2017 MERCEDES-BENZ C-Class COUPE check engine light

AMG sportsexhaust system ............ 137
Anti-lock braking system
see AB S(Anti-lock BrakingSystem)
Anti-Thef tAlarms ystem
see AT A(Anti-Theft Alarmsystem)
Arm rest
St owage compartment. .................269
Asht ray.............................................. .275
Assistanc edisplay (on-board com-
puter) ..................................................2 11
Assistanc emenu (on-board com-
puter) ..................................................2 12
ASSYST PLUS
Displaying aservice message ........2 91
Driving abroad ............................... 292
Hiding aservice message .............. 291
Resetting the service intervald is-
pla y................................................ 291
Service message ............................ 290
Specia lservice requirements ......... 291
ATA (Anti-Theft Alarm system)
Activating/deactivating ................... 73
Function ...........................................7 3
Switching off the alarm .................... 73
ATTENTIO NASSIS T
Activating/deactivating ................. 213
Displa ymessage ............................ 236
Function/note s............................. 189
Authorized Mercedes-Benz Center
see Qualifie dspecialist workshop
Authorized workshop
see Qualifie dspecialist workshop
AUTO lights
Displa ymessage ............................ 231
see Lights
Automatic car was h(care) ............... 292
Automatic engine start (ECO start/
stopf unction) .................................... 136
Automatic engine switch-off (ECO
start/stopf unction).......................... 135
Automatic headlamp mode .............. 110
Automatic transmission
Accelerator peda lposition ............. 143
Changing gea r............................... 143
DIREC TS
ELEC
T lever ..................... 141
Displa ymessage ............................ 243
Double-clutch function .................. 143 Drive progra
m................................ 144
Drive progra mdisplay .................... 142
Driving tip s.................................... 143
DYNAMIC SELECT switch .............. 139
Emergency running mod e.............. 149
Engaging drive position .................. 142
Engaging neutral ............................ 141
Engaging park position automati-
cally ............................................... 141
Engaging reverse gea r................... 141
Engaging the park position ............ 141
Gliding mod e................................. 144
Kickdown. ...................................... 144
Manua lshifting .............................. 146
Oil temperature (on-board com-
puter, Mercedes-AM Gvehicles) ..... 216
Overview ........................................ 140
Problem (malfunction) ................... 149
Pulling away ................................... 134
Rocking the vehicl efree ................ 144
Starting the engine ........................ 133
Steering wheelp addleshifters ...... 146
Transmission position display
(DIRECT SELECT lever) ................... 142
Transmission positions .................. 143
Automatic transmissio nemer-
gencym ode....................................... 149
B
Back button ....................................... 259
Bag hook ............................................ 272
BAS (Brake Assist System) ................. 62
BAS PLUS with Cross-TrafficA ssist
(Brake Assist PLUS with Cross-
TrafficA ssist)
Function/note s................................ 62
Important safety notes .................... 63
Battery (SmartKey)
Checking .......................................... 77
Important safety notes .................... 77
Replacing ......................................... 77
Battery (vehicle)
Charging ........................................ 307
Displa ymessage ............................ 233
Important safety notes .................. 305
Jump starting ................................. 308
4Index

Centrallocking
Locking/unlockin g(SmartKey) ........ 74
Changing bulbs
High-beam headlamps .................. .115
Low-beam headlamps .................... 115
Turn signals (front) ......................... 115
Changing the media source ............. 208
Charge-air pressure (on-board
computer, Mercedes-AMG vehi-
cles) .................................................... 216
Child
Restraint system .............................. 58
Child seat
Forward-facing restraint system ...... 61
LATCH-typ e(ISOFIX) chil dseat
anchors ............................................ 59
On the front-passenger seat. ........... 60
Rearward-facing restraint system .... 60
Top Tether ....................................... 59
Children
Specia lsea tb eltr etractor ............... 57
Cigarette lighter ................................ 275
Cleaning
Mirror turn signal ........................... 296
Climate control
Control panel for dual-zone auto-
mati cclimate control ..................... 121
Controlling automaticall y............... 123
Cooling with ai rdehumidifica tion .. 123
Cooling with ai rdehumidifica tion
(multimedia system) ...................... 263
Defrosting the window s................. 125
Defrosting the windshield .............. 124
ECO start/stop function (3-zone
automatic climate control )............. 122
Genera lnotes ................................ 120
Indicato rlam p................................ 123
Ionization ....................................... 128
Ionization (multimedia system) ...... 263
Note sonu sing the automatic cli-
mate control .................................. 121
Overview ........................................ 262
Overview of systems ...................... 120
Perfum eatomize r.......................... 126
Perfum eatomize r(multimedia
system) .......................................... 263
Problem with the rea rwindow
defroster ........................................ 126 Problems with cooling with air
dehumidification
............................ 123
R

efrigerant ..................................... 348
Refrigerant filling capacity ............. 349
Setting the ai rdistribution ............. 124
Setting the ai rvents ...................... 128
Setting the airflow ......................... 124
Setting the climate mod e(multi-
media system) ............................... 263
Setting the temperature ................ 124
Switching air-recirculation mode
on/of f............................................ 126
Switching on/of f........................... 122
Switching the rea rwindow
defroster on/of f............................ 125
Switching the synchronization
function on and off ........................ 124
Synchronization function (multi-
media system) ............................... 263
Climate controls ettings
Multimedia system ........................ 262
Climate controls ystem
Climate control (3-zone automatic
climate control )............................. 122
Cockpit
Overview .......................................... 33
COLLISIO NPREVENTION ASSIST
PLUS
Activating/deactivating ................. 212
Displa ymessage ............................ 225
Operation/note s.............................. 64
COMAND display
Cleaning ......................................... 297
Combination switch .......................... 111
Connecting aUSB device
see also Digital Operator's Man-
ua l.................................................. 258
Consumptions tatistics (on-board
computer) .......................................... 205
Controller ........................................... 259
Convenience closin gfeature .............. 88
Convenience opening feature ............ 88
Coolant (engine)
Checking the level ......................... 290
Displa ymessage ............................ 232
Filling capacity ............................... 348
Important safety notes .................. 347
6Index

EBD (electronic brake force distri-
bution)Display message ............................ 222
Function/notes ................................ 70
ECO display
Function/notes ............................ .156
On-board computer ....................... 205
EC Os tart/stop function
Automatic engine start .................. 136
Automatic engine switch-off .......... 135
Deactivating/activating ................. 136
General information ....................... 135
Important safety notes .................. 135
Introduction ................................... 135
Electroni cStability Program
see ESP
®(Electroni cStability Program)
Emergency
Automatic measure safter an acci-
dent ................................................. 56
Emergency release
Driver's door ....................................8 2
Trunk ............................................... 87
Vehicle ............................................. 82
Emergency Tensioning Devices
Activation ......................................... 53
Emissions control
Servicea nd warranty information ....2 6
Engine
CheckE nginew arning lamp .......... .252
Display message ............................ 232
ECO start/stop function ................ 135
Engine numbe r............................... 344
Irregularr unning ............................ 138
Jump-starting ................................. 308
Starting (important safety notes) ... 133
Starting problems .......................... 138
Starting the engine with the
SmartKey ....................................... 133
Starting via smartphone ................ 134
Starting with the Start/Stop but-
ton ................................................. 133
Switching off .................................. 153
Tow-starting (vehicle )..................... 313
Engine electronics
Problem (malfunction) .............. ..... 138
E

ngine oil
Adding ...........................................2 89
Additives ........................................ 347 Checking the oil leve
l..................... 288
Checking the oil leve lusing the
dipstick .......................................... 289
Display message ............................ 234
Filling capacity ............................... 347
General notes ................................ 346
Notes about oil grades ................... 346
Notes on oil level/consumption .... 288
Temperature (on-board computer,
Mercedes-AMG vehicles) ...............2 16
Entering an address
see also Digita lOperator's Man-
ua l..................................................2 58
ESP
®(Electronic Stability Pro-
gram)
AMG menu (on-board computer) ... 216
Characteristics ................................. 67
Crosswind Assist .............................7 0
Deactivating/activating (button
in Mercedes-AMGv ehicles).............6 8
Deactivating/activating (except
Mercedes‑ AMG vehicles )................. 67
Deactivating/activating (on-
boar dcomputer, except
Mercedes-AMGv ehicles)............... 212
Display message ............................ 220
Function/note s................................ 67
Genera lnotes .................................. 67
Important safety information ........... 67
Trailer stabilization ........................... 69
Warning lamp ................................. 249
Exhaust
see Exhaus tpipe
Exhaustc heck................................... 156
Exhaustp ipe
Cleaning ......................................... 296
Exterior lighting
Cleaning ......................................... 295
see Lights
Exterior mirrors
Adjusting ....................................... 106
Dipping (automatic) ....................... 107
Folding in/out (automatically )....... 107
Folding in/out (electrically) ........... 107
Outofp osition (troubleshooting )... 107
Setting ........................................... 107
Storing settings (memory func-
tion) ............................................... 109
Index9

regular intervalswhile the engine is running.
Therefore, malfunctions can be detected in
good time.
The 6 restraint system warning lamp in the
instrument cluster lights up when the ignitio nis
switched on. It goes out no later than afew sec-
onds after the vehicl eisstarted. The compo-
nents of the restraint system are in operational
readiness.
Am alfunction has occurred if the 6restraint
system warning lamp:
Rdoes not light up after the ignitio nisswitched
on
Rdoes not go out after afew seconds with the
engine running
Rlights up again while the engine is running
GWARNING
If restraint system is malfunctioning, restraint
system components may be triggeredu nin-
tentionall yormight not be triggeredata ll in
the event of an accident with ahigh rate of
vehicl edeceleration. This can affect the Emer-
gency Tensioning Device or air bag ,for exam-
ple. This poses an increase drisk of injury or
even fatal injury.
Have the restraint system checked and
repaired in aqualified specialist workshop as
soon as possible.
PASSENGER AI RBAG indicator lamp
PASSENGER AIR BAG ON indicator lamp :and
PASSENGER AIR BAG OFF indicator lamp ;are
part of the Occupant Classification System
(OCS). The indicator lamp
sdisplay the status of the
front-passenge rfront air bag.
RPASSENGER AIR BAG ON lights up: the front-
passenger front air bag is enabled. If, in the
event of an accident, all deployment criteria
are met, the front-passenge rfront air bag is
deployed.
RPASSENGER AIR BAG OFF lights up: the front-
passenger front air bag is deactivated. It will
then not be deploye dinthe event of an acci-
dent.
Depending on the person in the front-passenger
seat, the front-passenge rfront air bag must
either be deactivated or enabled; see the fol-
lowing points. You must make sure of this both
before and during ajourney.
RChildren in achildr estraint system:
whethe rthe front-passenge rfront air bag is
enabled or deactivated depends on the instal-
led child restraint system, and the age and
size of the child .Therefore, be sure to observe
the notes on the "Occupant Classification
System (OCS)" (
Ypag e49) and on "Chil-
dren in the vehicle" (Ypag e57). There you
wil lalsof ind instructions on rearward and
forward-facing child restraint systems on the
front-passenge rseat.
RAll other persons: depending on the classi-
ficatio nofthe person in the front-passenger
seat, the front-passenge rfront air bag is ena-
bled or deactivated (
Ypag e49). Be sure to
observe the notes on "Seat
belts“ (
Ypag e42) and "Air bags"
(Ypag e46). There you can als ofind infor-
mation on the correct seat position.
Seat belts
Introduction
Seat belts are the most effective means of
restricting the movement of vehicl eoccupants
in the event of an accident or the vehicl erolling
over. This reduces the risk of vehicl eoccupants
coming into contact with parts of the vehicle
interior or being ejected from the vehicle. Fur-
thermore, the seat belt help stokeep the vehicle
occupant in the best position in relation to the
air bag.
42Occupant safety
Safety

ABS (Anti-lock Braking System)
Gene ralinform ation
ABSregulates brak epressur einsuchaw ay that
th ew heels do no tloc kw hen you brake. This
allows you to continu esteering th evehicl ewhen
braking .
The ! ABSw arning lamp in th einstrumen t
cluste rlights up when th eignition is switched
on .Itg oeso ut when th eengineisr unning.
AB Sw orks from aspee dofa bout5mph
(8 km/h), regardless of road-surface conditions.
AB Sw orks on slipper ysurfaces, eve nwhen you
only brak egently.
Import ant safety notes
iObservethe "Importan tsafet ynotes "sec-
tion (Ypage 61).
GWARNIN G
If AB Sisf aulty, th ewheels could loc kwhen
braking .The steerabilit yand braking charac -
teristics may be severely impaired. Addition -
ally, further drivin gsafet ysystems are deac -
tivated. There is an increased danger of skid-
din gand accidents .
Drive on carefully. Hav eABS checke dimme-
diately at aqualified specialis tworkshop .
When AB Sismalfunctioning ,other systems ,
includin gdrivin gsafet ysystems ,will also
become inoperative. Observ ethe information
on th eABS warning lamp (
Ypage 249) and dis-
play message swhichm ay be shown in th e
instrumen tcluste r(
Ypage 220).
Braking
XIf ABS intervenes: continuetodepress th e
brak epedal vigorously until th ebraking sit -
uation is over.
XTo make afullb rake application: depress
th eb rak epedal wit hfull force .
If AB Sintervenes when braking ,you will fee la
pulsing in th ebrak epedal .
The pulsating brak epedal can be an indication
of hazardous road conditions, and function sasa
reminder to tak eextra carew hile driving.
BAS (Brak eAssistS ystem)
Gene ralinform ation
BASo perate sinemergenc ybraking situations.
If you depress th ebrak epedal quickly, BA S
automatically boosts th ebraking force ,thu s
shortening th estopping distance.
Imp ortant safety notes
iObserv ethe "Importan tsafet ynotes "sec-
tion (Ypage 61) .
GWARNIN G
If BA Sism alfunctioning ,the braking distanc e
in an emergenc ybraking situation is
increased. There is ariskofana ccident.
In an emergenc ybraking situation ,depress
th eb rak epedal wit hfull force .ABS prevents
th ew heels from locking .
Braking
XKeepthe brak epedal firmly depressed until
th ee mergenc ybraking situation is over.
AB Sp revents th ewheels from locking .
The brakes will function as usual once you
release th ebrak epedal .BAS is deactivated.
BAS PLUS (Brak eAssistS ystem
PLUS)w ith Cross-Traffic Assist
Gene ralinform ation
BASP LUSc an help you to minimiz ethe riskofa
collision wit havehicleorap edestrian and
reduce th eeffects of suc hacollision .IfBAS
PLU Sdetects adanger of collision ,you are
assisted when braking .
iPay attention to theimportant safet ynotes
in th e"Drivin gsafet ysystems "section
(
Ypage 61) .
BA SP LUSiso nlya vailable on vehicles wit hthe
Drivin gAssistance package.
Fo rB AS PLU Stoa ssist you when driving, th e
radar sensor system and th ecamera system
mus tbeo perational.
62Driving safety systems
Safety

ESP®(Electronic Stability Program)
General notes
iObserv ethe "Important safety notes" sec-
tio n(Ypage 61).
ESP
®monitors driving stabilitya nd traction,i.e.
power transmission between th etires and the
road surface.
If ESP
®detect stha tthe vehicle is deviatin gfrom
th ed irection desired by th edriver, oneorm ore
wheels are braked to stabilizet hevehicle .The
engine output is also modified to keep th evehi-
cle on th edesired course within physical limits.
ESP
®assists th edriver when pullinga way on
wet or slippery roads. ESP®can also stabilize
th ev ehicle durin gbraking.
Important safety notes
iObserv ethe "Important safety notes" sec-
tio n(Ypage 61).
GWARNING
If ESP
®is malfunctioning, ESP®is unabl eto
stabilizet hevehicle .Additionally, further driv-
ing safety systems are deactivated. This
increases th erisk of skiddinga nd an accident.
Drive on carefully. Hav eESP
®checked at a
qualified specialist workshop.
When towing th evehicle with th erear axle
raised, observ ethe note sonE SP
®
(Ypage 311).
If the å ESP®OFFw arning lamp lightsu p
continuously, ESP®is deactivated.
If the ÷ ESP®warning lamp lightsupc ontin-
uously, ESP®is no tavailabl edue to amalfunc-
tion.
Observ ethe informatio nonwarning lamps
(
Ypage 249) and display messages whichm ay
be shown in th einstrumen tcluster
(
Ypage 220).
Only use wheels with th erecommended tire
sizes. Only then will ESP
®function properly.
Characteristics of ESP®
General information
If the ÷ ESP®warning lamp goes out before
beginnin gthe journey, ESP®is automatically
active.
If ESP
®intervenes, the ÷ESP®warning lamp
flashes in th einstrumen tcluster.
If ESP
®intervenes:
XDo no tdeactivate ESP®unde rany circum-
stances.
XOnly depress th eaccelerato rpedal as far as
necessaryw hen pullinga way.
XAdaptyour driving style to suit th eprevailing
road and weather conditions.
ECO start/stop function
The ECO start/sto pfunction switches the
engine off automaticall ywhen th evehicle stops
moving .The engine start sautomaticall ywhen
th ed river want stopull away again.E SP
®
remains in its previously selecte dstatus. Exam-
ple: if ESP®was deactivate dbefore th eengine
was switched off ,ESP®remains deactivated
when th eengine is switched on again.
Deactivating/activatin gESP®(except
Mercedes ‑AM Gvehicles)
Important safety notes
iObserv ethe "Important safety notes" sec-
tio n(Ypage 61).
You can selectb etween thefollowings tate so f
ESP
®:
RESP®is activated.
RESP®is deactivated.
GWARNING
If you deactivate ESP
®,E SP®no longer sta-
bilizes th evehicle .Thereisani ncreased risk
of skiddinga nd an accident.
Only deactivate ESP
®in th esituations descri-
bed in th efollowing.
Driving safety systems67
Safety
Z

ProblemPossible causes/consequences andMSolutions
The engine cannot be
started using the Smart-
Key.The on-board voltage is too low.
XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary (Ypage 307).
or
XJump-start the vehicle (Ypage 308).
or
XConsult aqualified specialist workshop.
The engine cannot be
started using the Start/
Stop button. The Smart-
Key is in the vehicle.The vehicle is locked.
XUnlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 77) and replace it if necessary
(Ypage 77).
If this does not work:
XStart your vehicle with the SmartKey in the ignition lock.
There is interference from apowerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
You have lost aSmart-
Key.XHave the SmartKey deactivated at aqualified specialist workshop.
XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
You have lost the
mechanical key.XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
Doors
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 arisk 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.
80Doors
Opening and closing

Problems with the seat heating or seat ventilation
ProblemPossible causes/consequences andMSolutions
The seat heating or seat
ventilation has switched
off prematurely or can-
not be switched on.The on-board voltage is too low because too many electrical consum-
ers are switched on.
XSwitch off electrical consumers that you do not need, such as the
rear window defroster or interior lighting.
Once the battery is sufficiently charged, the seat heating or seat
ventilation can be switched back on manually.
Steering wheel
Important safety notes
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 arisk of an accident.
Adjust the driver's seat, head restraint,s teer-
ing wheel and mirror and fasten your seat belt before startin gthe engine.
GWARNING
Children could injure themselves if they
adjust the steering wheel. There is arisk of
injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The electrically adjustable steering wheel can
still be adjusted when there is no key in the igni-
tion lock.
Adjusting the steering wheel man-
ually
:Release lever
;Adjustst he steering wheel height
=Adjuststhe steering wheel position (fore-
and-aft adjustment)
XPush release lever :down completely.
The steering column is unlocked.
XAdjust the steering wheel to the desired posi-
tion.
XPush release lever :up completely.
The steering column is locked.
XCheck if the steering column is locked. When
doing so, try to push the steering wheel up or down or try to move it in the fore-and-aft
direction.
Steering wheel103
Seats, steering wheela nd mirrors
Z