2018 MERCEDES-BENZ C-CLASS CABRIOLET buttons

see Flat tire
see Towing away
Brightness control (instrument
cluster lighting) ................................... 35
Buttons on the steering wheel ......... 193
C
California
Important notice for retail cus-
tomers and lessees .......................... 28
Calling up a malfunction
see Display messages
Calling up the climate control bar
Multimedia system ........................ 258
Calling up the climate control
menu
Multimedia system ........................ 258
Camera
see 360° camera
see Rear view camera
Car
see Vehicle
Car wash
see Care
Care
360° camera ................................. 292
AIRCAP .......................................... 289
Car wash ........................................2 86
Carpets .......................................... 294
Display ...........................................2 93
Exhaust pipe .................................. 292
Exterior lights ................................ 291
General notes ................................ 286
Interior ...........................................2 93
Matte finish ................................... 289
Paint .............................................. 288
Plastic trim ....................................2 93
Power washer ................................ 288
Rear view camera .......................... 292
Roof lining ...................................... 294
Seat belt ........................................ 294
Seat cover ..................................... 294
Selector lever ................................ 293
Sensors ......................................... 292
Soft top .......................................... 289
Steering wheel ............................... 293
Trim pieces .................................... 293 Washing by hand ........................... 287
Wheels ........................................... 291
Wind deflector ............................... 289
Wind screen ................................... 290
Windows ........................................ 291
Wiper blades .................................. 291
Wooden trim .................................. 293
Cargo tie down rings ......................... 266
CD
see also Digital Operator's Man-
ual .................................................. 253
CD player (on-board computer) ........ 201
Center console
Lower section .................................. 39
Lower section (Mercedes-AMG
vehicles) .......................................... 40
Upper section .................................. 38
Central locking
Locking/u
nlocking (SmartKey) ........ 76
Change of address .............................. 29
Change of ownership .......................... 29
Changing the media source ............. 200
Charge-air pressure (on-board
computer, Mercedes-AMG vehi-
cles) .................................................... 208
Child
Restraint system .............................. 60
Child seat
Forward-facing restraint system ...... 63
LATCH-type (ISOFIX) child seat
anchors ............................................ 61
On the front-passenger seat ............ 63
Rearward-facing restraint system .... 63
Top Tether ....................................... 62
Children
Special seat belt retractor ............... 60
Children in the vehicle
Important safety notes .................... 59
Cigarette lighter ................................ 270
Cleaning
Mirror turn signal ........................... 292
Climate control
Control panel for dual-zone auto-
matic climate control ..................... 115
Controlling automatically ............... 117
Cooling with air dehumidification .. 117
Index7

General notes ................................ 270
Rear compartment .........................270
Soft top
AIRCAP ............................................ 91
Cleaning ......................................... 289
Display message ............................ 239
Important safety notes .................... 88
Opening/closing (SmartKey) ........... 90
Opening/closing (with soft-top
switch) ............................................. 89
Problem (malfunction) ..................... 93
Relocking ......................................... 90
wind screen ..................................... 91
Soft-top switch ....................................8 9
Sound
Switching on/off ........................... 254
Special seat belt retractor .................. 60
Specialist workshop ............................31
Speed, controlling
see Cruise control
Speedometer
Activating/deactivating the addi-
tional speedometer ........................ 207
Digital ............................................ 197
In the Instrument cluster ................. 36
Segments ...................................... 192
Selecting the display unit ............... 207
SPORT handling mode
Deactivating/activating
(Mercedes-AMG vehicles) ................6 9
Warning lamp ................................. 246
Sports exhaust system
AMG ............................................... 129
Standing lamps
Display message ............................2 24
Switching on/off ........................... 108
Start button
Display message ............................ 241
Start/Stop button
Key positions ................................. 124
Starting the engine ........................ 125
Start/stop function
see ECO start/stop function
Starting (engine) ................................ 125
Starting the engine
see Starting (engine)
STEER CONTROL .................................. 74 Ste
ering
Display message ............................ 238
Warning lamps ............................... 252
Steering assistant STEER CON-
TROL
see STEER CONTROL
Steering Pilot
Display message ............................ 232
with Distance Pilot DISTRONIC ...... 159
Steering wheel
Adjusting (electrically) ................... 101
Button overview ............................... 37
Buttons (on-board computer) ......... 193
Cleaning ......................................... 293
EASY ENTRY/EXIT feature ............. 101
Important safety notes .................. 100
Storing settings (memory func-
tion) ............................................... 106
Steering wheel heating
Problem (malfunction) ................... 101
Switching on/off ........................... 101
Steering wheel paddle shifters ........138
Stopwatch (RACETIMER) ................... 210
Stowage areas ................................... 263
Stowage compartments
Armrest (under) .............................2 64
Center console .............................. 264
Cup holders ................................... 267
Door ............................................... 265
Eyeglasses compartment ...............2 64
Glove box ....................................... 264
Important safety information ......... 263
Map pockets .................................. 265
Stowage net ................................... 265
see Stowage areas
Stowage net ....................................... 265
Stowage well beneath the trunk
floor .................................................... 267
Summer opening
see Convenience opening feature
Summer tires
In winter ........................................ 314
Sun visor ............................................ 268
Suspension setting
AIRMATIC ...................................... 164
AMG adaptive sport suspension
system ...........................................1 65
20Index

Overhead control panel
FunctionPage
:pSwitches the left-hand
reading lamp on/off110
;c Switches the front inte-
rior lighting on/off111
=| Switches the automatic
interior lighting control
on/off
111
?p Switches the right-
hand reading lamp on/off110
AEyeglasses compartment264
FunctionPage
BRear-view mirror
Automatic anti-glare104
CButtons for the garage door
opener278
DF Breakdown assistance
call button (mbrace system)273
EG SOS button (mbrace
system)272
Fï Info call button
(mbrace system)273
Overhead control panel41
At a glance

Pets in the vehicle
GWARNING
If you leave animals unattended or unsecured
in the vehicle, they could press buttons or
switches, for example.
As a result, they could:
Ractivate vehicle equipment and become
trapped, for example
Ractivate or deactivate systems, thereby
endangering other road users
Unsecured animals could also be flung around
the vehicle in the event of an accident or sud-
den steering or braking, thereby injuring vehi-
cle occupants. There is a risk of an accident
and injury.
Never leave animals unattended in the vehi-
cle. Always secure animals properly during
the journey, e.g. use a suitable animal trans-
port box.
Driving safety systems
Overview of driving safety systems
In this section, you will find information about
the following driving safety systems:
RABS (Anti-lock BrakingSystem)
(Ypage 64)
RBAS ( Brake Assist System) (Ypage 65)
RActive Brake Assist (Ypage 65)
RESP®(Electronic StabilityProgram)
(Ypage 67)
REBD ( Electronic Brake force Distribution)
(Ypage 71)
RADAPTIVE BRAKE (Ypage 71)
RActive Brake Assist with cross-traffic function (Ypage 71)
RSTEER CONTROL (Ypage 74)
Important safety notes
If you fail to adapt your driving style or if you are
inattentive, the driving safety systems can nei-
ther reduce the risk of an accident nor overridethe laws of physics. Driving safety systems are merely aids designed to assist driving. You are
responsible for maintaining the distance to the
vehicle in front, for vehicle speed, for braking in
good time, and for staying in lane. Always adapt
your driving style to suit the prevailing road and
weather conditions and maintain a safe distance
from the vehicle in front. Drive carefully.
The driving safety systems described only work
as effectively as possible when there is ade-
quate contact between the tires and the road
surface. Pay particular attention to the informa-
tion regarding tires, recommended minimum
tire tread depths etc. in the "Wheels and tires"
section (
Ypage 312).
In wintry driving conditions, always use winter
tires (M+S tires) and if necessary, snow chains.
Only in this way will the driving safety systems
described in this section work as effectively as
possible.
ABS (Anti-lock Braking System)
General information
ABS regulates brake pressure in such a way that
the wheels do not lock when you brake. This
allows you to continue steering the vehicle when
braking.
The ! ABS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out when the engine is running.
ABS works from a speed of about 5 mph
(8 km/h), regardless of road-surface conditions.
ABS works on slippery surfaces, even when you
only brake gently.
Important safety notes
iObserve the "Important safety notes" sec-
tion (Ypage 64).
GWARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally, further driving safety systems are deac-
tivated. There is an increased danger of skid-
ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
64Driving safety systems
Safety

Changing the settings of the locking
system
You can change the settings of the locking sys-
tem. This means that only the driver's door and
the fuel filler flap are unlocked when the vehicle
is unlocked. This is useful if you frequently travel
alone.
XTo change the setting:press and hold down
the % and& buttons simultaneously
for approximately six seconds until the bat-
tery check lamp (
Ypage 79) flashes twice.
If the setting of the locking system is changed
within the signal range of the vehicle, pressing
the & or% button:
Rlocks or
Runlocks the vehicle
The SmartKey now functions as follows:
XTo unlock: press the%button once.
XTo unlock centrally: press the%button
twice.
XTo lock: press the &button.
XTo restore the factory settings: press and
hold the %and& buttons simultane-
ously for approximately six seconds until the
battery check lamp (
Ypage 79) flashes
twice.
The KEYLESS-GO functions can be changed as
follows:
XTo unlock the driver's door: touch the inner
surface of the door handle on the driver's
door.
XTo unlock centrally: touch the inner surface
of the front-passenger door handle.
XTo lock centrally: touch the outer sensor
surface on one of the door handles.
Mechanical key
General notes
If the vehicle can no longer be locked or
unlocked with the SmartKey or KEYLESS-GO,
use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm sys-
tem will be triggered. Switch off the alarm
(
Ypage 74). If you unlock the vehicle using the mechanical
key, the fuel filler flap will not be unlocked auto-
matically.
XTo unlock the fuel filler flap:
insert the
SmartKey into the ignition lock.
Removing the mechanical key
XPush release catch :in the direction of the
arrow and at the same time remove mechan- ical key ;from the SmartKey.
Further information on locking/unlocking the
driver's door (
Ypage 83).
Inserting the mechanical key
XPush mechanical key ;completely into the
SmartKey until it engages and release
catch :is back in its basic position.
SmartKey battery
Important safety notes
GWARNING
Batteries contain toxic and corrosive substan- ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatalinjury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention
immediately.
HEnvironmental note
Batteries contain dangerous
substances. It is against the
law to dispose of them with
78SmartKey
Opening and closing

the household rubbish. They
must be collected separatelyand recycled to protect the
environment.
Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to a qualified spe-
cialist workshop or a special
collection point for used bat-
teries.
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. National guide-
lines must be observed during disposal. In Cal-
ifornia, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/index.cfm .
Mercedes-Benz recommends that you have the
batteries replaced at a qualified specialist work-
shop.
Checking the battery
XPress the &or% button.
The battery is working properly if battery
check lamp :lights up briefly.
The battery is discharged if battery check
lamp :does not light up briefly.
XChange the battery (Ypage 79).
If the SmartKey battery is checked within the
signal reception range of the vehicle, pressing
the & or% button:
Rlocks or
Runlocks the vehicle
iYou can get a battery at any qualified spe-
cialist workshop.
Replacing the battery
You require a CR 2025 3 V cell battery.
XTake the mechanical key out of the SmartKey
(Ypage 78).
XPress mechanical key ;into the SmartKey
opening in the direction of the arrow until bat-
tery compartment cover :opens. Do not
hold battery compartment cover :closed
while doing so.
XRemove battery compartment cover :.
XRepeatedly tap the SmartKey against your
palm until battery=falls out.
XInsert the new battery with the positive ter-
minal facing upwards. Use a lint-free cloth to
do so.
XMake sure that the surface of the battery is
free of lint, grease and other contaminants.
XInsert the front tabs of battery compartment
cover :into the housing first and then press
to close it.
XInsert mechanical key ;into the SmartKey
(Ypage 78).
XCheck the function of all SmartKey buttons on
the vehicle.
SmartKey79
Opening and closing
Z

XPull door handle;.
If the door is locked, locking knob :pops up.
The door is unlocked and opens.
Centrally locking and unlocking the
vehicle from the inside
You can centrally lock and unlock the vehicle
from the inside. The switches are on the driver’s
door.
XTo unlock: press button :.
XTo lock:press button ;.
When the front-passenger door is closed, the
vehicle is locked.
This does not lock or unlock the fuel filler flap or the glove box.
You cannot unlock the vehicle centrally from the
inside if the vehicle has been locked with the
SmartKey or KEYLESS-GO.
The doors can be opened from the inside.
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). If a locked door is opened from the inside, the
previous unlock status of the vehicle will be
taken into consideration if:
Rthe vehicle was locked using the locking but-
ton for the central locking, or
Rthe vehicle was locked automatically
The vehicle will be fully unlocked if it had previ-
ously been fully unlocked. If only the driver's
door had been previously unlocked, only the
door which has been opened from the inside is
unlocked.
Automatic locking feature
XTo deactivate: press and hold button :for
approximately five seconds until a tone
sounds.
XTo activate: press and hold button ;for
approximately five seconds until a tone
sounds.
If you press one of the two buttons and do not
hear a tone, the relevant setting has already
been selected.
The vehicle is locked automatically when the
ignition is switched on and the wheels are turn-
ing.
You could therefore be locked out if:
Rthe vehicle is being pushed
Rthe vehicle is being towed
Rthe vehicle is being tested on a dynamometer.
You can activate and deactivate the automatic
locking mechanism via the multimedia system
(see the Digital Operator's Manual).
82Doors
Opening and closing

Always drive with the head restraints instal-
led. Before driving off, make sure for every
vehicle occupant that the center of the head
restraint supports the back of the head at
about eye level.
Do not rotate the head restraints of the front and
rear seats. Otherwise, you cannot adjust the
height and angle of the head restraints cor-
rectly.
Using the fore-and-aft adjustment, adjust the
head restraint so that it is as close as possible to
your head.
GWARNING
If the driver's seat is not engaged, it could
move unexpectedly while the vehicle is in
motion. This could cause you to lose control of the vehicle. There is a risk of an accident.
Always make sure that the driver's seat is
engaged before starting the vehicle.
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the engine.
GWARNING
If you adjust the seat height carelessly, you or
other vehicle occupants could be trapped and
thereby injured. Children in particular could
accidentally press the electrical seat adjust-
ment buttons and become trapped. There is a
risk of injury.
While moving the seats, make sure that your
hands or other body parts do not get under the
lever assembly of the seat adjustment sys-
tem.
GWARNING
The seat belt does not offer the intended level of protection if you have not moved the back-
rest to an almost vertical position. When brak-
ing or in the event of an accident, you could
slide underneath the seat belt and sustain
abdomen or neck injuries, for example. This
poses an increased risk of injury or even fatal injury.
Adjust the seat properly before beginning
your journey. Always ensure that the backrest
is in an almost vertical position and that the
shoulder section of your seat belt is routed
across the center of your shoulder.
!To avoid damage to the seats and the seat
heating, observe the following information:
Rkeep liquids from spilling on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
Rif the seat covers are damp or wet, do not
switch on the seat heating. The seat heat-
ing should also not be used to dry the seats.
Rclean the seat covers as recommended;
see "Interior care".
Rdo not transport heavy loads on the seats.
Do not place sharp objects on the seat
cushions, e.g. knives, nails or tools. The
seats should only be occupied by passen-
gers, if possible.
Rwhen the seat heating is in operation, do
not cover the seats with insulating materi-
als, e.g. blankets, coats, bags, seat covers,
child seats or booster seats.
!Make sure that there are no objects in the
footwell under or behind the seats when mov-
ing the seats back. There is a risk that the
seats and/or the objects could be damaged.
iFor more information, contact a qualified
specialist workshop.
iRelated topic:
RRear bench seat through-loading feature
(Ypage 265)
Seats95
Seats, steering wheel and mirrors
Z