2017 MERCEDES-BENZ C-Class COUPE engine

must accept any interference, including inter-
ference that may cause undesired operation of
the device."
Diagnostics connection
The diagnostics connection is only intended forthe connection of diagnostic equipment at a
qualified specialist workshop.
GWARNING
If you connect equipment to the diagnostics
connection in the vehicle, it may affect the
operation of the vehicles ystems. Asaresult,
the operating safety of the vehiclec ould be
affected. There is arisk of an accident.
Do not connect any equipment to adiagnos-
tics connection in the vehicle.
GWARNING
Objects in the driver'sf ootwellcan restrict the
pedalt ravel or obstruct adepressed pedal.
The operating and road safety of the vehiclei s
jeopardized. There is arisk of an accident.
Make sure that all objects in the vehiclea re
stowed correctly, and that they cannot enter
the driver' sfootwell. Install the floormats
securely and as specified in order to ensure
sufficient clearance for the pedals. Do not use
loose floormats and do not place floormats on
top of one another.
!If the engine is switched off and equipment
on the diagnostics connection is used ,the
starter battery may discharge.
Connecting equipment to the diagnostics con-
nection can leadtoe missions monitoring infor-
mation being reset, for example. This may lead
to the vehiclef ailing to meet the requirements of
the next emissions test during the main inspec-
tion.
Qualified specialist workshop
An authorized Mercedes-Benz Center is aquali-
fied specialist workshop .Ithas the necessary
specialist knowledge, tools and qualifications to
correctly carry out the work required on your vehicle. This is especiall
ythe case for work rel-
evant to safety.
Observe the notes in the Maintenance Booklet.
Always have the following work carried out at an
authorized Mercedes-Benz Center:
Rwork relevant to safety
Rservice and maintenance work
Rrepair work
Ralterations, installation work and modifica-
tions
Rwork on electronic components
Correc tuse
If you remove any warning stickers, you or oth-
ers could fail to recognize certain dangers.
Leave warning stickers in position.
Observe the following informatio nwhen driving
you rvehicle:
Rthe safety notes in this manual
Rthe vehiclet echnical data
Rtraffic rulesand regulations
Rlaw sand safety standard spertaining to motor
vehicles
Problems with your vehicle
If you should experience aproblem with your
vehicle, particularl yone that you believe may
affect its safe operation, we urge you to contact
an authorized Mercedes-Benz Center immedi-
ately to have the problem diagnosed and recti-
fied. If the problem is not resolvedtoy ours at-
isfaction, please discuss the problem again with
aM ercedes-Benz Center or contact us at one of
the following addresses.
In the USA
Customer Assistance Center
Mercedes-Benz USA, LLC
One MercedesD rive
Montvale, NJ 07645-0350
In Canada
Customer Relations Department
Mercedes-Benz Canada ,Inc.
98 Vanderhoof Avenue
Toronto, Ontario M4G 4C9
Operating safety29
Introduction
Z

Instrumentcluster
FunctionPag e
:Speedometer
Speedometer segments200
Warning and indicator lamps:
å ESP®OF F249
÷ ESP®24 9
· Distanc ewarning255
Ð Powersteering25 7
6 Restrain tsystem41
ü Seat belt s247
K High-beam headlamps111
L Low-beam headlamps111
8 Reserve fuel level wit h
fuel filler flap location indica-
to r( right )
252
T Parking lamp s111
R Rear fog lamp111
h Tirep ressur emonitor256
;#! Turn signals111
=Multifunction display202
?Tachometer201
FunctionPag e
Warning and indicator lamps:
! Electric parking brak e
(yellow)25 2
! ABS249
; CheckEngine25 2
% This indicator lamp has
no function
Electric parking brak e(red)25 2
F USAo nly
! Canad aonly
Brake s(red)24 8
$ USAo nly
J Canad aonly
M SPORT handlin gmode
in Mercedes-AM Gvehicles251
? Coolan t253
é This indicator lamp has
no function
ACoolan ttem perature display201
B8 Fuellevel indicator25 2
iInformation on th edisplay of th eoutside
temperature in th emultifunction display can
be foun dunder "Outside temperature dis-
play" (
Ypage 201).
34Instrumen tcluster
At ag lance

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

All seatbelts except the driver's sea tbelta re
equipped with aspecia lsea tb eltr etractor to
securel yfasten child restraint system sinthe
vehicle. Further informatio ncan be found under
"Special sea tbeltr etractor" (
Ypage 57).
Releasin gseatb elts
!Make sure thatt he seatbeltisf ullyrolle dup.
Otherwise, the sea tbeltorb eltt ongu ewillb e
trappe dinthe door or in the sea tmechanism.
Thi scould damage the door, the door trim
panel and the sea tbelt. Damaged sea tbelts
can no longerf ulfill thei rprotective function
and must be replaced .Visit aquali fied spe-
cialist workshop.
XPress the release button in the belt buckle,
hol dthe belt tongu efirmly and guid ethe belt
back.
Seat belt adjustment
The seat-belt adjustment is an integra lparto f
the PRE-SAFE®convenience function. Thi sfun c-
tio na djusts the driver's and front-passenger
sea tbelttot he uppe rbodyoft he occupants.
The belt strapist ightenedslightly when:
Rthe belt tongu eisengaged in the buckle and
Rthe ignition is switched on
The seat-belt adjustment will appl yacertain
retractio nforc eifa ny slack is detecte dbetween
the vehicl eoccupant and the sea tbelt. Do not
hol dontot he seatbeltt ightlyw hileit is adjust-
ing.
Yo uc an activate and deactivate the seat-belt
adjustment functio nusing the multimedia sys-
tem. Informatio nonactivating and deactivating
the seat-belt adjustment functio ncan be found
in the Digita lOperator' sManualorint he sepa-
rate multimedia system operating instructions.
Bel twarning fort he driver and front
passenger
The 7 seatbeltw arning lamp in the instru-
ment cluster is areminder thata llvehicl eoccu-
pants must wear thei rseatb elts .Itm aylight up
continuously or flash. In addition, ther emaybe
aw arning tone.
Regardless of whethe rthe driver's sea tbelth as
already been fastened, the 7seatbeltw arn-
ing lamp lights up for sixs econdseach timethe
engine is started. If th edoorsa re closed and the driver'sorf
ront-passenger seat belt has not
been fastened, the 7seat belt warning lamp
lightsupa gain after th esix seconds. As soon as
th ed river'sa nd front-passenger seat beltsa re
fastene dorad oor is opened again,t he7
seat belt warning lamp goes out.
If th edriver'ss eat belt is no tfastene dafter the
engine is started, an additional warning tone will
sound. The warning tone switches off after six
seconds or once th edriver'ss eat belt is fas-
tened.
If th evehicle's speede xceeds 15 mph
(25 km/h) once and th edriver'sa nd front-
passenger seat beltsa re notfastened, awarning
tone sounds. Awarning tone also sounds with
increasing intensity for 60 seconds or until the
driver or frontp assenger have fastene dtheir
seat belts.
If th edriver or frontp assenger unfasten their
seat beltsd uringthejourney, th eseat belt warn-
ing is activ
ated again.
Air bags
Introduction
The installatio npointofana ir bag can be rec-
ognize dbytheAIRB AG symbol.
An air bag complement sthe correctly fastened
seat belt.Itisnos ubstitutefor th eseat belt.T he
air bag provides additional protection in appli-
cable accidents ituations.
Not all air bags are deployed in an accident. The
differenta ir bag systems function independ-
ently from onea nother (
Ypage 53).
However ,nosystem availabl etoday can com-
pletely eliminat einjuries and fatalities.
It is also no tpossible to rule out arisk of injury
caused by an air bag due to th ehigh speeda t
whicht heair bag must be deployed.
Important safety notes
GWARNING
If you do no tsit in th ecorrec tseat position,
th ea ir bag canno tprotect as intended and
coul deven caus eadditional injury when
deployed. This posesani ncreased risk of
injury or even fatal injury.
46Occupant safety
Safety

Rthe front side windows arelower ed
Rvehicles with amemory function: the electri-
cally adjustable steering whee lisraised
Rthe engine is switched off and the fuel supply
is cut off
Rvehicles with mbrace :automatic emergency
call
Children in the vehicle
Important safety notes
Accident statistics sho wthatc hildren secured
in the rea rsea ts ar esafer thanc hildren secured
in the front-passenge rseat. For thisr eason,
Mercedes-Benz strongl yadvises thaty ouinstall
ac hild restraint systemonar ears eat. Children
ar eg enerall ybetter protecte dthere.
If ac hild younger thant welve yearsoldand
under 5ft(1.50 m)in height is travelingint he
vehicle:
Ralways secur ethe child in achild restraint
system suitable for Mercedes-Ben zvehicles.
The child restraint system must be appropri-
ate to the age, weight and size of the child
Rbe sure to observe the instructions and safety
notes in this section in addition to the child
restraint system manufacturer'si nstallation
instructions
Rbe sure to observe the instructions and safety
notes on the "Occupant classification system
(OCS)" (
Ypage 49)
GWARNING
If you leave children unsupervised in the vehi-
cle, the ycould set it in motion by, for example:
Rrelease the parking brake.
Rshift the automatic transmission out of the
parking position P.
Rstartthe engine.
In addition ,the ym ay operatev ehicle equip-
menta nd becom etrapped. There is arisk of
an accident and injury.
When leavingt he vehicle, always tak ethe
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
GWARNING
If persons, particularly children are subjected to prolonged exposure to extreme heat or
cold, there is arisk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
GWARNING
If the child restraint system is subjected to
directs unlight, partsm ay get very hot.C hil-
dren may burn themselves on these parts,
particularly on the metal partsoft he child
restraint system. There is arisk of injury.
If you leave the vehicle, taking the child with
you, always ensure that the child restraint
system is not exposed to directs unlight. Pro-
tec titw ithablanket, for example. If the child
restraint system has been exposed to direct
sunlight, let it cool down befores ecuring the
child in it. Never leave children unattended in
the vehicle.
Always ensure that all vehicle occupant shave
their seat belts fastened correctly and are sitting
properly. Particular attention must be paid to
children.
Observe the safetyn otes on the seat belt
(
Ypage 43) and the notes on correctu se of seat
belts (Ypage 44).
Ab ooster seat may be necessary to achieve
proper seat belt positionin gfor children over
41 lbs (1 8kg)until the yreach aheight where a
three-point seat belt can be properly fastened
without abooster seat.
Specia lseat belt retractor
GWARNING
If the seat belt is released while driving, the
child restraint system will no longer be
secured properly. The special seat belt retrac- tor is disabled and the inertia real draws in a
portion of the seat belt. The seat belt cannot
be immediately refastened. There is an
increased risk of injury, possibly even fatal.
Stop the vehicle immediately, paying atten-
tion to road and traffic conditions. Reactivate
Children in th evehicle57
Safety
Z

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

It may be best to deactivate ESP®in the follow-
ing situations:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
iActivate ESP®as soon as the situations
describeda bove no longer apply. ESP®will
otherwise not be abl etostabilize the vehicle if
the vehicle starts to skid or awheel starts to
spin.
!Avoid spinning the driven wheel sfor an
extended period with ESP®deactivated. You
could otherwise damage the drivetrain.
Deactivating/activating ESP®
You can deactivate or activate ESP®via the on-
board computer (Ypage 212)
ESP®deactivated:
The å ESP®OFF warning lamp in the instru-
ment cluster lights up.
ESP
®activated:
The å ESP®OFF warning lamp in the instru-
ment cluster goes out.
Characteristic swhen ESP®is deactivated
If ESP®is deactivated and one or more wheels
start to spin, the ÷ESP®warning lamp in the
instrument cluster flashes. In such situations,
ESP
®wil lnot stabilize the vehicle.
If you deactivate ESP®:
RESP®no longer improves driving stability.
REngine torque is no longer limited and the
drive wheel sare abl etospin.
The spinning of the wheel sresults in acutting
action for better traction on loose surfaces.
RTraction control is still activated.
RCOLLISION PREVENTION ASSISTisnol onger
available; nor is it activated if you brake firmly
with assistance from ESP
®.
RPRE-SAFE®is no longer available, nor is it
activated if you brake firmly and ESP®inter-
venes.
RPRE-SAFE®Brake is no longer available, it is
also not activated if you brake firmly and ESP®
intervenes.
RESP®still providess upport when you brake
firmly.
Deactivating/activating ESP®
(Mercedes‑AMG vehicles)
Important safety notes
iObserve the "Important safety notes" sec-
tion (Ypage 61).
You can select betwee nthe following states of
ESP
®:
RESP®is activated.
RSPORT handling mode is activated.
RESP®is deactivated.
GWARNING
When SPORT handling mode is activated,
there is agreater risk of skidding and acci-
dents.
Only activate SPORT handling mode in the sit-
uations describedint he following.
GWARNING
If you deactivate ESP
®,E SP®no longer sta-
bilizes the vehicle.T here is an increased risk
of skidding and an accident.
Only deactivate ESP
®in the situations descri-
bed in the following.
!Avoid spinning the driven wheelsf or an
extended period with ESP®deactivated. You
could otherwise damage the drivetrain.
In the following situations, it may be better to
activate SPORT handling mode or deactivate
ESP
®:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
Ron specially designated roads when the vehi-
cle's own oversteering and understeering
characteristics are desired
Driving in SPORT handling mode or without
ESP
®requires an extremely qualifieda nd expe-
rienced driver.
iActivate ESP®as soon as the situations
describeda bove no longer apply. ESP®will
otherwise not be abl etostabilize the vehicle if
the vehicle starts to skid or awheel starts to
spin.
68Driving safety systems
Safety