2018 MERCEDES-BENZ C-CLASS CABRIOLET transmission

Suspension tuningSETUP (on-board computer,
Mercedes-AMG vehicles) ............... 209
Switching air-recirculation mode
on/off .................................................1 20
Switching on media mode
Via the device list .......................... 261
T
Tachometer ........................................ 193
Tail lamps
Display message ............................ 224
Tank
see Fuel tank
Tank content
Fuel gauge ....................................... 36
Technical data
Capacities ...................................... 340
Information .................................... 338
Vehicle data ................................... 345
Telephone
Accepting a call (multifunction
steering wheel) .............................. 202
Authorizing a mobile phone (con-
necting) ......................................... 260
Connecting a mobile phone (gen-
eral information) ............................ 260
Display message ............................ 239
Introduction ................................... 202
Menu (on-board computer) ............ 202
Number from the phone book ........ 202
Redialing ........................................ 203
Rejecting/ending a call ................. 202
see also Digital Operator's Man-
ual .................................................. 253
Switching between mobile
phones ........................................... 261
see Mobile phone
Temperature
Coolant (display in the instrument
cluster) .......................................... 193
Engine oil (on-board computer,
Mercedes-AMG vehicles) ............... 208
Outside temperature ...................... 193
Setting (climate control) ................ 118
Transmission oil (on-board com-
puter, Mercedes-AMG vehicles) ..... 208 Through-loading feature
................... 265
Timing (RACETIMER) ......................... 210
Tire pressure
Calling up (on-board computer) ..... 319
Checking manually ........................ 318
Display message ............................ 234
Maximum ....................................... 318
Not reached (TIREFIT) .................... 299
Notes ............................................. 316
Reached (TIREFIT) .......................... 300
Recommended ............................... 315
Using the TIREFIT kit ...................... 298
Tire pressure loss warning system
General notes ................................ 318
Important safety notes .................. 318
Restarting ...................................... 319
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 321
Function/notes ............................. 319
Genera l note
s ................................ 319
Important safety notes .................. 319
Radio type approval for the tire
pressure monitor ........................... 322
Restarting ...................................... 321
Warning lamp ................................. 251
Warning message .......................... 321
Tire pressure sensors
Display message ............................ 235
Tire-change tool kit ........................... 296
TIREFIT kit
Important safety notes .................. 298
Storage location ............................ 296
Tire pressure not reached .............. 299
Tire pressure reached .................... 300
Using ............................................. 298
Tires
Aspect ratio (definition) ................. 331
Average weight of the vehicle
occupants (definition) .................... 329
Bar (definition) ............................... 329
Changing a wheel .......................... 331
Characteristics .............................. 329
Checking ........................................ 313
Curb weight (definition) ................. 330
Definition of terms ......................... 329
Direction of rotation ...................... 332
Display message ............................ 234
Index21

Traction systemsee ETS/4ETS (Electronic Trac-
tion System)
Traffic reports
see also Digital Operator's Man-
ual .................................................. 253
Traffic Sign Assist
Activating/deactivating the warn-
ing function .................................... 204
Display message ............................ 231
Function/notes ............................. 182
Important safety notes .................. 182
Instrument cluster display ............. 182
Transfer case ..................................... 141
Transmission
Display message ............................ 237
see Automatic transmission
Transmission oil
Temperature (on-board computer,
Mercedes-AMG vehicles) ............... 208
Transmission position display ......... 134
Transporting the vehicle .................. 308
Trim pieces (cleaning instruc-
tions) .................................................. 293
Trip computer (on-board com-
puter) .................................................. 197
Trip odometer
Calling up ....................................... 196
Resetting (on-board computer) ...... 198
Trunk
Important safety notes .................... 83
Locking separately ........................... 84
Opening (automatically from
inside) .............................................. 84
Opening (automatically from out-
side) ................................................. 84
Opening/closing (manually from
outside) ............................................ 83
Trunk lid
Display message ............................ 238
Opening dimensions ...................... 345
Trunk partition
Display message ............................ 239
General notes .................................. 90
Opening/closing .............................. 90
Turn signals
Display message ............................ 224 Switching on/off ........................... 108
Two-way radio
Frequencies ................................... 338
Installation ..................................... 338
Transmission output (maximum) .... 338
Type identification plate
see Vehicle identification plate
U
UnlockingEmergency unlocking ....................... 83
From inside the vehicle (central
unlocking button) ............................. 82
USB devices
Connecting to the Media Inter-
face ............................................... 262
V
Vanity mirror (in the sun visor) ........ 269
Vehicle
Correct use ...................................... 31
Data acquisition ............................... 32
Display message ............................ 236
Electronics ..................................... 338
Equipment ....................................... 28
Individual settings .......................... 203
Limited Warranty ............................. 32
Loading .......................................... 322
Locking (in an emergency) ............... 83
Locking (SmartKey) .......................... 76
Lowering ........................................ 336
Maintenance .................................... 29
Operating safety .............................. 30
Operation outside the USA/
Canada ............................................ 29
Parking .......................................... 143
Parking for a long period ................ 146
Pulling away ................................... 126
Raising ........................................... 333
Reporting problems ......................... 31
Securing from rolling away ............ 332
Technical data ............................... 338
Towing away .................................. 306
Transporting .................................. 308
Unlocking (in an emergency) ........... 83
Unlocking (SmartKey) ...................... 76
Vehicle data ................................... 345
Index23

Protecting the environment
General notes
HEnvironmental note
Daimler's declared policy is one of compre-
hensive environmental protection.
The objectives are for the natural resources
that form the basis of our existence on this
planet to be used sparingly and in a manner
that takes the requirements of both nature
and humanity into account.
You too can help to protect the environment
by operating your vehicle in an environmen-
tally responsible manner.
Fuel consumption and the rate of engine,
transmission, brake and tire wear are affected by these factors:
Roperating conditions of your vehicle
Ryour personal driving style
You can influence both factors. You should
bear the following in mind:
Operating conditions:
Ravoid short trips as these increase fuel con-
sumption.
Ralways make sure that the tire pressures
are correct.
Rdo not carry any unnecessary weight.
Rremove roof racks once you no longer need
them.
Ra regularly serviced vehicle will contribute
to environmental protection. You should
therefore adhere to the service intervals.
Ralways have service work carried out at a
qualified specialist workshop.
Personal driving style:
Rdo not depress the accelerator pedal when
starting the engine.
Rdo not warm up the engine when the vehicle
is stationary.
Rdrive carefully and maintain a safe distance
from the vehicle in front.
Ravoid frequent, sudden acceleration and
braking.
Rchange gear in good time and use each gear
only up to Ôof its maximum engine speed.
Rswitch off the engine in stationary traffic.
Rkeep an eye on the vehicle's fuel consump-
tion.
Environmental concerns and recom-
mendations
Wherever the Operator's Manual requires you to
dispose of materials, first try to regenerate or re-
use them. Observe the relevant environmental
rules and regulations when disposing of materi-
als. In this way you will help to protect the envi-
ronment.
Genuine Mercedes-Benz parts
HEnvironmental note
Daimler AG also supplies reconditioned major
assemblies and parts which are of the same
quality as new parts. They are covered by the
same Limited Warranty entitlements as new
parts.
!Air bags and Emergency Tensioning Devi-
ces, as well as control units and sensors for
these restraint systems, may be installed in
the following areas of your vehicle:
Rdoors
Rdoor pillars
Rdoor sills
Rseats
Rcockpit
Rinstrument cluster
Rcenter console
Do not install accessories such as audio sys-
tems in these areas. Do not carry out repairs or welding. You could impair the operating
efficiency of the restraint systems.
Have aftermarket accessories installed at a
qualified specialist workshop.
You could jeopardize the operating safety of
your vehicle if you use parts, tires and wheels as
well as accessories relevant to safety which
have not been approved by Mercedes-Benz. This
could lead to malfunctions in safety-relevant
Genuine Mercedes-Benz parts27
Introduction
Z

Important safety notes
The intervention of PRE-SAFE®PLUScanno t
preven tan imminent collision .
The driver is no twarned about th eintervention
of PRE-SAF E
®PLUS.
PRE-SAF E®PLUSdoes no tinterven eif th evehi-
cle is backin gup.
When driving ,or when parking or exiting apark -
ing spac ewit hassistanc efrom Parking Pilot ,
PRE-SAF E
®PLUSwill no tapply th ebrakes.
Function
PRE-SAF E®PLUSintervenes in certain situa-
tion sif th eradar sensor system detects an
imminent head-on or rear-end collision .
PRE-SAF E
®PLUStakes th efollowin gmeasures
depending on th ehazardous situation detected:
Rif th eradar sensor system detects that a
head-on collision is imminent ,th eseat belt s
are pre-tensioned.
Rif th eradar sensor system detects that arear -
en dcollision is imminent :
-thebrak epressur eis increased if th edriver
applie sth ebrakes when th evehicl eis sta-
tionary.
-th eseat belt sare pre-tensioned.
The PRE-SAF E®PLUSbraking application is can -
celed:
Rif th eaccelerato rpedal is depressed when a
gear is engage d
Rif theris kof acollision passes or is no longer
detecte d
Rif Distanc ePilot DISTRONI Cindicates an
intention to pull away
If th ehazardous situation passes without result -
ing in an accident, th eoriginal setting sare
restored .
Automatic measures after an acci-
dent
Immediately after an accident, th efollowin g
measures are implemented, depending on th e
typ eand severit yof th eimpact :
Rthehazard warning lamp sare switched on
Rth eemergenc ylighting is activated
Rth evehicl edoor sare unlocked
Rth efron tside windows are lowered
Rvehicles wit h amemory function :th eelectri-
call yadjustable steering whee lis raised when
th edriver' sdoor is opened
Rth eengin eis switched off and th efuel suppl y
is cut off
Rvehicles wit hmbrace :automatic emergenc y
call
Children in the vehicle
Important safety notes
Acciden tstatistics sho wthat children secured
in th erear seat sare safer than children secured
in th efront-passenger seat .Fo rthis reason ,
Mercedes-Ben zstrongly advises that you instal l
a child restrain tsystem on arear seat .Children
are generally bette rprotected there .
If achild younger than twelve years old and
under 5ft (1.50 m) in height is traveling in th e
vehicle:
Ralways secure th echild in achild restrain t
system suitable for Mercedes-Ben zvehicles.
The child restrain tsystem must be appropri-
ate to th eage, weigh tand siz eof th echild
Rbe sur eto observ eth einstruction sand safet y
note sin this section in addition to th echild
restrain tsystem manufacturer' sinstallation
instruction s
Rbe sureto observ eth einstruction sand safet y
note son th e"Occupant classification system
(OCS)" (
Ypage 51)
GWARNIN G
If you leav echildren unsupervised in th evehi-
cle ,they could set it in motion by, for example:
Rrelease th eparking brake.
Rshif tth eautomatic transmission out of th e
parking position P.
Rstart theengine.
In addition ,they may operate vehicl eequip-
men tand become trapped .Ther eis aris kof
an acciden tand injury.
When leaving th evehicle, always tak eth e
SmartKey wit hyou and loc kth evehicle. Never
leav echildren unsupervised in th evehicle.
Children in the vehicle59
Safety
Z

Adaptive Brake Assist
Generalinformation
iObserv eth e"Importan tsafet ynotes" sec -
tion (Ypage 64) .
Wit hth ehelp of adaptive Brake Assist, th edis-
tance warning signal can detec tobstacles that
are in th epat hof your vehicl efor an extended
period of time.
If adaptive Brake Assis tdetects aris kof colli-
sion wit hth evehicl ein front, it calculates th e
braking force necessar yto avoi d acollision .If
you apply th ebrakes forcefully, adaptive Brake
Assis twill automatically increas eth ebraking
force to alevel suitable for th etraffic conditions.
Adaptive Brake Assis tprovides braking assis-
tance in hazardous situation sat speeds abov e
4 mph (7 km/h). It uses radar sensor technology
to assess th etraffic situation .
Up to aspee dof approximately 15 5mph
(25 0km/h), Adaptive Brake Assis tis capable of
reacting to moving objects that hav ealready
been detecte das suc hat least once ove rth e
period of observation .
Up to aspee dof approximately 44 mph
(70 km/h), Adaptive Brake Assis treacts to sta-
tionary obstacles.
If adaptive Brake Assis tdemand sparticularly
high braking force ,preventative passenger pro -
tection measures (PRE-SAF E
®)are activated
simultaneously (Ypage 58).
XKeepth ebrak epedal depressed until th e
emergenc ybraking situation is over.
AB Sprevents th ewheels from locking .
The brakes will wor knormally again if:
Ryou release th ebrak epedal .
Rthere is no longer any danger of acollision .
Rno obstacle is detecte din fron tof your vehi-
cle .
Adaptive Brake Assis tis then deactivated.
Important safety notes
iObserv eth e"Importan tsafet ynotes" sec -
tion for drivin gsafet ysystems (Ypage 64).
GWARNIN G
Adaptive Brake Assis tcanno talways clearly
identify objects and complex traffic situa-
tions.
In suc hcases, Adaptive Brake Assis tcan :
Rinterven eunnecessarily
Rno tinterven e
There is aris kof an accident.
Always pay careful attention to th etraffic sit -
uation and be read yto brake. Terminate th e
intervention in anon-critical drivin gsituation .
GWARNIN G
Adaptive Brake Assis tdoes no treact:
Rto people or animals
Rto oncomin gvehicles
Rto crossing traffic
Rwhen cornering
As aresult ,th eAdaptive Brake Assis tmay no t
interven ein all critical conditions. There is a
ris kof an accident.
Always pay careful attention to th etraffic sit -
uation and be read yto brake.
Always adapt your spee dto suit th eprevailing
road and traffic conditions.
Due to th enature of th esystem, particularly
complicated but non-critical drivin gcondition s
may also caus eBrake Assis tto intervene.
If adaptive Brake Assis tis no tavailable due to a
malfunction in th eradar sensor system, th e
brak esystem remain savailable wit hfull brak e
boosting effec tand BAS.
ESP®(Electron ic Stability Program)
Gene ral notes
iObserv eth e"Importan tsafet ynotes" sec -
tion (Ypage 64) .
ES P
®monitors drivin gstabilit yand traction ,i.e .
powe rtransmission between th etires and th e
road surface.
If ES P
®detects that th evehicl eis deviating from
th edirection desired by th edriver ,on eor mor e
wheels are braked to stabiliz eth evehicle. The
engin eoutput is also modifie dto keep th evehi-
cle on th edesired cours ewithin physical limits .
ES P
®assist sth edriver when pullin gaway on
Driving safety systems67
Safety
Z

XTo arm:lock the vehicle with the SmartKey or
KEYLESS-GO.
Indicator lamp :flashes. The alarm system
is armed after approximately ten seconds.
XTo disarm: unlock the vehicle with the Smart-
Key or KEYLESS-GO.
or
XInsert the SmartKey into the ignition lock.
or
XVehicles with KEYLESS-GO start function
or KEYLESS-GO: press the Start/Stop but-
ton.
The SmartKey must be in the vehicle.
A visual and audible alarm is triggered if the
alarm system is armed and you open:
Ra door
Rthe vehicle with the mechanical key
Rthe trunk lid
Rthe hood
Rthe stowage compartment/telephone com-
partment under the armrest in vehicles with
automatic transmission
XTo stop the alarm with the SmartKey:
press the %or& button on the Smart-
Key.
The alarm is stopped.
or
XVehicles with KEYLESS-GO start-function
or KEYLESS-GO: remove the Start/Stop but-
ton from the ignition lock (
Ypage 124).
XInsert the SmartKey into the ignition lock.
The alarm is stopped.
XTo stop the alarm using KEYLESS-GO:
grasp the outside door handle. The SmartKey
must be outside the vehicle.
The alarm is stopped.
or
XPress the Start/Stop button on the dash-
board. The SmartKey must be inside the vehi-
cle.
The alarm is stopped.
The alarm is not switched off, even if you close
the op en d
oor that triggered it, for example.
iIf the alarm continues for more than
30 seconds, the mbrace emergency call sys-
tem automatically notifies the Customer
Assistance Center. This is done either by text
message or data connection. The emergency call system sends a message
or establishes a data connection provided
that:
Ryou have subscribed to the mbrace service.
Rthe mbrace service has been activated
properly.
Rthe necessary mobile phone network is
available.
Protection against theft75
Safety
Z

SmartKey
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
GWARNING
If you attach heavy or large objects to the
SmartKey, the SmartKey could be uninten-
tionally turned in the ignition lock. This could
cause the engine to be switched off. There is a risk of an accident.
Do not attach any heavy or large objects to the
SmartKey. Remove any bulky key rings before
inserting the SmartKey into the ignition lock.
!Keep the SmartKey away from strong mag-
netic fields. Otherwise, the remote control
function could be affected.
Strong magnetic fields can occur in the vicin-
ity of powerful electrical installations.
Do not keep the SmartKey:
Rwith electronic devices, e.g. a mobile phone
or another SmartKey.
Rwith metallic objects, e.g. coins or metal foil.
Rinside metallic objects, e.g. a metal case.
This can affect the functionality of the Smart- Key. Vehicles with KEYLESS-GO start function:
do
not keep the SmartKey in the cargo compart-
ment. Otherwise, the SmartKey may not be
detected, e.g. when starting the engine using
the Start/Stop button.
A brief radio connection between the vehicle
and the SmartKey determines whether a valid
SmartKey is in, or in the direct vicinity of, the
vehicle. This occurs, for example:
Rwhen starting the engine
Rwhile driving
Rwhen the external door handles are touched
Rduring convenience closing
SmartKey functions
:& Locks the vehicle
;FOpens the trunk lid
=%Unlocks the vehicle
XTo unlock centrally: press the%button.
If you do not open the vehicle within approx-
imately 40 seconds of unlocking:
Rthe vehicle is locked again.
Rprotection against theft is reactivated.
XTo lock centrally: press the&button.
The SmartKey centrally locks and unlocks the
following components:
Rthe doors
Rthe trunk lid
Rthe glove box
Rthe fuel filler flap
The turn signals flash once when unlocking and
three times when locking.
You can also set an audible signal to confirm
that the vehicle has been locked. The audible
signal can be activated and deactivated via the
76SmartKey
Opening and closing

ProblemPossible causes/consequences andMSolutions
The engine cannot be
started using the Start/
Stop button. The Smart-
Key is in the vehicle.The vehicle is locked.
XUnlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 79) and replace it if necessary
(Ypage 79).
If this does not work:
XStart your vehicle with the SmartKey in the ignition lock.
There is interference from a powerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
You have lost a Smart-
Key.XHave the SmartKey deactivated at a qualified specialist workshop.
XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
You have lost the
mechanical key.XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
Doors
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
Unlocking and opening doors from
the inside
When a door is opened, the side window on that side opens slightly. When the door is closed, the
side window closes again.
!The side windows will not open/close if the
battery is discharged or if the side windows
have iced up. It will then not be possible to
close the door. Do not attempt to force the
door closed. You could otherwise damage the
door or the side window.
You can open a door from inside the vehicle
even if it has been locked. If the vehicle has been
locked with the SmartKey or with KEYLESS-GO,
opening a door from the inside will trigger the
anti-theft alarm system. Switch off the alarm
(
Ypage 74).
Doors81
Opening and closing
Z