2018 MERCEDES-BENZ C-CLASS CABRIOLET oil

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

Notes on breaking-in a new vehicle
Important safety notes
The sensor system of some driving and driving
safety systems adjusts automatically while a
certain distance is being driven after the vehiclehas been delivered or after repairs. Full system
effectiveness is not reached until the end of this
teach-in procedure.
New and replaced brake pads and discs only
reach their optimum braking effect after several hundred kilometers of driving. Compensate for
this by applying greater force to the brake pedal.
The first 1000 miles (1500 km)
The more you look after the engine when it is
new, the more satisfied you will be with its per-
formance in the future.
RYou should therefore drive at varying vehicle
and engine speeds for the first 1000 miles
(1500 km).
RAvoid heavy loads, e.g. driving at full throttle,during this period.
RWhen changing gears manually, change up in
good time, before the tachometer needle rea-
ches Ôof the way to the red area of the tach-
ometer.
RDo not manually shift to a lower gear to brake
the vehicle.
RTry to avoid depressing the accelerator pedal
beyond the pressure point (kickdown).
RAll vehicles (except Mercedes-AMG vehi-
cles): ideally, for the first 1,000 miles
(1,500 km), drive in drive program E.
Additional breaking-in notes for Mercedes-AMG
vehicles:
RDo not drive faster than 85 mph (140 km/h)
for the first 1,000 miles (1,500 km).
ROnly briefly allow the engine to reach a max-
imum engine speed of 4,500 rpm briefly.
RChange gear in good time.
RIdeally, for the first 1,000 miles (1,500 km),
drive in program C.
After 1000 miles (1500 km), you ca
n increase
the engine speed gradually and accelerate the
vehicle to full speed.
You should also observe these notes on break-
ing in if the engine or parts of the drive train on
your vehicle have been replaced. Always observe the maximum permissible
speed.
Locking rear axle differential
(Mercedes-AMG C 63/C 63 S)
Your vehicle is equipped with a self-locking dif-
ferential on the rear axle.
Change the oil to improve protection of the rear
axle differential:
Rafter a breaking-in period of 1,850 miles
(3,000 km)
Revery 31,000 miles (50,000 km) or 3 years
These oil changes prolong the service life of the
differential. Have the oil change carried out at a
qualified specialist workshop.
Driving
Important safety notes
GWARNING
Objects in the driver's footwell may restrict
the clearance around the pedals or block a
depressed pedal. This jeopardizes the oper-
ating and road safety of the vehicle. There is a risk of an accident.
Stow all objects securely in the vehicle so that
they do not get into the driver's footwell.
When using floormats or carpets, make sure
that they are properly secured so that they do not slip or obstruct the pedals. Do not place
several floormats or carpets on top of one
another.
GWARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
Rshoes with thick soles
Rshoes with high heels
Rslippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals.
122Driving
Dr iving an d parking

GWARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving.
GWARNING
If the parking brake has not been fully
released when driving, the parking brake can:
Roverheat and cause a fire
Rlose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off.
!Do not warm up the engine with the vehicle
stationary. Drive off immediately. Avoid high
engine speeds and driving at full throttle until
the engine has reached its operating temper-
ature.
Only shift the automatic transmission to the
desired drive position when the vehicle is sta-
tionary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery roads.
You could otherwise damage the drive train.
!Mercedes-AMG vehicles: at low engine oil
temperatures below 68 ‡ (+20 †), the max-
imum engine speed is restricted in order to
protect the engine. To protect the engine and
maintain smooth engine operation, avoid driv-
ing at full throttle when the engine is cold.
Key positions
SmartKey
gTo remove the SmartKey
1Power supply for some consumers, such as
the windshield wipers
2Ignition (power supply for all consumers)
and drive position
3To start the engine
iThe SmartKey can be turned in the ignition
lock even if it is not the correct SmartKey for
the vehicle. The ignition is not switched on.
The engine cannot be started.
Start/Stop button
General notes
When you insert the Start/Stop button into the
ignition lock, the system needs approximately
two seconds recognition time. You can then use
the Start/Stop button.
Pressing the Start/Stop button several times in
succession corresponds to the different Smart-
Key positions in the ignition lock. This is only the
case if you are not depressing the brake pedal.
If you depress the brake pedal and press the
Start/Stop button, the engine starts immedi-
ately.
A check which periodically establishes a radio
connection between the vehicle and the Smart-
Key determines whether a valid SmartKey is in
the vehicle. This occurs, for example, when
starting the engine.
Driving123
Driving and parking
Z

To start the vehicle without actively using the
SmartKey:
Rthe Start/Stop button must be inserted in the
ignition lock.
Rthe SmartKey must be in the vehicle.
Rthe vehicle must not be locked with the
SmartKey or KEYLESS-GO. (Ypage 77)
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.
If you lock the vehicle with the SmartKey remote control or with KEYLESS-GO, after a short time:
Ryou will not be able to switch on the ignition
with the Start/Stop button.
Ryou will no longer be able to start the engine
with the Start/Stop button until the vehicle is
unlocked again.
If you lock the vehicle centrally using the button
on the front door (
Ypage 82), you can continue
to start the engine with the Start/Stop button.
The engine can be switched off while the vehicle
is in motion by pressing and holding the Start/
Stop button for three seconds. This function
operates independently of the ECO start/stop
automatic engine switch-off function.
Key positions with the Start/Stop button
:Start/Stop button
;Ignition lock
As soon as the ignition is switched on, all the
indicator lamps in the instrument cluster light
up. Warning and indicator lamps: see
(
Ypage 241). If Start/Stop button
:has not yet been
pressed, this corresponds to the SmartKey
being removed from the ignition.
XTo switch on the power supply: press
Start/Stop button :once.
The power supply is switched on. You can now activate the windshield wipers, for example.
The power supply is switched off again if:
Rthe driver's door is opened and
Ryou press Start/Stop button :twice when in
this position
XTo switch on the ignition: press Start/Stop
button :twice.
The ignition is switched on.
The ignition is switched off again if:
Ryou do not start the engine from this position within 15 minutes
Ryou press Start/Stop button :once when in
this position
The power supply is switched off again if:
Rthe driver's door is opened and
Ryou press Start/Stop button :once when in
this position
Removing the Start/Stop button
You can remove the Start/Stop button from the ignition lock and start the vehicle as normal
using the SmartKey.
It is possible to switch between Start/Stop but-
ton mode and key operation only when the
transmission is in position j.
XRemove Start/Stop button :from ignition
lock ;.
You do not have to remove the Start/Stop but-
ton from the ignition lock when you leave the
vehicle. You should, however, always take the
SmartKey with you when leaving the vehicle. As
long as the SmartKey is in the vehicle:
Rthe vehicle can be started using the Start/
Stop button
Rthe electrically powered equipment can be
operated
124Driving
Driving and parking

Kickdown
XFormaximum acceleration ,depress th e
accelerato rpedal beyon dth epressur epoint.
The automatic transmission shift sto alower
gear depending on th eengin espeed.
XShift bac kup once th edesire dspee dis
reached. If you apply full throttle, th
eautomatic trans -
mission shift sup to th enext gear when th e
maximum engin espeed is reached. This pre -
vents th eengin efrom overrevving .
Mercedes-AMG vehicles: kickdown is only
possibl ein th etemporar ysetting .
Problems with the trans mission
ProblemPossible causes/consequences and MSolutions
The transmission has
problemsshifting gear .The transmission is losing oil.
XHaveth etransmission checke dat aqualified specialist workshop
immediately.
The acceleration abilit y
is deteriorating .
The transmission no lon -
ger changes gear .The transmission is in emergenc ymode.
It is possibl eto shift to agear and revers egear only.
XStop th evehicle.
XShift th etransmission to position j.
XSwitchoff th eengine.
XWait at least te nseconds before restarting th eengine.
XShift th etransmission to position hork.
If h is selected, th etransmission only shift sto on egear ;if k is
selected, th etransmission shift sto revers egear .
XHaveth etransmission checke dat aqualified specialist workshop
immediately.
Transfer case
This section is only valid for vehicles wit h4-
whee ldrive (4MATIC). Powe ris always trans -
mitte dto bot haxles.
!Performance test smay only be carrie dout
on a2-axl edynamometer. The brak esystem
or transfer cas ecould otherwise be damaged.
Contac t aqualified specialist workshop for a
performance test .
!Since ESP®engagesautomatically, th eigni-
tion mus tbe switched off (the SmartKey or
Start/Sto pbutto nmus tbe in position gor
1) if
Rtheelectrical parking brak eis bein gtested
usin g adynamometer
Rthevehicl eis bein gtowed wit honly on e
axl eraised (not permitte dfor vehicles wit h
4MATIC) Otherwise
,th ebrak esystem can be dam-
aged .
!Vehicles wit h4MATIC mus tno tbe towed
wit heither th efron tor th erear axl eraised, as
doin gso will damag eth etransmission .
Refueling
Important safety notes
GWARNIN G
Fue lis highly flammable. If you handle fuel
incorrectly, there is aris kof fir eand explo-
sion .
You mus tavoid fire, open flames, creating
sparks and smoking .Switc hoff th eengin e
and ,if applicable, th eauxiliary heating before
refueling.
Refueling141
Driving and parking
Z

Activating the HOLD function
XMakesur ethat th eactivation condition sare
met .
XDepress th ebrak epedal .
XQuickl ydepress th ebrak epedal further
until :appear sin th emultifunction display.
The HOLD function is activated. You can
release th ebrak epedal .
If depressing th ebrak epedal th efirst time does
no tactivat eth eHOLD function ,wait briefl yand
then tr yagain .
Deactivating the HOLD function
The HOLD function is deactivated automatically
if:
Ryou depress th eaccelerato rand th etrans -
mission is in position hork
Rthetransmission is in position j
Ryou depress thebrak epedal again wit h acer-
tai namount of pressur euntil display ë
disappear sfrom th emultifunction display
Ryou secure th evehicl eusin gth eelectric park -
ing brake.
Ryou activat eDISTRONI CPLU S
Afte r atime, th eelectric parking brak esecures
th evehicl eand relieves th eservic ebrake.
When th eHOLD function is activated, th etrans -
mission is shifte dautomatically to position j
if:
Rth edriver's seat belt is no tfastene dand th e
driver's door is open .
Rtheengin eis switched off ,unless it is auto -
matically switched off by th eECO start/sto p
function . The electric parking brak
esecures th evehicl e
automatically if th eHOLD function is activated
when th evehicl eis stationary and :
Rasystem malfunction occurs.
Rth epowe rsupply is insufficient.
If amalfunction occurs, th etransmission may
also be shifte dto position jautomatically.
RACE START
Import ant safety notes
iRACE START mus tno tbe used on normal
roads. RACE START mus tonly be activated
and used on dedicated road circuits, outside
of public road use.
iRACE START is only available for Mercedes-
AM Gvehicles except Mercedes-AM G C43
4MATIC.
RACE START enables optimal acceleration from
a standing start .Fo rthis, asuitably high-grip
road surfac eis require dand th evehicl eand tires
mus tbe in goo dworking order.
GWARNIN G
If you use RACE START ,individual tires may
start to spin and th evehicl ecould skid.
Dependin gon th eselected ES P
®mode, there
is an increased ris kof skiddin gand having an
accident. Mak esur ethat no persons, animals
or obstacles are within range of th evehicle.
iObserv eth esafet ynote son drivin gsafet y
systems (Ypage 64).
Be sur eto read th esafet ynote sand informa-
tion on ES P
®(Ypage 67).
Conditions for activati on
You can activateRACE START if:
Rth edoor sare closed.
Rth eengin eis runnin gand it has reached an
operating temperature of approximately
16 0 ‡ (71 †). This is th ecas ewhen th eoil
temperature gauge in th emultifunction dis-
play is shown in white.
Rth edrive program S,S+ orRace is selected.
(Ypage 130)
Rth esteering whee lis in th estraight-ahead
position .
162Driving systems
Driving and parking

XPressato confirm.
The Reset All Settings?function
appears.
XPress :or9 to select NoorYes.
XPress ato confirm the selection.
If you have selected Yes, the multifunction
display shows a confirmation message.
For safety reasons, the Daytime Running
Lightsfunction in theLightssubmenu is only
reset when the vehicle is stationary.
AMG menu (Mercedes-AMG vehicles)
Warm-up
:Digital speedometer
;Gear indicator
=Charge-air pressure
?Engine oil temperature
ATransmission oil temperature
XPress the òbutton on the steering wheel
to open the menu list.
XPress the :or9 button on the steering
wheel to select the AMGmenu.
XConfirm by pressing aon the steering
wheel.
Engine and transmission oil tempera-
tures: when the engine and transmission are
at normal operating temperature, oil temper-
atures ?and Aare displayed in white in the
multifunction display.
If the multifunction display shows oil temper-
ature ?orA in blue, the engine or the
transmission are not yet at normal operating
temperature. Avoid driving at full engine out-
put during this time.
Traffic Sign Assist display
XSwitch on the display function for notes and
traffic signs (Ypage 204).
XPress the òbutton on the steering wheel
to open the menu list.
XPress the :or9 button on the steering
wheel to select the AMGmenu.
XConfirm by pressing aon the steering
wheel.
XPress the 9button repeatedly until the
Traffic Sign Assist display appears.
G-Meter
While the vehicle is in motion, the G-Meter
shows the forces that are exerted on the driver
both laterally and in the direction of travel.
The maximum values are indicated in red in the
guideline system.
XPress òon the steering wheel to open the
menu list.
XPress the :or9 button on the steering
wheel to select the AMGmenu.
XConfirm by pressing aon the steering
wheel.
XPress the 9button repeatedly until the G-
Meter appears.
208Menus and submenus
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
4
CheckEngineOilAtNextRefueling
The engin eoil level has dropped to th eminimum level.
A warning tone also sounds.
!Avoid lon gjourneys wit hto olittl eengin eoil. The engin ewill oth-
erwise be damaged.
XChec kth eoil level when next refueling, at th elatest (Ypage 283).
XIf necessary, add engin eoil (Ypage 283).
If you have to ad dengin eoil frequently:
XContac t aqualified specialist workshop and hav eth eengin e
checked.
Information on approve dengin eoils can be obtained from aqualified
specialist workshop or on th eInternet at http://bevo.mercedes -
benz.co m.
4
Check Engine OilLevel(Add1quart)(USA)Check EngineOil Level (Add 1Liter)(Canada)
Mercedes-AMG C 63 vehicles:
The engine oil level has dropped to the minimum level.
!Avoid long journeys with too little engine oil. The engine will oth-
erwise be damaged.
XCheck the oil level when next refueling, at the latest (Ypage 283).
XIf necessary, add engine oil (Ypage 283).
If you have to add engine oil frequently:
XContact a qualified specialist workshop and have the engine
checked.
Information on approved engine oils can be obtained from a qualified
specialist workshop or on the Internet at http://bevo.mercedes-
benz.com.
4
Engine Oil LevelLow Stop VehicleTurn Engine Off
Mercedes-AMG C 63 vehicles:
The engine oil level is too low. There is a risk of engine damage.
XPull over and stop the vehicle safely and switch off the engine, pay-
ing attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 143).
XCheck the engine oil level (Ypage 283).
XIf necessary, add engine oil (Ypage 283).
8
Fuel Level Low
The fuel level has dropped into the reserve range.
XRefuel at the nearest gas station.
Display messages227
On-board computer and displays
Z