MERCEDES-BENZ C-CLASS CABRIOLET 2018 Owner's Manual

Active Lane Keeping Assist
Generalnotes
Active Lan eKeepin gAssis tmonitors th earea in
fron tof your vehicl eby mean sof multifunction
camera :at th eto pof th ewindshield. Various
differen tareas to th efront, rear and side of your
vehicl eare also monitore dwit hth eaid of th e
radar sensor system. Active Lan eKeepin g
Assis tdetects lan emarking son th eroad and
can warn you before you leav eyour lan eunin-
tentionally. If you do no treac tto th ewarning , a
lane-correcting application of th ebrakes can
bring th evehicl ebac kint oth eoriginal lane.
This function is available in th erange between
40 mph and 12 0mph (60 km/h and 20 0km/h).
Important safety notes
If you fail to adapt your drivin gstyle, Active Lan e
Keepin gAssis tcan neither reduce th eris kof an
acciden tno roverride th elaws of physics .Active
Lan eKeepin gAssis tcanno ttak eaccoun tof
road and weather conditions. It may no trecog-
niz etraffic situations. Active Lan eKeepin g
Assis tis only an aid. You are responsibl efor th e
distanc eto th evehicl ein front, for vehicl e
speed, for braking in goo dtime and for stayin gin
your lane.
Active Lan eKeepin gAssis tcanno tcontinuously
keep your vehicl ein it slane.
GWARNIN G
Active Lan eKeepin gAssis tcanno talways
clearly detec tlan emarkings.
In suc hcases, Active Lan eKeepin gAssis t
can :
Rgivean unnecessary warning and then
mak e acourse-correcting brak eapplication
to th evehicl e
Rnotgiv e a warning or interven e
There is aris kof an accident.
Always pay particular attention to th etraffic
situation and keep within th elane, especially
if Active Lan eKeepin gAssis talerts you. Ter -
minate th eintervention in anon-critical driv-
ing situation .
The system may be impaire dor may no tfunction
if:
Rthere is poor visibility, e.g. due to insufficien t
illumination of th eroad ,or due to snow, rain ,
fog or spray
Rthere is glare, e.g. from oncomin gtraffic, th e
sun or reflection from other vehicles (e.g. if
th eroad surfac eis wet )
Rthewindshield is dirty, fogged up, damaged or
covered, for instance by asticker, in th evicin-
it y of th ecamera
Rth eradar sensor sin th efron tor rear bumpers
or th eradiato rtrim are dirty, e.g. obscured by
snow
Rthere are no ,several or unclear lan emarking s
for alane, e.g. in areas wit hroad construction
wor k
Rthelan emarking sare wor naway, dark or cov-
ere dup, e.g. by dir tor snow
Rth edistanc eto th evehicl ein fron tis to osmall
and th elan emarking sthus canno tbe detec -
te d
Rth elan emarking schang equickly, e.g. lanes
branch off ,cross on eanother or merge
Rth eroad is narrow and windin g
Rthere are highly variable shad econdition son
th eroadway
If no vehicl eis detecte din th eadjacent lan eand
broke nlan emarking sare detected, no lane-cor-
recting brak eapplication is made .
Warning vibration in th esteering wheel
A warning may be given if afron twhee lpasses
ove r alan emarking .It will warn you by mean sof
intermittent vibration in th esteering whee lfor
up to 1. 5seconds.
Driving systems189
Driving and parking
Z

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.
If a lane-correcting brake application occurs,
display :appears 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 detected 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 recog-
nized.
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. Oncoming vehicles, over-
taking vehicles and vehicles in adjacent lanes
can be detected.
A further lane-correcting brake application can
only occur after your vehicle has returned to the
original lane.
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 h.
Ra loss of tire pressure or a defective tire has
been detected and displayed.
Ran obstacle has been detected in the lane in
which you are driving.
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.
Ryou brake or accelerate significantly.
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 are no longer detected.
Activating/deactivating Active Lane
Keeping Assist
XTo activate: press button ;.
Indicator lamp :lights up. The Lane Keep‐
ing Assist Onmessage appears on the
multifunction display. If all conditions have
been satisfied, a warning or steering inter-
vention 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
190Driving systems
Driving and parking

(Ypage 203) appear in green. Active Lane
Keeping Assist is ready for use.
XTo deactivate: press button;.
Indicator lamp :goes out. The Active Lane
Keeping Assist is deactivated. The Lane
Keeping Assist Offmessage appears on
the multifunction display.
Selecting Standard or Adaptive setting
XIn the DriveAssistmenu on the on-board
computer, select the Active Lane Keep‐
ing Assistfunction (Ypage 205).
XSelect settingStandardorAdaptive.
When Standardis selected, no warning vibra-
tion occurs if:
Ryou switch on the turn signals. In this case,
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 if:
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 freeway.
Rthe system detects solid lane markings.
The warning vibration occurs later if:
Rthe road has narrow lanes
Ryou cut the corner on a bend
Driving systems191
Driving and parking
Z

Important safety notes
GWARNING
If you operate information systems and com-
munication equipmen tintegrate din th evehi-
cle when driving ,you may be distracte dfrom
th etraffic situation .You could also lose con-
trol of th evehicle. Ther eis aris kof an acci-
dent.
Only operate this equipmen 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 36).
Displays and operation
Instrument cluster lighting
The lighting in th einstrumen tcluster, in th edis-
plays and th econtrol sin th evehicl einterior can
be adjusted usin gbrightness control knob :.
XTurn brightness control knob :up or down .
If you tur nth eligh tswitch (Ypage 107) to th e
T, ÃorL position ,th ebrightness
will depend upon th ebrightness of th eambi -
en tlight.
iThe ligh tsensor in th einstrumen tcluste r
automatically control sth ebrightness of th e
multifunction display.
In daylight, th edisplays in th einstrumen t
cluste rare illuminated. Adimming function is
no tpossible in daylight.
Speedometer with segments
The speedometer is divided int osegments
depending on th eequipment.
The segments in th espeedometer indicat e
whic hspee drange is available.
RCruis econtrol activated (Ypage 151):
The segments ligh tup from th estore dspee d
to th een dof th escale.
RDistanc ePilot DISTRONI Cis activated
(Ypage 155):
On eor two segments in th eset spee drange
ligh tup.
RDistanc ePilot DISTRONI Cdetects avehicl ein
fron tmoving mor eslowly than th estore d
speed:
The segments between th espee dof th evehi-
cle in fron tand th estore dspee dligh tup.
192Displays and operation
On-board computer and displays

Tachometer
!
Do not drive in the overrevving range, as this
could damage the engine.
The red band in the tachometer indicates the
engine's overrevving range.
The fuel supply is interrupted to protect the
engine when the red band is reached.
Outside temperature display
You should pay special attention to road condi-
tions when temperatures are around freezing
point.
Bear in mind that the outside temperature dis-
play indicates the temperature measured and
does not record the road temperature.
The outside temperature display is in the multi-
function display (
Ypage 194).
Changes in the outside temperature are dis-
played after a short delay.
Coolant temperature gauge
GWARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
!If the coolant temperature is too high, a dis-
play message is shown.
If the coolant temperature display is in the
area marked in red, do not continue driving.
Otherwise, the engine will be damaged.
The coolant temperature gauge is in the lower
section of the tachometer (
Ypage 36).
Under normal operating conditions and at the
correct coolant level, the display may rise to the
red mark.
Operating the on-board computer
:Multifunction display
;Right control panel
=Left control panel
XTo activate the on-board computer: switch
on the power supply.
You can control the multifunction display and
the settings in the on-board computer using the
buttons on the multifunction steering wheel.
Left control panel
òROpens a menu list
9
:Press briefly:
RScrolls in lists
RSelects a menu or function
RIn the RadioorMediamenu:
opens a track or station list and
selects a station, an audio track or
a video scene.
RIn the Telephonemenu: switches
to the phone book and selects a
name or a telephone number
9
:Press and hold:
RScrolls quickly through all lists
RIn the RadioorMediamenu:
selects a station, audio track or
video scene using rapid scrolling
RIn the Telephonemenu: starts
rapid scrolling if the phone book is
open
Displays an doperation193
On-boa rd computer and displays
Z

aRIn all menus: confirms the selected
entry in the list
RIn theRadioorMediamenu:
opens the list of available radio
sources or media
RIn the Telephonemenu: switches
to the phone book and starts dial-
ing the selected number
ñRVehicles with multimedia system
Audio 20:
Switches off voice control for nav-
igation (see the manufacturer's
operating instructions)
RVehicles with multimedia system
COMAND:
Switches off the Voice Control
System (see the separate operat-
ing instructions)
%Press briefly:
RBack
RIn the RadioorMediamenu: exits
the track or station list or list of
available radio sources or media
RHides display messages
RExits the phone book/redial mem-
ory
%Press and hold:
RCalls up the standard display in the
Tripmenu
Right control panel
~RRejects or ends a call
RExits the phone book/redial mem-
ory
6RMakes or accepts a call
RSwitches to the redial memory
W
XRAdjusts the volume
8RMute
óRVehicles with multimedia system
Audio 20:
Switches on voice control for nav-
igation (see the manufacturer's
operating instructions)
RVehicles with multimedia system
COMAND:
Switches on the Voice Control Sys-
tem (see the separate operating
instructions)
Multifunction display
:Drive program (Ypage 134)
;Transmission position (Ypage 135)
=Additional speedometer
?Display
ATime
BOutside temperature (Ypage 193)
Display panel ?shows the selected menu or
submenu and display messages.
XTo open the menu list: pressòon the
steering wheel.
Display panel ?appears in the menu list.
Possible displays in the multifunction dis-
play:
RZ Gearshift recommendation, when shifting
manually (Ypage 140)
Rj Parking Pilot (Ypage 166)
R¯ Cruise control (Ypage 151)
194Displays and operation
On-board computer and displays

RaDistance Pilot DISTRONIC Steering Pilot
(Ypage 159)
R_ Adaptive Highbeam Assist
(Ypage 109)
Rè ECO start/stop function (Ypage 127)
RëHOLD function (Ypage 161)
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
RDistance Pilot DISTRONIC
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 influenced 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.
Displays and operation
Switching the head-up display on/off
XPress button :.
When the head-up display is switched on, the display appears in the driver's field of vision.
Standard displays in the head-up display
:Navigation messages
;Current speed
=Detected traffic signs
?Set speed for cruise control or Distance Pilot
DISTRONIC
Displays an doperation195
On-boa rd computer and displays
Z

AMG displays inthe head-up display
:Protection against reachin gth eoverrevving
range
;RACE TIMER lap
=RACE TIMER lap tim e
?Currentspee d
ACurrently selected gear ,gearshif toption s
when shiftin gmanually
BCurren tengin espee d
Setting options
You can adjust th efollowin gsettings in th e
head-up display submenu:
Radjust th epositio nof th ehead-up display on
th ewindshield (Ypage 206)
Radjust thebrightness of th edisplays in th e
head-up display (Ypage 206)
Rselect desired displays in th ehead-up display
(Ypage 206)
Usin gth eDispla yConten t
function ,you
can ,depending on your vehicle's equipment,
choos ebetween four standard displays. The
selected contents then appear in th ehead-up
display.
In Mercedes-AM Gvehicles, you can choos e
between further AM Gdisplays in addition to
th estandard displays, depending on your
vehicle's equipment.
If you select adisplay wit htraffic signs, detec-
te dtraffic sign sfrom Traffic Sig nAssist
appear in th ehead-up display.
Menus and submenus
Menu overview
Press th eò buttonon th esteering whee lto
open th emen ulist .
Operating th eon-board computer (
Ypage 193).Dependin
gon th evehicl eequipment, you can
select th efollowin gmenu:
RTri pmen u (Ypage 196)
RNavimen u(navigation instructions)
(Ypage 198)
RRadiomen u (Ypage 200)
RMediamenu (Ypage 200)
RTelephonemenu (Ypage 202)
RAssistanc eGraphi cmenu (Ypage 203)
RServic emenu (Ypage 203)
RSettingsmenu (Ypage 203)
RAMGmenuin Mercedes-AM Gvehicles
(Ypage 208)
Trip menu
Standard display
XPress and hold th e% buttonon th esteer -
ing whee luntil th eTri pmen uwit htrip odom -
eter :and odometer ;appears.
196Menus and submenus
On-board computer and displays

Displaying therange an dcurrent fuel
consumption
:Range of th efue lsupply
;Curren tfue lconsumption
=Recuperation display
XPress th eò buttonon th esteerin gwhee l
to ope nth emen ulist .
XPress :or9 on thesteerin gwhee lto
selec tth eTri pmenu.
XConfir mby pressing aon thesteerin g
wheel.
XPress 9or: to selec tth edisplay.
Approximat erange :that can be covered is
calculated accordin gto your curren tdrivin g
style and th eamount of fue lin th etank .If
there is only asmall amount of fue llef tin th e
fue ltank , avehicle bein grefuele dC
appears instead of approximat erange :.
Recuperation display =shows you if energ y
has bee nrecuperated from th ekineti cenerg y
in overrun mode and saved in th ebattery.
Recuperation display =depend son th e
engin einstalled and is therefore no tavailable
in all vehicles .
ECO display
XPressòon thesteerin gwhee lto ope nth e
men ulist .
XPress :or9 on thesteerin gwhee lto
selec tth eTri pmenu.
XConfir mby pressing aon thesteerin g
wheel.
XPress th e: or9 buttonto selec tEC O
display.
If th eignition remain sswitched of ffo rlonger
than four hours, th eEC Odisplay will be auto-
matically reset . Fo
rfurther information on th eEC Odisplay, see
(
Ypage 147).
Trip compute r"From Start" or "From
Reset "
:Distanc e
;Driving time
=Average speed
?Average fue lconsumption
XPress th eò buttonon th esteerin gwhee l
to ope nth emen ulist .
XPress :or9 on thesteerin gwhee lto
selec tth eTri pmenu.
XConfir mby pressing aon thesteerin g
wheel.
XPress :or9 to selec tFro mStartor
Fro mReset.
The values in th eFro mStartsubmen uare
calculated from th estart of ajourney, whil e
th evalues in th eFro mReset
submen uare
calculated from th elast time th esubmen u
was reset (
Ypage 198).
The trip compute ris automatically reset in th e
followin gcases FromStart
:
Rtheignition has bee nswitched of ffo rmore
than four hours.
R99 9hour shav ebee nexceeded.
R9,999 miles hav ebee nexceeded.
Whe n9999 hour sor 99,999 milesh ave been
exceeded, the trip computer is automatically
reset From Reset
.
Digital speedometer
XPress òon the steering wheel to open the
menu list.
XPress :or9 on the steering wheel to
select the Tripmenu.
Menus and submenus197
On-board computer and displays
Z

XConfirmbypressing aon the steering
wheel.
XPress the :or9 button to select the
digit al speedometer.
Resetting values
XPress the òbutton on the steering wheel
to open the menu list.
XPress :or9 on the steering wheel to
select the Tripmenu.
XConfirmbypressing aon the steering
wheel.
XPress the :or9 button to select the
function that you wishto reset.
XPress abriefly.
XPress :to select Yesand press ato
confirm.
You can reset the values of the foll owing func-
tions:
RTrip odometer
R"From Start" tr ipcomputer
R"From Reset" tr ipcomputer
RECO display
If you reset the values inthe ECO display, the
values inthe "From Start" tr ipcomputer are
also reset. Ifyou reset the values inthe "From
St art" tr ipcomputer, the values inthe ECO
displ ay are also reset.
Navigation system menu
Displaying navigation instructions
In the Navimenu, the multifunction display
shows navigation instructions. You can find fur-
ther information on navigation instructions in
the multimedia systeminthe Digital Operator's
Manual.
XSwit ch on the multimed iasystem.
XPress the òbutton on the steering wheel
to open the menu list.
XPress :or9 on the steering wheel to
select the Navimenu.
XConfirmbypressing aon the steering
wheel.
Route guidance not active
:Direction of travel
;Current road
Route guidance active
No change of direction announced
:Distance to the next destination
;Estimated arrival time
=Distance to the next change of direction
?Current road
198Menus and submenus
On-board computer and displays