symbols may
vary depending of the system status:
RIf Blind Spot Assist symbol :does not
show any radar waves between the two
vehicles, Blind Spot Assist is switched on
but not ready for use.
Further information can be found under
"Blind Spot Assist" (
Ypage 145).
RIf Lane Keeping Assist symbol Ashows
dashed lane boundary lines, Lane Keeping
Assist is switched on but not ready for use.
Further information can be found under
"Lane Keeping Assist" (
Ypage 147).
You can also have the ATTENTION ASSIST
assessment or the attention level displayed in the Status Overview
.
XTo display the attention level: press:
and 9 to switch between the status over-
view and the ATTENTION ASSIST assessment.
The ATTENTION ASSIST assessment shows
the length of the journey since the last break
as well as the attention level detected
(
Ypage 149).
Deactivating/activating ESP®
This menu is only available on vehicles without
the å button on the center console.
Please observe the important safety notes
under "ESP
®(Electronic Stability Program)"
(Ypage 64).
GWARNING
If you deactivate ESP
®,E SP®no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP
®in the situations descri-
bed in the following.
It may be best to deactivate ESP
®in the follow-
ing situations:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
Further information can be found under "ESP®
(Electronic Stability Program)" (Ypage 64).
XStart the engine.
Using the steering wheel buttons
XPress =or; to select the Assist.menu.
XPress:or9 to select ESP.
On-board computer (vehicles with steering wheel buttons)183
On-board computer and displays
Z
XPressato confirm.
The currents tatus is shown.
XTo activate/deactivate: pressaagain.
If the å warning lamp in the instrument
cluster lights up when the vehicle is ready to
drive, ESP
®is deactivated.
If the ÷ warning lamp lights up continuously,
ESP
®is not availabled ue toamalfunction.
Observe the information on warning lamps
(
Ypage 221) and display messages
(Ypage 207).
Activating/deactivating the distance
warning function
Using the steerin gwheel buttons
XPress =or; to select the Assist.menu.
XPress9or: to select DistanceWarning.
XPressato confirm.
The currents tatus is shown.
XTo activate/deactivate: press theabut-
ton again.
If the distanc ewarning function of COLLISION
PREVENTION ASSIST is activated, the display
shows the Äsymbol in the header.
At speeds up to approx 20 mph (30 km/h),
the display in vehicles with Active Parking
Assist first shows the ístatus indicator.
Only from aspeed of about 20 mph (30 km/ h)
does the display show the Äsymbol
instead of the ístatus indicator.
Further information can be found under "COL-
LISION PREVENTION ASSIST" (
Ypage 143).
Setting ATTENTION ASSIST
Using the steering wheel buttons
XPress =or; to select the Assist.menu.
XPress:or9 to select AttentionAssist.
XPressato confirm.
The currents etting is displayed.
XTo change the setting: pressaagain.
XPress :or9 to set Deactivated,
Standardor Sensitive.
XPress ato confirm the choice.
If ATTENTION ASSISTisa ctivated, theÀ
symbol is shown in the status area of the dis- play. The selection
Standard
orSensitivesets the sensitivity with which the system
determines the attention level.
Further information can be found under "ATTEN-
TION ASSIST" (
Ypage 149).
Activating/deactivating Blind Spot
Assist
Using the steering wheel buttons
XPress =or; to select the Assist.menu.
XPress:or9 to select Blind SpotAssist.
XPressato confirm.
The currents tatus is shown.
XTo activate/deactivate: press theabut-
ton again.
Further information can be found under "Blind
Spot Assist "(
Ypage 145).
Setting Lane Keeping Assist
Using the steering wheel buttons
XPress=or; to select the Assist.menu.
XPress:or9 to select LaneKeepingAssist.
XPressato confirm.
The currents electionStandardorAdaptiveis displayed.
XTo change the setting: pressaagain.
Further information can be found under "Lane
Keeping Assist "(
Ypage 147).
Service menu
184On-boardcomputer (vehicles with steering wheel buttons)
On-boardcomputer and displays