Vehicles in the monitoring range are then not
indicated.
Active Blind Spot Assist may not detect narrow
vehicles, such as motorcycles or bicycles, or
may only detect them too late.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may be
indicated, especially if the vehicles are not driv-
ing in the middle of their lane. This may be the
case if there are vehicles at the inner edge of
your lane.
Due to the nature of the system:
Rwarnings may be issued in error when driving
close to crash barriers or similar solid lane
borders.
Rwarnings may be interrupted when driving
alongside particularly long vehicles, e.g.
trucks, for a prolonged time.
Warning lamp
Active Blind Spot Assist is not operational at
speeds below approximately 20 mph (30 km/h).
Vehicles in the monitoring range are then not
indicated.
If a vehicle is detected within the blind spot
monitoring range at speeds above 20 mph
(30 km/h), warning lamp0043on the correspond-
ing side lights up red. This warning is always
emitted when a vehicle enters the blind spot
monitoring range from behind or from the side.
When you overtake a vehicle, the warning only
occurs if the difference in speed is less than
7 mph (12 km/h).
If you select the reverse gear, Active Blind Spot
Assist is not operational.
The brightness of the warning lamps is auto-
matically adapted to the brightness of the sur-
roundings.
When Active Blind Spot Assist is activated, gray
radar waves propagating backwards appear
next to the vehicle in the assistance display in
the multifunction display. Above a speed of
20 mph (30 km/h), the color of the radar waves
in the assistance display changes to green 0044.
Active Blind Spot Assist is then ready for use.
Visual and acoustic collision warning
If you switch on the turn signals to change lanes and a vehicle is detected in the side monitoring
range, you receive a visual and acoustic collision warning. You will then hear a double warning
tone and red warning lamp flashes. If the turn
signal remains on, detected vehicles are indica-
ted by the flashing of red warning lamp . There
are no further warning tones.
Course-correcting brake application
If Active Blind Spot Assist detects a risk of a lat-
eral collision in the monitoring range, a course-
correcting brake application is carried out. This
is meant to assist you in avoiding a collision.
GWARNING
A course-correcting brake application cannot always prevent a collision. There is a risk of an
accident.
Always steer, brake or accelerate yourself,
especially if Active Blind Spot Assist warns
you or makes a course-correcting brake appli-
cation. Always maintain a safe distance at the
sides.
If a course-correcting brake application occurs,
the red warning lamp flashes in the exterior mir-
ror and a dual warning tone sounds. In addition,
a display underlining the danger of a side colli-
sion appears in the multifunction display.
In very rare cases, the system may make an
inappropriate brake application. A course-cor-
recting brake application may be interrupted at
any time by countersteering slightly or acceler-
ating.
182Driving systems
Driving and parking
The course-correcting brake application is avail-
able in the speed range between 20 mph
(30 km/h) and 120 mph (200 km/h).
Either no braking application, or a course-cor-
recting brake application adapted to the drivingsituation occurs if:
Rthere are vehicles or obstacles, e.g. crash
barriers, located on both sides of your vehicle.
Ra vehicle approaches you too closely at the
side.
Ryou have adopted a sporty driving style with
high cornering speeds.
Ryou clearly brake or accelerate.
Ra driving safety system intervenes, e.g. ESP®
or PRE-SAFE®Brake.
RESP®is switched off.
Ra loss of tire pressure or a defective tire is
detected.
Switching on Active Blind Spot Assist
XMake sure that Active Blind Spot Assist is
activated in the on-board computer
(
Ypage 199)
XSwitch on the ignition.
Warning lamps in the exterior mirrors light up
red for approximately 1.5 seconds. Gray radarwaves propagating backwards appear next to
the vehicle in the assistance display on the
multifunction display.
Active Lane Keeping Assist
General notes
Active Lane Keeping Assist monitors the area in
front of your vehicle by means of multifunction
camera 0043at the top of the windshield. Various
different areas to the front, rear and side of your
vehicle are also monitored with the aid of the
radar sensor system. Active Lane Keeping Assist detects lane markings on the road and
can warn you before you leave your lane unin-
tentionally. If you do not react to the warning, a
lane-correcting application of the brakes can
bring the vehicle back into the original lane.
This function is available in a speed range
between 40 mph and 120 mph (60 km/h and
200 km/h)
.
Important safety notes
Ifyou fail to adapt your driving style, Active Lane
Keeping Assist can neither reduce the risk of an accident nor override the laws of physics. Active
Lane Keeping Assist cannot take account of
road and weather conditions. It may not recog-
nize traff icsituations. Active Lane Keeping
Assist isonly an aid. You are responsible for the
distance to the vehicle infront, for vehicle
speed, for braking ingood time and for staying in
your lane.
Active Lane Keeping Assist cannot continuously
keep your vehicle inits lane.
GWARNING
Active Lane Keeping Assist cannot always
clearly detect lane markings.
In such cases, Active Lane Keeping Assist
can:
Rgive an unnecessary warning and then
make a course-correcting brake application
to the vehicle
Rnot give a warning or intervene
There isa risk of an accident.
Always pay particular attention to the traffic
situation and keep within the lane, especially
if Active Lane Keeping Assist alerts you. Ter-
minate the intervention ina non-critical driv-
ing situation.
The system may be impaired or may not function
if:
Rthere is poor visibility, e.g. due to insufficient
illumination of the 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 isdirty, fogged up, damaged or
covered, for instance bya sticker, in the vicin-
ity of the camera
Driving systems183
Driving and parking
Z
Rthe radar sensors in the front or rear bumpers
or the radiator trim are dirty, e.g. obscured by
snow
Rthere are no, several or unclear lane markings
for a lane, e.g. in areas with road construction
work
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 strong shadows cast on the road
If no vehicle is detected in the adjacent lane and
broken lane markings are detected, no lane-cor-
recting brake application is made.
Warning vibration in the steering wheel
A warning may be given if a front wheel passes
over a lane marking. It will warn you by means of
intermittent vibration in the steering wheel for
up to 1.5 second s.
In orde r that you are warned only when neces-
sary and in good time if you cross the lane mark-
ing, the system recognizes certain conditions
and warns you accordingly.
The warning vibration occurs earlier if:
Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a highway.
Rthe system recognizes solid lane markings.
The warning vibration occurs later if:
Rthe road has narrow lanes.
Ryou cut the corner on a bend.
Lane-correcting brake application
If you leave your lane, under certain circumstan-
ces the vehicle will brake briefly on one side.
This is meant to assist you in bringing the vehicle
back to the original lane.
GWARNING
A lane-correcting brake application cannot
always bring the vehicle back into the original lane. There is a risk of an accident.
Always steer, brake or accelerate yourself,
especially if Active Lane Keeping Assist warns
you or makes a lane-correcting brake appli-
cation.
GWARNING
Active Lane Keeping Assist does not detect
traffic conditions or road users. In very rare
cases, the system may make an inappropriate brake application, e.g. after intentionally driv-
ing over a solid lane marking. There is a risk of
an accident.
An inappropriate brake application may be
interrupted at any time if you steer slightly in
the opposite direction. Always make sure that
there is sufficient distance on the side for
other traffic or obstacles.
If a lane-correcting brake application occurs,
display 0043appears in the multifunction display.
The brake application also slightly reduces vehi-
cle speed.
A lane-correcting brake application can be made
after driving over a lane marking recognize as
being solid or broken. Before this, a warning
must be given by means of intermittent vibration
in the steering wheel. In addition, a lane with
lane markings on both sides must be detected.
In the case of a broken lane marking being
detected, a lane-correcting brake application
can only be made if a vehicle has been detected
in the adjacent lane. The following vehicles can
have an influence on brake application: oncom-
ing traffic, vehicles that are overtaking and vehi-
cles that are driving parallel to your vehicle.
A further lane-correcting brake application can
only occur after your vehicle has returned to the original lane.
184Driving systems
Driving and parking
No lane-correcting brake application occurs if:
Ryou clearly and actively steer, brake or accel-erate.
Ryou cut the corner on a sharp bend.
Ryou have switched on the turn signal.
Ra driving safety system intervenes, e.g. ESP®,
PRE-SAFE®Brake or Active Blind Spot Assist.
Ryou have adopted a sporty driving style with
high cornering speeds or high rates of accel-
eration.
RESP®is switched off.
Rthe transmission is not in position D.
Ra loss of tire pressure or a defective tire has
been detected and displayed.
Ran obstacle in the lane in which you are driving
has been detected.
Active Lane Keeping Assist may not detect other
road users or traffic situations. An inappropriate
brake application may be interrupted at any time
if you:
Rsteer slightly in the opposite direction.
Rswitch on the turn signal.
Rclearly brake or accelerate.
A lane-correcting brake application is interrup-
ted automatically if:
Ra driving safety system intervenes, e.g. ESP®,
PRE-SAFE®Brake or Active Blind Spot Assist.
Rlane markings can no longer be recognized.
Activating/deactivating Active Lane
Keeping Assist
XPress button 0044.
Indicator lamp 0043lights up. The Lane Keep‐
ingAssistOnmessage appears in the mul-
tifunction display. If all conditions have been
satisfied, a warning or steering intervention
may be made. If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lines in the assistance graphic
(
Ypage 197) appear in green. Active Lane
Keeping Assist is ready for use.
XTo deactivate: press button0044.
Indicator lamp 0043goes out. The Active Lane
Keeping Assist is deactivated. The Lane
Keeping Assist Offmessage appears in
the multifunction display.
Selecting Standard or Adaptive setting
XIn the DriveAssistmenu on the on-board
computer, select the Active Lane Keep‐
ing Assistfunction (Ypage 199).
XSelect settingStandardorAdaptive.
When Standardis selected, no warning vibra-
tion occurs in the following situations:
Ryou switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
Ra driving safety system intervenes, such as
ABS, BAS or ESP®.
When Adaptive
is selected, no warning vibra-
tion occurs in the following situations:
Ryou switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
Ra driving safety system intervenes, e.g.
ABS, BAS or ESP®.
Ryou accelerate hard, e.g. kickdown.
Ryou brake hard.
Ryou steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly.
Ryou cut the corner on a sharp bend.
In order that you are warned only when neces-
sary and in good time if you cross the lane mark-
ing, the system recognizes certain conditions
and warns you accordingly.
The warning vibration occurs earlier if:
Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a highway.
Rthe system recognizes solid lane markings.
The warning vibration occurs later if:
Rthe road has narrow lanes.
Ryou cut the corner on a bend.
Driving systems185
Driving and parking
Z
Important safety notes
GWARNING
If you operate information systems and com-
munication equipmen tintegrate din th evehi-
cle while driving ,you will be distracte dfrom
traffic conditions. You could also lose control
of th evehicle. Ther eis aris kof an accident.
Only operate th eequipmen twhen th etraffic
situation permits. If you are no tsur ethat this
is possible ,park th evehicl epayin gattention
to traffic condition sand operate th eequip-
men twhen th evehicl eis stationary.
You must observ eth elegal requirements for th e
country in whic hyou are currentl ydriving when
operating th eon-board computer.
GWARNIN G
If th einstrumen tcluste rhas faile dor mal-
functioned, you may no trecognize function
restriction sin systems relevan tto safety. The
operating safet yof your vehicl emay be
impaired .Ther eis aris kof an accident.
Drive on carefully. Hav eth evehicl echecke d
at aqualified specialist workshop immedi-
ately.
If th eoperating safet yof your vehicl eis
impaired ,pull ove ras soo nas it is saf eto do so.
Contac t aqualified specialist workshop.
The on-board computer only shows message sor
warning sfrom certain systems in th emultifunc-
tion display. You should therefor emak esur e
your vehicl eis operating safely at all times .
Fo ran overview, see th einstrumen tpanel illus-
tration (
Ypage 34).
Displays and operation
Instrument cluster lighting
The ligh tsensor in th einstrumen tcluste rauto -
matically control sth ebrightness of th emulti-
function display. In daylight, th edisplays in th e
instrumen tcluste rare illuminated. Adimming
function is no tpossible in daylight.
The lighting in th einstrumen tcluster, in th edis-
plays and th econtrol sin th evehicl einterior can
be adjusted usin gth ebrightness control knob. The brightness control is locate
dbetween th e
instrumen tcluste rand th emultimedia system
display (
Ypage 35).
XTurn thebrightness control knob clockwise or
counter-clockwise.
If you tur nth eligh tswitch (
Ypage 104) to th e
0060, 0058or0058 position ,th ebrightness
will depend upon th ebrightness of th eambi -
en tlight.
Speedometer segments
The segments in th espeedometer indicat e
whic hspee drange is available.
RCruis econtrol activated (Ypage 145):
The segments ligh tup from th estore dspee d
to th een dof th escale.
RDISTRONI CPLU Sactivated (Ypage 147):
On eor two segments in th eset spee drange
ligh tup.
RDISTRONI CPLU Sdetects avehicl ein fron t
moving mor eslowly than th estore dspeed:
The segments between th espee dof th evehi-
cle in fron tand th estore dspee dligh tup.
Tachometer
!
Do no tdriv ein th eoverrevving range, as this
could damag eth eengine.
The red ban din th etachometer indicates th e
engine's overrevving range.
The fuel suppl yis interrupted to protect th e
engin ewhen th ered ban dis reached.
Outside temperature display
You should pay special attention to road condi-
tion swhen temperatures are aroun dfreezing
point.
Bea rin min dthat th eoutside temperature dis-
play indicates th etemperature measured and
does no trecord th eroad temperature.
The outside temperature display is in th emulti-
function display (
Ypage 188).
Ther eis ashort delay before achang ein outside
temperature is shown in th emultifunction dis-
play.
186Displays and operation
On-board computer and displays
Right control panel
0076RRejects or ends a call
RExits the telephone book/redial
memory
0061RMakes or accepts a call
RSwitches to the redial memory
0081
0082RAdjusts the volume
0063RMute
00E3RSwitches on the Voice Control Sys-
tem (see the separate operating
instructions)
Multifunction display
0043Top status bar
0044Display
0087Bottom status bar
Display panel 0044shows the selected menu or
submenu and display messages.
XTo open the menu list: press the00E2but-
ton on the steering wheel.
The menu list appears in display panel 0044.
Possible top status bar displays:
R--‡ Outside temperature (Ypage 186)
R003E Turn signal, left (Ypage 105)
R0058Low-beam headlamps (Ypage 105)
R0057High-beam headlamps (Ypage 105)
R0060Parking lamps and license plate lamps
(Ypage 105)
R003D Turn signal, right (Ypage 105)
Possible bottom status bar displays:
R00D6 ECO start/stop function (Ypage 124)
R00D9HOLD function (Ypage 154)
R005DActive Parking Assist (Ypage 163)
R00CE Adaptive Highbeam Assist Plus
(Ypage 106)
R004F DISTRONIC PLUS Steering Assist and
Stop&Go Pilot (Ypage 153)
R--- km/hAdditional speedometer
(Ypage 201)
Head-up display
General notes
The Head-up Display projects information from
the navigation system and the driver assistance
system above the dashboard into the driver's
field of vision. The Head-up Display allows the
driver to see all of the information without hav-
ing to take their eyes off the road.
A requirement for the display of the contents is that the following functions are available in the
vehicle and are switched on:
RCruise control
RDISTRONIC PLUS
RTraffic Sign Assist
RNavigation
Important safety notes
The Head-up Display is only an aid and is not a
substitute for attentive driving.
Speed limits and overtaking restrictions are not
always correctly displayed. Traffic signs always
have priority over the Traffic Sign Assist display.
The visibility of the Head-up Display is influ-
enced by the following conditions:
Rthe driver's seat position
Rthe positioning of the display image
Rthe general ambient light
Rsunglasses with polarization filters
Rwet roads
Rblocking of sunlight by objects on the display
cover
In the event of extreme sunlight, sections of the
display may fade. This can be reversed by
switching the Head-up Display off and on again.
iVehicles with the head-up display are equip-
ped with a special windshield. Should repairs
be necessary, have the windshield replaced at
a qualified specialist workshop.
188Displays and operation
On-board computer and displays
XPress0064or0063 on the steering wheel to
select the Navimenu.
XConfirm by pressing 0076on the steering
wheel.
Route guidance not active
0043Direction of travel
0044Current road
Route guidance active
No change of direction announced
0043Distance to the next destination
0044Estimated arrival time
0087Distance to the next change of direction
0085Current road
Change of direction announced with a
lane recommendation
0043Target of the change of direction
0044Distance to the change of direction
0087Change-of-direction symbol
0085Lane not recommended (dark gray)
0083Possible lane (light gray)
0084Recommended lane and new lane during a
change of direction (white)
On multilane roads, new lane recommendations
can be displayed for the next change of direction
if the digital map supports this data. During the
change of direction, new lanes may be added.
Lane not recommended 0085: you will not be able
to complete the next change of direction if you
stay in this lane.
Possible lane 0083: you will only be able to com-
plete the next change of direction in this lane.
Recommended lane 0084: in this lane you will be
able to complete the next change of direction
and the one after that.
192Menus and submenus
On-board computer and displays
XUse0064 or0063 to select the DriveAssistsubmenu.
XPress0076to confirm your selection.
XPress the 0064or0063 button to select ESP.
XPress0076to confirm.
The current selection appears.
XTo activate/deactivate: press the0076but-
ton again.
ESP
®is deactivated if the 00BBwarning lamp in
the instrument cluster lights up continuously
when the engine is running.
If the 00E5 warning lamp lights up continuously,
ESP
®is not available due to a malfunction.
Observe the information on warning lamps
(
Ypage 234).
Observe the information on display messages
(
Ypage 204).
Automatic activation of Night View Assist
Plus
XPress 00E2on the steering wheel to open the
menu list.
XPress 0064or0063 on the steering wheel to
select the Settingsmenu.
XConfirm by pressing 0076on the steering
wheel.
XUse 0064 or0063 to select the DriveAssistsubmenu.
XPress0076to confirm your selection.
XPress the 0064or0063 button to select
Night View Assist.
XPress 0076to confirm.
The current selection appears.
XTo activate/deactivate: press the0076but-
ton again.
If Night View Assist Plus automatic activation is switched on, the night vision image is automat-
ically shown in the multifunction display if an
object is detected (
Ypage 179).
For further information about Night View Assist
Plus (
Ypage 177).
Activating/deactivating Traffic Sign
Assist
Under certain conditions, the Traffic SignAssistfunction allows you to choose if traffic
signs and messages should be displayed in the
lower part of the speedometer.
XPress the 00E2button on the steering wheel
to open the menu list.
XPress 0064or0063 on the steering wheel to
select the Settingsmenu.
XConfirm by pressing 0076on the steering
wheel.
XUse 0064 or0063 to select the DriveAssistsubmenu.
XPress0076to confirm your selection.
XPress the 0064or0063 button to select
Traffic Sign Assist.
XPress 0076to confirm.
The current selection appears.
XTo activate/deactivate: press the0076but-
ton again.
Traffic signs and messages appear in the
lower part of the speedometer if the function
is activated.
For further information about Traffic Sign Assist,
see (
Ypage 176).
Activating/deactivating COLLISION PRE-
VENTION ASSIST PLUS
XPress the 00E2button on the steering wheel
to open the menu list.
XPress 0064or0063 on the steering wheel to
select the Settingsmenu.
XConfirm by pressing 0076on the steering
wheel.
XUse 0064 or0063 to select the DriveAssistsubmenu.
XPress0076to confirm your selection.
XPress the 0063or0064 button to select Col‐lision Prevention.
XPress0076to confirm.
The current selection appears.
XTo activate/deactivate: press0076again.
When COLLISION PREVENTION ASSIST PLUS is
deactivated, the 00D4symbol appears in the
multifunction display in the Assistance
Graphicmenu.
For further information about COLLISION PRE-
VENTION ASSIST PLUS, see (
Ypage 64).
198Menus and submenus
On-board computer and displays