2018 MERCEDES-BENZ C CLASS coolant level

Coolingwit h air dehumidif ication
(multimedia system) ...................... 276
Defrosting the windows ................ .129
Defrosting the windshield .............. 129
ECO start/stop function ................ 126
General notes ................................ 124
Indicator lamp ................................ 127
Ionization ....................................... 133
Ionization (multimedia system) ...... 275
Notes on using the automatic cli-
mate control .................................. 126
Overview ........................................ 274
Overview of systems ......................1 24
Perfume atomizer .......................... 131
Perfume atomizer (multimedia
system) .......................................... 275
Pre-entry climate control (via key)
(multimedia system) ......................2 75
Pre-entry climate control at
departure time (multimedia sys-
tem) ............................................... 275
Problem with the rear window
defroster ........................................ 130
Problems with cooling with air
dehumidification ............................ 127
Rear control panel ......................... 125
Refrigerant ..................................... 367
Refrigerant filling capacity ............. 367
Setting the air distribution ............. 128
Setting the air vents ......................1 33
Setting the airflow ......................... 128
Setting the climate mode ...............1 27
Setting the climate mode (multi-
media system) ............................... 275
Setting the temperature ................ 128
Switching air-recirculation mode
on/off ............................................ 130
Switching on/off ........................... 126
Switching residual heat on/off ...... 131
Switching the rear window
defroster on/off ............................ 130
Switching the synchronization
function on and off ........................ 129
Synchronization function (multi-
media system) ..................... .......... 276
C

limate control settings
Multimedia system ........................ 274 Climate control system
Climate control .............................. 126
Cockpit
Overview .......................................... 36
Code for Apps
see QR code
COMAND display
Cleaning ......................................... 313
Combination switch .......................... 114
Connecting a USB device
see also Digital Operator's Man-
ual ..................................................2 70
Consumption statistics (on-board
computer) .......................................... 215
Controller ...........................................2 71
Controlling the speed
see Distance Pilot DISTRONIC
Convenience box ............................... 286
Convenience closing feature .............. 92
Convenience opening feature ............ 92
Coolant (engine)
Checking the level ......................... 306
Display message ............................ 243
Filling capacity ............................... 366
Important safety notes .................. 365
Temperature display in the instru-
ment cluster .................................. 211
Warning lamp ................................. 265
Cooling
see Climate control
Copyright ............................................. 35
Cornering light function
Display message ............................ 242
Function/notes .............................1 15
Cover
see Roller sunblind
Crosswind Assist ................................. 72
Cruise control
Cruise control lever ....................... 170
Deactivating ................................... 171
Display message ............................ 251
Driving system ............................... 169
Function/notes .............................1 69
General notes ................................ 169
Important safety notes .................. 169
Setting a speed .............................. 170
8Index

Vehicle data ................................... 367
Vehicle battery
see Battery (vehicle)
Vehicle data
Roof load (maximum) .....................3 67
Vehicle dimensions ........................... 367
Vehicle emergency locking ................ 85
Vehicle identification number
see VIN
Vehicle identification plate .............. 360
Vehicle level
AIRMATIC ...................................... 182
Display message ............................ 247
Video
Operating the DVD ......................... 219
see also Digital Operator's Man-
ual ..................................................2 70
VIN
Seat ............................................... 361
Type plate ...................................... 360
W
Warning and indicator lampsABS ................................................ 261
Active Brake Assist ........................ 267
Airbag ............................................ 264
Brakes ...........................................2 60
Coolant .......................................... 265
Distance warning ........................... 267
Engine diagnostics ......................... 265
ESP
®.............................................. 261
ESP®OFF ....................................... 263
Fuel tank ........................................ 265
General notes ................................ 258
Overview .......................................... 37
Parking brake ................................ 264
PASSENGER AIR BAG ......................4 5
Reserv efuel .................................. .265
Restraint system ............................ 264
Seat belt ........................................ 259
SPORT handling mode ................... 263
Steering ......................................... 269
Tire pressure monitor .................... 268
Warranty .............................................. 29
Washer fluid
Display message ............................ 257 Weather display (COMAND)
see also Digital Operator's Man-
ual .................................................. 270
Wheel and tire combinations
Tires ............................................... 357
Wheel bolt tightening torque ........... 357
Wheel chock ...................................... 353
Wheels
Changing a wheel .......................... 352
Checking ........................................ 334
Cleaning ......................................... 311
Important safety notes .................. 333
Information on driving .................... 333
Interchanging/changing ................ 352
Mounting a new wheel ................... 356
Mounting a wheel .......................... 353
Removing a wheel .......................... 356
Snow chains .................................. 336
Storing ........................................... 353
Tightening torque ........................... 357
Wheel size/tire size ....................... 357
Window curtain air bag
Display message ............................ 239
Operation ......................................... 51
Windows
see Side windows
Windshield
Defrosting ...................................... 129
Win dshie
ld washer fluid
see Windshield washer system
Windshield washer system
Adding washer fluid ....................... 307
Important safety notes .................. 366
Windshield wipers
Problem (malfunction) ................... 123
Replacing the wiper blades ............ 121
Switching on/off ........................... 120
Winter driving
Important safety notes .................. 335
Slippery road surfaces ................... 169
Snow chains .................................. 336
Winter operation
Radiator cover ............................... 304
Summer tires ................................. 335
Winter tires
M+S tires ....................................... 335
Wiper arm
Moving to a vertical position .......... 121
Index25

ProblemPossible causes/consequences andMSolutions
Vehicles with a gasoline
engine:
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 306). 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 150).
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 138).
144DYNAMIC 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 212).
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 37).
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 doperation211
On-boa rd computer and displays
Z

Engine
Display messagesPossible causes/consequences andMSolutions
+
CheckCoolantLevelSee Operator's Man‐ual
The coolant level is too low.
!Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
XAdd coolant, observing the warning notes before doing so
(Ypage 306).
If you have to add coolant frequently:
XContact a qualified specialist workshop and have the engine cooling
system checked.
?The fan motor is malfunctioning.
XIf the coolant temperature is below the red marking in the coolant
temperature gauge, drive to the nearest qualified specialist work-
shop.
XAvoid heavy loads on the engine as you do so, e.g. driving in moun-
tainous terrain and stop-and-go traffic.
?
Coolant Too HotStop Vehicle TurnEngine Off
The coolant is too hot.
A warning tone also sounds.
GWARNING
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.
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 161).
XWait until the engine has cooled down.
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 display message goes out and
the coolant temperature gauge is below the red marking. Other-
wise, the engine could be damaged.
XPay attention to the coolant temperature gauge.
If the temperature increases again:
XVisit a qualified specialist workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature gauge may rise to the red marking.
Display messages243
On-board computer and displays
Z

Engine
Warning/
indicator
lampNSignal type
Possible causes/consequences and M
Solutions
;NThe yellow Check Engine warning lamp lights up while the engine is running.
There may be a malfunction, for example:
Rin the engine management
Rin the fuel injection system
Rin the exhaust system
Rin the ignition system (for vehicles with gasoline engines)
Rin the fuel system
The emission limit values may be exceeded and the engine may be in emergency
mode.
XVisit a qualified specialist workshop immediately.
In some states, you must immediately visit a qualified specialist workshop as soon as the yellow Check Engine warning lamp lights up. This is due to the legal require-
ments in effect in these states. If in doubt, check whether such legal regulations
apply in the state in which you are currently driving.
Vehicles with a diesel engine: the fuel tank has been run dry (
Ypage 158).
XStart the engine three to four times after refueling.
If the yellow Check Engine warning lamp goes out, emergency running mode is
canceled. The vehicle need not be checked.
8N The yellow reserve fuel warning lamp lights up while the engine is running.
The fuel level has dropped into the reserve range.
XRefuel at the nearest gas station.
8N The yellow reserve fuel warning lamp flashes while the vehicle is in motion.
In addition, the ;Check Engine warning lamp may light up.
The fuel filler cap is not closed correctly or the fuel system is leaking.
XCheck that the fuel filler cap is correctly closed.
XIf the fuel filler cap is not correctly closed: close the fuel filler cap.
XIf the fuel filler cap is closed:visit a qualified specialist workshop.
?NThe red coolant warning lamp lights up while the engine is running and the
coolant temperature gauge is at the start of the scale.
The temperature sensor for the coolant temperature gauge is malfunctioning.
The coolant temperature is no longer being monitored. There is a risk of engine
damage if the coolant temperature is too high.
XPull over and stop the vehicle safely and switch off the engine, paying attention
to road and traffic conditions. Do not continue driving under any circumstances.
XSecure the vehicle against rolling away (Ypage 161).
XConsult a qualified specialist workshop.
Warning and indicator lamps in the instrument cluster265
On-board computer and displays
Z

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 161).
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 306).
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 161).
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 306).
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.
266Warning 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 136).
or
XPress th eStart/Sto pbutto ntwice on vehicles
wit hKEYLESS-GO or th eKEYLESS-GO start
function (
Ypage 137).
XCheckth ecoolan ttemperature display in th e
instrumen tcluste r (Ypage 37).
The coolan ttemperature mus tbe belo w
15 8 ‡ (70 †).
XTurn th eSmartKey to position gin th eigni-
tion loc k (Ypage 136).
or
XPress th eStart/Sto pbutto nonce on vehicles
wit hKEYLESS-GO or th eKEYLESS-GO start
function (
Ypage 137).
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;.
306Engine compartment
Maintenance and care