2015 MERCEDES-BENZ C-CLASS COUPE radiator

Glove compartment
..........................309
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See also Digita lOwner' sManual ... 296 H
HANDS-FRE EACCESS .......................... 91
Handwriting recognition
Switching text reader function
on/off ............................................ 298
Touchpa d....................................... 298
Hazard warning lamps ......................120
Head restraint
General notes ................................ 105
Head restraints
Adjusting (electrically). .................. 106
Adjusting (manually). .....................105
Adjusting (rear) .............................. 106
Adjusting the fore-and-aft posi-
tion manually ................................. 105
Fitting/removing (rear) .................. 106
Important safety notes .................. 105
Head-up display
Adjusting the brightness ................ 247
Displaysa nd operating .................. 235
Function/notes ............................ .235
Important safety notes .................. 235
Selecting displays .......................... 246
Setting the position ....................... 247
Storing settings (memory func-
tion) ............................................... 116
Headlamp
Cleaning system (notes) ................ 377
Headlamp flasher .............................. 120
Headlamps
Misting up ...................................... 122
see Automatic headlamp mode
Heating
see Climate control
High-pressure cleaners .................... 328
Hill start assist .................................. 149
HOLD function
Activating ....................................... 193
Activatio nconditions ..................... 193
Deactivating ................................... 193
Display message ............................ 273
Function/notes ............................ .192
General notes ................................ 192 Home address
See also Digita lOwner' sManual ... 296
Horn ...................................................... 30
HUD
see Head-up display I
Ignitio nlock
see Key positions
Immobiliser .......................................... 77
Indicator and warning lamp
Restraint system ............................ 290
Indicator and warning lamps
COLLISION PREVENTION ASSIST
PLUS .............................................. 293
Coolant .......................................... 291
Engine diagnostics ......................... 290
SPORT handling mode ................... 289
Indicator lamps
Display message ............................ 265
see Warning and indicator lamps
Indicators
see Turn signals
Insectp rotection on the radiator .... 322
Instrument cluster
Overview .......................................... 32
Warning and indicator lamps ........... 32
Instrument cluster lighting .............. 232
Intelligen tLight System
Activating/deactivating ................. 247
Display message ............................ 265
Overview ........................................ 121
Setting the dipped-bea mhead-
lamps for driving on the right/left .. 247
Interior lighting
Control .......................................... .123
Overview ........................................ 123
Reading lamp ................................. 123
Interior motio nsensor
Deactivating ..................................... 79
Function .......................................... .79
Priming ............................................ 79
Switching off .................................... 79
iPod ®
See also Digital Owner's Manual ... 296
ISOFIX child seat securing system ....5712
Index

Overview .......................................... 32
Parking brake ................................ 290
PASSENGER AIR BAG ......................40
Reserv efuel .................................. .290
Seat bel t........................................ 285
Steering ......................................... 295
Tyr ep ressure monitor ................... 294
Warning triangle ................................ 335
Washer fluid
Display message ............................ 283
Whee land tyre combinations
Tyres .............................................. 366
Whee lboltt ightening torque ........... 365
Whee lchock ...................................... 362
Wheels
Changing awheel .......................... 361
Changing/replacing ....................... 361
Checking ........................................ 354
Cleaning ......................................... 329
Emergency spare wheel ................. 367
Fitting anew wheel ........................ 365
Fitting awheel ............................... 362
Important safety notes .................. 353
Information on driving .................... 353
Removing awheel .......................... 364
Snow chains .................................. 356
Storing .......................................... .361
Tightening torqu e........................... 365
Whee lsize/tyre size ..................... .366
Windowbag
Display message ............................ 262
Operation ......................................... 47
Windows
Cleaning ......................................... 329
see Side windows
Windscreen
Demisting ...................................... 133
Windscreen washe rfluid
see Windscreen washer system
Windscreen washe rsystem
Important safety notes .................. 377
Topping up ..................................... 325
Windscreen wipers
Problem (malfunction) ................... 128
Replacing the wiper blades ............ 126
Switching on/off ........................... 125
Winte roperation
Important safety notes .................. 355 Radiator cover ............................... 322
Slippery road surfaces ................... 179
Snow chains .................................. 356
Summer tyres ................................ 355
Winte rtyres
Limiting the spee d(on-board com-
puter) ............................................. 248
M+S tyres ...................................... 355
Wiper blades
Cleaning ......................................... 329
Important safety notes .................. 126
Replacing ....................................... 126
Replacing (windscreen) .................. 126
Wooden trim (cleaning instruc-
tions) ................................................. .332
Workshop
see Qualified specialist workshop Index
23

Problem
Possible causes/consequences and
M
MSolutions The coolant temperature
display is showing more
than 120 †. Adisplay
message may also
appear in the multifunc-
tion display and awarn-
ing tone may sound. The coolant level is too low. The coolant is too hot and the engine is no
longer being cooled sufficiently.
X Stop as soon as possible and allow the engine and the coolant to
cool down.
X Check the coolant level (Y page 324). Observe the warning notes
as you do so and top up the coolant if necessary. If the coolant level is correct,t
he engine radiator fan may be faulty. The
coolant is too hot and the engine is no longer being cooled sufficiently.
X If the coolant temperature is below 120 †, you can continue driving
to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in moun-
tainous terrain and stop-start traffic. DYNAMIC SELECTs
witchAll vehicles(
except Mercedes-AMG
vehicles)
Use the DYNAMIC SELECT switch to change the
drive program. Depending on the drive program
selected, the following vehicle characteristics
will change:
R the drive (engine and transmission manage-
ment)
R the suspension
R the steering
R the availability of the ECO start/stop function
R the climate control
- the climate control settings
- the rear window heating operation period
- the performance of the seat heating
If the ignition is switched off for less than four
hours, the previously selected drive program is
activated when the engine is next started. If the ignition is switched off for more than four hours,
drive program Cis activated when the engine is
next started. :
DYNAMIC SELECT switch (example)
X Push DYNAMIC SELECT switch :forward or
back until the desired drive program is selec- ted.
The status icon of the selected drive program
is shown in the multifunction display.
In addition, the current drive program settings are displayed briefly in the display of the mul-
timedia system.
i In
af ew countries, the ECO start/stop func-
tion is deactivated at the factory due to the
quality of the available fuel. In this case, the
ECO start/stop function is not available in any
drive program, regardless of the display in the
multimedia system display.
Available drive programs: I
Individual Individual settings
S+
Sport Plus Particularly sporty driving
characteristics S
Sport Sporty driving characteris-
tics154
DYNAMIC SELECT switchDriving and parking

R
you hav eswitched on th eturns ignals. In this
case, th ewarnings are suppressed for acer-
tai np eriod of time.
R ad rivin gsafet ysystem intervenes, suc has
ABS, BA SorESP®
.
Adaptive
When Adaptive Adaptive is selected, no warnin gvibra-
tion occur sif:
R you hav eswitched on th eturns ignals. In this
case, th ewarnings are suppressed for acer-
tai np eriod of time.
R ad rivin gsafet ysystem intervenes, suc has
ABS, BA SorESP®
.
R you accelerate hard, e.g. kickdown.
R you brak ehard.
R you steer actively, e.g. swerve to avoid an
obstacle or chang elan eq uickly.
R you cut th ecorner onashar pbend.
In order that you are warned only when neces-
sar yand in goo dtimeify ou cross th elan em ark-
ing, th esystem detects certain condition sand
warn syou accordingly.
The warnin gvibration occur searlier if:
R you approac hthe outer lan emarking on a
bend
R ther oadh as ver ywide lanes, e.g. amotorway
R thes ystem detects soli dlanem arkings
The warnin gvibration occur slater if:
R ther oadh as narrow lanes
R you cut th ecorner onabend Driving Assistance Plu
spackage
Genera lnotes The Drivin
gAssistance PLU Spackag econsists
of DISTRONI CPLUS(Ypage 184), Active Blind
Spot Assis t(Y page 221) and Active Lan eKeep-
in gA ssist( Ypage 223).
Active Blind Spot Assist Genera
lnotes
Active Blind Spot Assis tmonitors th earea son
either side of th evehicl ethata re no tvisible to
th ed river wit htwo lateral ,rear-facing rada rsen-
sors. Awarnin gdisplay in th eexter iorm irrors
draw syour attention to vehicles detecte dinthe
monitore darea .Ify ou then switch on th ecor- respondin
gturns ignal to chang elanes, you will
also receiv eavisual and audibl ecollision warn-
ing. If ariskofs ide impact is detected, correc-
tive brakin gmay help you avoid acollision.
Active Blind Spot Assis tevaluates th efree
spac eint hedirection of travel and to th eside
before makin gacourse-correcting brak eappli-
cation .For this, Active Blind Spot Assis tuses
th ef orward-facing rada rsensors.
Active Blind Spot Assis tsupport syou from a
speed of approximately 30 km/h.
Important safety notes Active Blind Spot Assis tisonlyana id and is not
as ubstitut efor attentive driving. G
WARNING
Active Blind Spot Assis tdoes no treac tto
vehicles:
R overtaking to oclosely on th eside ,placing
them in th eblinds pota rea
R if th edifference in th espeed of approach
and overtaking is to ogreat
As aresult ,Activ eBlind Spot Assis tmay nei-
ther giv ewarnings no rintervene in suchsit-
uations. There is ariskofana ccident.
Always pay careful attention to th etraffic sit-
uation and maintai nasafed istanc eattheside
of th evehicle.
Rada rsensors
The Active Blind Spot Assis trada rsensor sare
integrate dintot he fron tand rear bumpers and
behind acover in th eradiato rtrim. Mak esure
that th ebumpers and th ecover in th eradiator
trim are free of dirt, ice or slush. The rear sen-
sor sm ustn otbe covered, e.g. by bicycle racks
or overhangin gloads .Following asevere impact
or in th eevent of damage to th ebumpers ,have
th ef unction of th erada rsensor schecked at a
qualified specialist workshop .Activ eBlind Spot
Assis tmay otherwise no longer function prop-
erly.
Monitoring range G
WARNING
Active Blind Spot Assis tdoes no tdetec tall
traffic situation sand roa dusers. There is a
ris kofana ccident. Driving systems
221Driving and parking
Z

Important safety notes
If you fail to adapt your driving style, Activ eLane
Keepin gAssist can neither reduce th eriskofan
acciden tnor override th elaws of physics .Active
Lan eKeepin gAssist canno ttak ea ccoun tof
road and weather conditions. It may no tdetect
traffic situations. Activ eLaneK eepin gAssist is
only an aid. You are responsible for th edistance
to th evehicle in front, for vehicle speed, for
braking in good tim eand for staying in lane.
Activ eLaneK eepin gAssist canno tcontin uously
keep your vehicle in its lane. G
WARNING
Activ eLaneK eepin gAssist canno talways
clearly detect lane markings.
In suc hcases, Activ eLaneK eepin gAssist
can:
R giv eanu nnecessar ywarning and then
mak eac ourse-correcting brak eapplication
to th evehicle
R neither giv eawarning no rintervene
Ther eisar iskofana ccident.
Always pay particula rattentio ntothetraffic
situation and keep within th elane ,especially
if Activ eLaneK eepin gAssist alert syou. Ter-
minate th einterventio ninanon-critical driv-
ing situation.
The system may be impaired or may no tfunction
if:
R there is poor visibility, e.g .due to insufficient
illumination of th eroad ,ord ue to snow, rain,
fog or spray
R there is glare, e.g .fro mo ncom ingt raffic, the
sun or reflectio nfromo ther vehicle s(e.g. if
th er oad surface is wet)
R thew indscree nisdirty, miste dup, damaged
or covered, for instance by asticker, in the
vicinity of th ecamera
R ther adar sensor sinthefron torr ear bumpers
or th eradiator trim are dirty, e.g .obscured by
snow
R no or several, unclear lane markings are pres-
en tfor on elane ,e.g.inac onstruction area
R thel ane markings are worn away, dark or cov-
ere dup, e.g .bydirt or snow
R thed istanc etothevehicle in fron tistoosmall
and th elane markings thus canno tbedetec-
ted R
thel ane markings chang equickly, e.g. lanes
branch off ,cross on eanother or merge
R ther oad is narrow and winding
R there are highly variable shad econdi tionson
th er oad
If no vehicle is detected in th eadjacent lane and
broke nlane markings are detected, no lane-cor-
rectin gbrak eapplication is made.
Warning vibration through th esteering
wheel
Aw arning may be given if afront wheel passes
ove ralane marking. It will warn you by mean sof
intermitten tvibration in th esteering wheel for
up to 1. 5seconds.
Lane-correcting brak eapplication
If you leave your lane under certain circumstan- ces ,the vehicle will brak ebriefly on on eside.
This is intended to help you return th evehicle to
th eo riginal lane. G
WARNING
Al ane-correcting brak eapplication cannot
always brin gthe vehicle back int othe original
lane .Ther eisar iskofana ccident.
Always steer ,brak eora ccelerate yourself,
especially if Activ eLaneK eepin gAssist warns
you or makes alane-correcting brak eappli-
cation. If
al ane-correcting brak eapplication occurs,
display :appear sinthemultifunction display.
The brak eapplication also slightly reduces driv-
ing speed.
This function is available in aspee drange
between 60 km/h and 20 0km/ h.
Al ane-correcting brak eapplication can be made
after driving ove ralane markin gdetected as
bein gsolid or broken. Before this, awarning 224
Driving systemsDriving and pa
rking

Warning/
indicator
lamp
N N
Signal type
Possiblec auses/consequences and M
M Solutions ?
N
The red coolant warning lamp comes on while the engine is running.
The coolant leve listoo low.
If the coolant leve liscorrect, the airflow to the engine radiator may be blocked or
the electric engine radiator fan may be malfunctioning.
The coolant is too hot and the engine is no longer being coole dsufficiently.
X Observe the additiona ldisplay messages in the multifunction display.
X Stop the vehicl eimmediately, paying attention to road and traffic conditions,
and switch off the engine.
X Safeguard the vehicl eagainst rolling away( Ypage1 72).
X Leave the vehicl eand keep asafe distance from the vehicl euntil the engine has
coole ddown.
X Check the coolant leve land top up the coolant, observing the warning notes
(Y page3 24).
X If you have to top up the coolant frequently, have the engine cooling system
checked.
X Make sure that the air supply to the engine radiator is not blocked ,e.g. by frozen
slush.
X Do not start the engine again until the coolant temperature is below 120 †. The
engine may otherwise be damaged.
X Drive to the neares tqualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in mountainous terrain
and stop-start traffic. ?
N
The red coolant warning lamp comes on while the engine is running. Awarning
tone alsos ounds.
The coolant temperature has exceede d120 †. The airflow to the engine radiator
may be blocked or the coolant leve lmay be too low.
G WARNING
The engine is not being coole dsufficiently and may be damaged.
Never drive with an overheated engine. Driving when youre ngine is overheated
can caus esome fluids which may have leaked into the engine compartment to
catch fire.
In addition, steam from an overheated engine can caus eserious burns, which can
occur just by opening the bonnet.
There is arisk of injury.
X Observe the additiona ldisplay messages in the multifunction display.
X Stop the vehicl eimmediately, paying attention to road and traffic conditions,
and switch off the engine.
X Safeguard the vehicl eagainst rolling away( Ypage1 72).
X Leave the vehicl eand keep asafe distance from the vehicl euntil the engine has
coole ddown.
X Check the coolant leve land top up the coolant, observing the warning notes
(Y page3 24).
X If you have to top up the coolant frequently, have the engine cooling system
checked. 292
Warning and indicator lamps in the instrument clusterOn-board computer and displays

Warning/
indicator
lamp
N N
Signal type
Possiblec auses/consequences and M
MSolutions X
Make sure that the air supply to the engine radiator is not blocked ,e.g. by frozen
slush.
X If the coolant temperature is below 120 †, you can continue driving to the
neares tqualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in mountainous terrain
and stop-start traffic. Driving systems
Warning/
indicator
lamp
N N
Signal type
Possiblec auses/consequences and M
MSolutions ·
N
The red distance warning lamp lights up while the vehicl eisinmotion.
The distance to the vehicl einfront is too smal lfor the spee dselected.
X Increase the distance. ·
N
The red distance warning lamp lights up while the vehicl eisinmotion.Awarning
tone alsos ounds.
You are approaching avehicle, apedestrian or astationary obstacl einyourline of
travel at too high aspeed.
X Be prepared to brake immediately.
X Pay carefu lattention to the traffic situation. You may have to brake or take
evasive action.
Further information on PRE ‑SAFE®
Brake (Y page75).
For further information on the distance warning function of COLLISION PREVEN-
TION ASSIST PLUS, see (Y page69). Warning and indicator lamps in the instrument cluster
293On-board computer and displays Z

Engine compartment
Bonnet
Important safety notes G
WARNING
An unlocked bonnet may open up when the
vehicle is in motion and bloc kyour view. There
is ar isk of an accident.
Never unlock th ebonnet when driving .Before
ever ytrip, ensure that th ebonnet is locked. G
WARNING
When bein gopened and closed, th ebonnet
may suddenly fall int othe closed position.
Ther eisar isk of injury to person sintherange
of movemen tofthebonnet.
Open and close th ebonnet only when nobody
is in th erange of movement. G
WARNING
If you open th ebonnet while th eengine is
overheatin gorwhile there is afireint he
engine compartment, you coul dcom einto
contac twith hot gases or other leaking ser-
vic ep roducts. Ther eisadanger of injury.
Allo wano verheatin gengine to coo ldown
before opening th ebonnet .Ifthere is afirein
th ee ngine compartment, leave th ebonnet
closed and notif ythe fireb rigade. G
WARNING
Ther eare moving component sintheengine
compartment. Certain component smay con-
tinue to mov eorsuddenly mov eagain even
after th eignition has been switched off ,e.g.
th er adiator fan .Ther eisar isk of injury.
If you have to carry out work in th eengine
compartment:
R switch off th eignition
R never touch th edangerous areas surround-
ing moving components, e.g .the rotation
area of th efan R
remove jeweller yand watches
R keep items of clothing and hair, for exam-
ple, away from moving parts. G
WARNING
The ignition system and th efuel injection sys-
te mo perate with ahigh voltage. If you touch
th el ive components, you coul dreceive an
electric shock. Ther eisadanger of injury.
Never touch component softheignition sys-
te mort hefuel injection system when the
ignition is switched on.
Activ ebonnet (pedestria nprotection) Operating principle
! An active bonnet that had been triggered
must be repaired at aqualified specialist
workshop .The active bonnet function will
then be availabl eagain .The additional pedes-
trian protection provide dbytheactive bonnet
will then be restored.
The active bonnet is only availabl eincertain
countries.
The active bonnet can reduc ethe risk of injury to
pedestrians in certain acciden tsituations .Rais-
ing th eactive bonnet increases th eclearance to
hard components, suc hastheengine.
If th eactive bonnet has been triggered, it is
raise datt herear in th earea aroun dthe hinge by
approximately 85 mm .The active bonnet is trig-
gered by pyrotechnics.
For th edrivetot heworkshop ,reset th etrig-
gered active bonnet yourself. If th eactive bon-
net has been triggered, pedestrian protection
may be limited.
Resetting G
WARNING
Certain component sintheengine compart-
men tcoul dbev eryh ot,e .g.t he engine ,the
radiator and part softheexhaust system.
Ther eisar isk of injury when accessing the
engine compartment.
As far as possible, allow th eengine to cool
down and only touch th ecomponent sdescri-
bed in th efollowing. Engine compartment
321Maintenance and care Z