coolant level MERCEDES-BENZ C-CLASS COUPE 2018 Owner's Manual

Perfume atomizer (multimedia
system) .......................................... 261
Problem with the rear window
defroster ........................................121
Problems with cooling with air
dehumidification ............................ 119
Refrigerant ..................................... 348
Refrigerant filling capacity ............. 349
Setting the air distribution ............. 120
Setting the air vents ......................1 23
Setting the airflow ......................... 120
Setting the climate mode (multi-
media system) ............................... 261
Setting the temperature ................ 119
Switching air-recirculation mode
on/off ............................................ 121
Switching on/off ........................... 118
Switching the rear window
defroster on/off ............................ 121
Switching the synchronization
function on and off ........................ 120
Synchronization function (multi-
media system) ............................... 261
Climate control settings
Multimedia system ........................ 260
Climate control system
Climate control .............................. 118
Cockpit
Overview .......................................... 35
Code for Apps
see QR code
COMAND display
Cleaning ......................................... 296
Combination switch .......................... 109
Connecting a USB device
see also Digital Operator's Man-
ual ..................................................2 56
Consumption statistics (on-board
computer) .......................................... 201
Controller ...........................................2 57
Controlling the speed
see Distance Pilot DISTRONIC
Convenience closing feature .............. 89
Convenience opening feature ............ 88
Coolant (engine)
Checking the level ......................... 289
Display message ............................ 229 Filling capacity ............................... 348
Important
safety notes .................. 347
Tempera

ture display in the instru-
ment cluster .................................. 197
Warning lamp ................................. 251
Cooling
see Climate control
Copyright ............................................. 34
Cornering light function
Display message ............................ 228
Function/notes .............................1 10
Cover
see Roller sunblind
Crosswind Assist ................................. 70
Cruise control
Cruise control lever ....................... 156
Deactivating ................................... 157
Display message ............................ 237
Driving system ............................... 155
Function/notes .............................1 55
General notes ................................ 155
Important safety notes .................. 155
Setting a speed .............................. 156
Storing and maintaining current
speed ............................................. 156
Storing the current speed or call-
ing up the last stored speed .......... 156
Cup holder
Center console .............................. 273
Important safety notes .................. 272
Customer Assistance Center
(CAC) ..................................................... 31
Customer Relations Department ....... 31
D
Dashboard
see Instrument cluster
Dashboard lighting
see Instrument cluster lighting
Data
see Technical data
Data carrier
Selecting ........................................ 205
Daytime running lamp mode
see Daytime running lamps
Daytime running lamps
Display message ............................ 228
8Index

Individual settings .......................... 207
Limited Warranty .............................32
Loading .......................................... 326
Locking (in an emergency) ............... 82
Locking (SmartKey) .......................... 75
Lowering ........................................ 340
Maintenance .................................... 29
Operating safety .............................. 30
Operation outside the USA/
Canada ............................................ 29
Parking .......................................... 147
Parking for a long period ................ 150
Pulling away ................................... 129
Raising ........................................... 337
Reporting problems ......................... 31
Securing from rolling away ............ 336
Technical data ............................... 342
Towing away .................................. 310
Transporting .................................. 312
Unlocking (in an emergency) ........... 82
Unlocking (SmartKey) ...................... 75
Vehicle data ................................... 349
Vehicle battery
see Battery (vehicle)
Vehicle data
Roof load (maximum) ..................... 349
Vehicle dimensions ........................... 349
Vehicle emergency locking ................ 82
Vehicle identification number
see VIN
Vehicle identification plate .............. 343
Vehicle level
AIRMATIC ...................................... 168
Display message ............................ 233
Video
Operating the DVD ......................... 205
see also Digital Operator's Man-
ual .................................................. 256
VIN
Seat ............................................... 344
Type plate ...................................... 343
W
Warning and indicator lampsABS ................................................ 247
Active Brake Assist ........................ 253
Airbag ............................................ 250 Brakes ........................................... 246
Coolant .......................................... 251
Distance warning ........................... 253
Engine diagnostics ......................... 250
ESP
®.............................................. 247
ESP®OFF ....................................... 249
Fuel tank ........................................ 250
General notes ................................ 244
Overview .......................................... 36
Parking brake ................................ 250
PASSENGER AIR BAG ...................... 44
Reserve fuel ................................... 250
Restraint system ............................ 250
Seat belt ........................................ 245
SPORT handling mode ................... 249
Steering ......................................... 255
Tire pressure monitor .................... 254
Warranty .............................................. 28
Washer fluid
Display message ............................ 243
Weather display (COMAND)
see also Digital Operator's Man-
ual .................................................. 256
Wheel and tire combinations
Tires ............................................... 340
Wheel bolt tightening torque ........... 340
Wheel chock ...................................... 336
Wheels
Changing a wheel .......................... 335
Checking ........................................ 317
Cleaning ......................................... 294
Important safety notes .................. 316
Information on driving .................... 316
Interchanging/changing ................ 335
Mounting a new wheel ................... 339
Mounting a wheel .......................... 336
Removing a wheel .......................... 339
Snow chains .................................. 319
Storing ........................................... 336
Tightening torque ........................... 340
Wheel size/tire size ....................... 340
Window curtain air bag
Display message ............................ 225
Operation ......................................... 51
Windows
see Side windows
24Index

ProblemPossible causes/consequences andMSolutions
The engine is not running
smoothly and is misfir-
ing.There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
XOnly depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it.
XHave the cause rectified immediately at a qualified specialist work-
shop.
The coolant temperature
display is pointing to the
red mark.The coolant level is too low. The coolant is too hot and the engine is no
longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant to
cool down.
XCheck the coolant level (Ypage 289). Observe the warning notes
as you do so and add coolant if necessary.
DYNAMIC SELECT switch
Mercedes-AMG vehicles
General information
Use the DYNAMIC SELECT switch to select the
drive program.
Available drive programs for Mercedes-
AMG C 43 4MATIC:
S+ Sport PlusParticularly sporty driving
characteristics
SSportSporty driving characteris-
tics
C ComfortComfortable and economi-
cal driving characteristics
EEconomyParticularly economical
driving characteristics
IIndividualIndividual settings
Available drive programs for Mercedes-
AMG C 63/C 63 S:
RACE
(S‑MODEL)Driving characteristics suit-
able for a race circuit
S+ Sport PlusParticularly sporty driving
characteristics
SSportSporty driving characteris-
tics
C ComfortComfortable and economi-
cal driving characteristics
IIndividualIndividual settings
Depending on the drive program selected the
following vehicle characteristics will change:
Rthe drive (engine and transmission manage-
ment)
Rthe suspension
Rthe steering
Rthe driver assistance systems
RESP®(Mercedes-AMG C 63/C 63 S)
Rthe position of the exhaust flap (Mercedes-
AMG C 63/C 63 S)
Rthe setting of the ECO start/stop function
Rthe availability of gliding mode
Rthe climate control:
Further information for automatic drive program
characteristics (
Ypage 140).
Additionally, in drive program Iyou can config-
ure the respective vehicle characteristics using
the multimedia system. You can find informa-
tion about this under "DYNAMIC SELECT" in the
vehicle's Digital Operator's Manual.
Each time you start the engine with the Smart-
Key or the Start/Stop button, drive program Cis
activated. For further information about starting
the engine, see (
Ypage 128).
134DYNAMIC SELECT switch
Driving and parking

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 198).
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 doperation197
On-boa rd computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
Adaptive HighbeamAssist CurrentlyUnavailable SeeOperator'sManual
Adaptive Highbea mAssis tis deactivated and temporarily inoperative.
Possibl ecauses are:
RThe windshield in th ecamera' sfield of vision is dirty
RVisibilit yis impaire ddue to heav yrain ,snow or fog
XClean th ewindshield.
If th esystem detects that th ecamera is full yoperational again ,th e
Adaptive
HighbeamAssistNowAvailablemessage is displayed.
Adaptive Highbea mAssis tis operational again .
Adaptive HighbeamAssist InoperativeAdaptive HighbeamAssis tis malfunctioning .
XVisitaqualified specialist workshop .
Engine
Display messagesPossible causes/consequences and MSolutions
+
CheckCoolantLevelSee Operator' sMan ‐ual
The coolan tlevel is to olow.
!Avoid making lon gjourneys wit hto olittl ecoolan tin th eengin e
coolin gsystem. The engin ewill otherwise be damaged.
XAd dcoolant, observing th ewarning note sbefore doin gso
(Ypage 289).
If you have to ad dcoolant frequently:
XContac t aqualified specialist workshop and hav eth eengin ecoolin g
system checked.
?The fan motor is malfunctioning .
XIf thecoolan ttemperature is belo wthered marking in th ecoolan t
temperature gauge ,drive to th eneares tqualified specialist work-
shop.
XAvoid heav yloads on th eengin eas you do so, e.g. drivin gin moun -
tainous terrain and stop-and-g otraffic.
Display messages22 9
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
?
CoolantToo HotSto pVehicl eTur nEngine Off
The coolan tis to ohot .
A warning tone also sounds.
GWARNIN G
Do no tdrive when your engin eis overheated. This can caus esom e
fluids whic hmay hav eleaked int oth eengin ecompartmen tto catch
fire.
Steam from th eoverheate dengin ecan also caus eserious burn swhic h
can occur jus tby opening th ehood.
There is aris kof injury.
XPull ove rand stop th evehicl esafely and switch off th eengine, pay-
ing attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 147).
XWait until th eengin ehas cooled down .
XMakesur ethat th eair supply to th eengin eradiato ris no tblocked,
e.g. by snow, slus hor ice .
XDo no tstart th eengin eagain until th edisplay message goe sout and
th ecoolan ttemperature gauge is belo wthered marking .Other -
wise ,th eengin ecould be damaged.
XPay attention to th ecoolan ttemperature gauge .
If th etemperatur eincreases again:
XVisit aqualified specialist workshop immediately.
Under normal operating condition sand wit hth especified coolan t
level, th ecoolan ttemperature gauge may ris eto th ered marking .
#
See Operator' sMan ‐ual
The battery is no tbein gcharged.
A warning tone also sounds.
Possibl ecauses are:
Radefective alternato r
Ratorn poly-V-belt
Ramalfunction in th eelectronics
!Do no tcontinu edriving. The engin ecould otherwise overheat.
XPull ove rand stop th evehicl esafely and switch off th eengine, pay-
ing attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 147).
XConsult aqualified specialist workshop .
230Display messages
On-board computer and displays

Warning/
indicator
lampNSignal type
Possible causes/consequences and M
Solutions
?NThe red coolant warning lamp comes on while the engine is running.
The coolant level is too low.
If the coolant level is correct, the airflow to the engine radiator may be blocked or
the electric engine radiator fan may be defective.
The coolant is too hot and the engine is no longer being cooled sufficiently.
XObserve the additional display messages in the multifunction display.
XPull over and stop the vehicle safely and switch off the engine, paying attention
to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 147).
XLeave the vehicle and keep a safe distance from the vehicle until the engine has cooled down.
XCheck the coolant level and add coolant, observing the warning notes
(Ypage 289).
XIf you have to add coolant frequently, have the engine cooling system checked.
XMake sure that the air supply to the engine radiator is not blocked, e.g. by snow,
slush or ice.
XDo not start the engine again until the coolant temperature gauge is below the
red marking. Otherwise, the engine could be damaged.
XDrive to the nearest qualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in mountainous terrain
and stop-and-go traffic.
?N The red coolant warning lamp comes on while the engine is running. A warning
tone also sounds.
The coolant temperature gauge has reached the red marking. The airflow to the
engine radiator may be blocked or the coolant level may be too low.
GWARNING
The engine is not being cooled sufficiently and may be damaged.
Do not drive when your engine is overheated. This can cause some fluids which
may have leaked into the engine compartment to catch fire.
Steam from the overheated engine can also cause serious burns which can occur
just by opening the hood.
There is a risk of injury.
XObserve the additional display messages in the multifunction display.
XPull over and stop the vehicle safely and switch off the engine, paying attention
to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 147).
XLeave the vehicle and keep a safe distance from the vehicle until the engine has
cooled down.
XCheck the coolant level and add coolant, observing the warning notes
(Ypage 289).
XIf you have to add coolant frequently, have the engine cooling system checked.
XMake sure that the air supply to the engine radiator is not blocked, e.g. by snow,
slush or ice.
252Warning and indicator lamps in the instrument cluster
On-board computer and displays

Additional service products
Import ant safety notes
GWARNIN G
Certain component sin th eengin ecompart-
ment, suc has th eengine, radiato rand part s
of th eexhaust system, can become ver yhot .
Working in th eengin ecompartmen tposes a
ris kof injury.
Wher epossible, let th eengin ecool down and
touch only th ecomponent sdescribed in th e
following.
GWARNIN G
The engin ecompartmen tcontain smoving
components. Certain components, suc has
th eradiato rfan ,may continu eto run or start
again suddenly when th eignition is off .There
is aris kof injury.
If you need to do any wor kinside th eengin e
compartment:
Rswitch off th eignition
Rnever reac hint oth earea wher ethere is a
ris kof danger from moving components,
suc has th efan rotation area
Rremove jewelr yand watches
Rkeep items of clothing and hair ,for exam-
ple, away from moving part s
GWARNING
The coolin gsystem is pressurized, particularly
when th emotor is warm .If you open th ecap ,
you could be scalded if hot coolan tsprays out .
There is aris kof injury.
Let th eengin ecool down before you open th e
cap .Wear gloves and eye protection .Slowly
open th ecap to reliev epressure.
GWARNIN G
Opening th ehoo dwhen th eengin eis over-
heated or when there is afir ein th eengin e
compartmen tcould expos eyou to hot gase s
or other servic eproducts .There is aris kof
injury.
Let an overheate dengin ecool down before
opening th ehood. If there is afir ein th e
engin ecompartment, keep th ehoo dclosed
and contact th efir edepartment.
Checking coolant level
Checking th ecoolan tlevel (example)
XPark th evehicl eon alevel surface.
Only chec kth ecoolan tlevel when th evehicl e
is on alevel surfac eand th eengin ehas cooled
down .
XTurn th eSmartKey to position 2in th eigni-
tion loc k (Ypage 126).
or
XPress th eStart/Sto pbutto ntwice on vehicles
wit hKEYLESS-GO or th eKEYLESS-GO start
function (
Ypage 127).
XCheckth ecoolan ttemperature display in th e
instrumen tcluste r (Ypage 36).
The coolan ttemperature mus tbe belo w
15 8 ‡ (70 †).
XTurn th eSmartKey to position gin th eigni-
tion loc k (Ypage 126).
or
XPress th eStart/Sto pbutto nonce on vehicles
wit hKEYLESS-GO or th eKEYLESS-GO start
function (
Ypage 127).
XSlowly tur ncap :half atur ncounter-clock -
wise and allow excess pressur eto escape.
XTurn cap :further counter-clockwise and
remove it .
If th ecoolan tis at th elevel of marke rbar =
in th efiller neck when cold, there is enough
coolan tin coolan texpansion tan k;.
If th ecoolan tlevel is approximately 0. 6in
(1. 5cm) abov emarke rbar =in th efiller neck
when warm ,there is enough coolan tin expan -
sion tan k;.
Engine compartment289
Maintenance and care
Z

XIf necessary, add coolant that has been tested
and approved by Mercedes-Benz.
XReplace cap:and turn it clockwise as far as
it will go.
For further information on coolant, see
(
Ypage 347).
Adding washer fluid to the windshield
washer system
GWARNING
Windshield washer concentrate could ignite if it comes into contact with hot engine compo-
nents or the exhaust system. There is a risk of
fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the filler neck.
Example: adding liquid to the windshield
washer system
XTo open: pull cap:upwards by the tab and
open.
XAdd the premixed washer fluid.
XTo close: press cap :onto the filler neck
until it engages.
If the washer fluid level drops below the recom-
mended minimum fluid level of 1.1 US qt (1.0 l),
a message appears in the multifunction display
prompting you to add washer fluid (
Ypage 243).
Further information on washer fluid
(
Ypage 348).
ASSYST PLUS
Service message
The ASSYST PLUS service interval display
informs you of the next service due date. Information on the type of service and service
intervals (see the separate Maintenance Book-
let).
Further information can be obtained at a quali-
fied specialist workshop, e.g. an authorized
Mercedes-Benz Center, or at
http://www.mbusa.com (USA only).
iThe ASSYST PLUS service interval display
does not show any information on the engine
oil level. Observe the notes on the engine oil
level (
Ypage 287).
The multifunction display shows a service mes-
sage for several seconds, e.g.:
RService A in XX Days
RService A Due
RService A Overdue by XX Days
Depending on the operating conditions of the
vehicle, the remaining time or distance until the
next service due date is displayed.
The letter A
orB, possibly in connection with a
number or another letter, indicates the type of
service. A
stands for a minor service and Bfor a
major service.
You can obtain further information from an
authorized Mercedes-Benz Center.
The ASSYST PLUS service interval display does
not take into account any periods of time during
which the battery is disconnected.
Maintaining the time-dependent service sched-
ule:
XNote down the service due date displayed in
the multifunction display before disconnect-
ing the battery.
or
XAfter reconnecting the battery, subtract the
battery disconnection periods from the ser-
vice date shown on the display.
Hiding a service message
XPress the aor% button on the steering
wheel.
Displaying service messages
XSwitch on the ignition.
XUse ò on the steering wheel to call up the
list of menus.
290ASSYST PLUS
Maintenance and care

iThe data shown on the vehicle identification
plate is used only as an example. This data is
different for every vehicle and can deviate
from the data shown here. You can find the
data applicable to your vehicle on the vehicle
identification plate.
Vehicle identification number (VIN)
XSlide the right-hand front seat to its rearmost
position.
XFold floor covering ;upwards.
The VIN is visible :.
The VIN can also be found on the vehicle iden-
tification plate (
Ypage 343).
The VIN can also be found at the lower edge of
the windshield (
Ypage 344).
Engine number
:Engine number (stamped into the crank-
case)
;VIN (on the lower edge of the windshield)
=Emission control information plate, includ-
ing the certification of both federal and Cali-
fornian emissions standards
Service products and filling capaci-
ties
Important safety notes
GWARNING
Service products may be poisonous and haz-
ardous to health. There is a risk of injury.
Comply with instructions on the use, storage
and disposal of service products on the labels
of the respective original containers. Always
store service products sealed in their original
containers. Always keep service products out
of the reach of children.
HEnvironmental note
Dispose of service products in an environ-
mentally responsible manner.
Service products include the following:
RFuels
RLubricants (e.g. engine oil, transmission oil)
RCoolant
RBrake fluid
RWindshield washer fluid
RClimate control system refrigerant
Components and service products must match.
Only use products recommended by Mercedes-
Benz. Damage which is caused by the use of
products which have not been recommended is
not covered by the Mercedes-Benz warranty or
goodwill gestures. Products approved by
Mercedes-Benz are listed in this Operator's
Manual in the appropriate section.
Information on tested and approved products
can be obtained at a Mercedes-Benz Service
Center or on the Internet at
http://bevo.mercedes-benz.com.
You can recognize service products approved by
Mercedes-Benz by the following inscription on
the containers:
RMB-Freigabe (e.g. MB-Freigabe 229.51)
RMB-Approval (e.g. MB-Approval 229.51)
Other designations or recommendations indi-
cate a level of quality or a specification in
accordance with an MB Sheet Number (e.g. MB 229.5). They have not necessarily been
approved by Mercedes-Benz.
344Service products and filling capacities
Technical data