2017 MERCEDES-BENZ C-Class COUPE engine

Hill start assist
Hill start assist helpsyou when pulling awa yfor-
wards or in reverse on an uphill gradient. It holds
the vehiclef oras hort time after you have
removed you rfoot from the brake pedal. This
gives you enoug htime to move you rfoot from
the brake pedaltot he accelerator pedala nd to
depress it before the vehicleb egins to roll.
GWARNING
After ashort time, hil lstart assist wil lnolon-
ger brake you rvehicl eand it coul droll away.
There is arisk of an accident and injury.
Therefore, quickly move you rfoot from the
brake pedaltot he accelerator pedal. Never
leave the vehiclew hen it is held by hillstart
assist.
Hill start assist is not active if:
Ryou are pulling awa yonalevelroad or on a
downhill gradient.
Rthe transmission is in position N.
Rthe electric parking brake is applied.
RESP®is malfunctioning.
ECOstart/stop function
Introduction
The ECO start/stop function switches the
engine off automatically if the vehicleiss topped
under certain conditions.
The engine starts automatically when the driver
wants to pul lawa ya gain. The ECO start/stop
function thereby help syou to reduce the fuel
consumption and emissions of you rvehicle.
Important safety notes
GWARNING
If the engine is switched off automatically and
you exit the vehicle, the engine is restarted
automatically .The vehiclem ay beginmoving.
There is arisk of accident and injury.
If you wis htoexit the vehicle, alway sturn off
the ignitio nand secure the vehiclea gainst
rolling away.
General notes
:ECO start/stop display
The ECO start/stop function is activated when-
ever you start the engine using the SmartKey or the Start/Stop button.
If the engine has been switched off automati-
call ybyt he ECO start/stop function, the è
ECO symbol is shownint he multifunction dis-
play.
Mercedes-AMG vehicles: the ECO start/stop
function is only available in drive program C.
Automatic engine switch-off
If the vehicleisb raked toastandstil lin D or N,
the ECO start/stop function switches off the
engine automatically.
The ECO start/stop function is operational
when:
Rthe indicator lamp in the ECO button is lit
green.
Rthe outside temperature is withi nthe range
that is suitable for the system.
Rthe engine is at normal operating tempera-
ture.
Rthe set temperature for the vehiclei nterior
has been reached.
Rthe battery is sufficiently charged.
Rthe system detects that the windshiel disnot
fogged up when the air-conditioning system is switched on.
Rthe hood is closed.
Rthe driver's door is closed and the driver's
seat beltisf astened.
All of the vehicle's systems remai nactive when
the engine is stoppeda utomatically.
The HOLD function can als obeactivated if the
engine has been switched off automatically .Itis
then not necessary to continue applying the
brakes during the automatic stop phase. When
you depress the accelerator pedal, the engine
starts automatically and the braking effect of
the HOLD function is deactivated.
Driving135
Driving and parking
Z

All vehicles (exceptMercedes-AMGvehi-
cles): automat icengines witch-off can take
plac eam aximum of four times inar ow (initial
stop, then three subsequents tops).
Mercedes-AM Gvehicles: then umber of con-
secutiv eautomat icengines witch-off sisunlimi-
te d.
Automatic engine start
The engines tartsa utomaticall yif:
Ryou switch off th eECO start /stopf unction by
pressingt heECO button
Ryou switch to driveprogram S+(all veh icles
excep tMercedes-AM Gvehicle s)
Ryou switch to driveprogram RACE
(S ‑MODEL), S+orS(Mercedes-AM Gvehicle s)
Ryou permanently activatem anual gearshifting
(Ypage 146) (Mercedes-AM Gvehicle s)
Rintransmission position Dor Ntheb rake
pedal isreleased and th eHOLDfunction isnot
active
Ryou depr ess th eaccelerato rpedal
Ryou engage revers egear R
Ryou mov ethe transmission out of position P
Ryou unfasten your seatbeltor open th edriv-
er' sd oor
Rthev ehicle start stor oll
Rtheb rak esystem requires th is
Rthet em peratur eintheveh icle interio rdevi-
ate sfromt heset range
Rthes ystem detect smoistur eont hewind -
shield when th eair-conditionin gsystem is
swit ched on
Rtheb attery's conditio nofcharge istool ow
Sh ifting th etransmission to position Pdoes not
start th eengine.
Deactivatin goractivatin gthe ECO
start/stop function
All vehicles (exceptM ercedes-AMGvehi-
cles)
XTo deactivate: press ECO button :.
In dicato rlamp ;goes out.
XTo activate: press ECO button :.
In dicato rlamp ;lightsu p.
If indicator lamp ;is off ,the ECO start/stop
function has been deactivate dmanually or as
th er esult of amalfunction. The enginew ill then
no tbes witched off automaticall ywhen th evehi-
cle stops.
Selecting driv eprogram S+deactivate sthe ECO
start /stopf unction.Ify ou press ECO button :,
th eE CO start/sto pfunction isactivated.
Mercedes-AM Gvehicles
XTo deactivate: press ECO button :.
In dicato rlamp ;goes out.
XTo activate: press ECO button :.
In dicato rlamp ;lightsu p.
If indicator lamp ;is off ,the ECO start/stop
function has been deactivate dmanually or as
th er esult of amalfunction. The enginew ill then
136Driving
Driving and parking

not be switched off automaticallywhenthe vehi-
cle stops.
The ECO start/stopf unctionisd eactivated, if:
Ryous witch to drive program RACE
(S‑MO DEL),S+orS(Ypage 139)
Ryo up ermanentlya ctivate manua lgearshifting
(Ypage 146)
If yo uhavep ermanentlya ctivatedmanual gear-
shifting and then press ECO button :,the ECO
start/stopf unctionisa ctivated.
AM Gsports exhausts ystem
(Mercedes AM Gvehicles)
Youc an choose between different AMG sports
exhaus tsystem volumes using the positio nof
the exhaus tflap.
Each time yo ustart the engine with the Smart-
Key or the Start/Stop button, the quietest set-
ting is activated.
Setting the volume:
XPress button :.
If yo uselect the loudest setting, indicator
lamp lights up ;.
Yo uc an also adjus tthe positio nofthe exhaust
fla pu sing the:
RDYNAMIC SELECTs witch (Ypage 139)
Rmultimedia system
Driving137
Driving an dparking
Z

Problems with the engine
ProblemPossible causes/consequences andMSolutions
The engine does not
start. The starter motor
can be heard.RThere isamalfunction in the engine electronics.
RThere is amalfunction in the fuel supply.
Before attempting to start the engine again:
XTurn the SmartKey back to position 0in the ignition lock.
or
XPress the Start/Stop button repeatedly until all indicator lamps in
the instrumentc luster go out.
XTry to start the engine again (Ypage 133). Avoid excessively long
and frequent attemptstos tart the engine as these will drain the
battery.
If the engine does not start after several attempts:
XConsult aqualified specialist workshop.
The engine does not
start. You cannot hear
the starter motor.The on-board voltage is too low because the battery is too weak or
discharged.
XJump-start the vehicle (Ypage 308).
If the engine does not start despite attempt stojump-start it:
XConsult aqualified specialist workshop.
The starter motor was exposed to athermal load that was too high.
XTry to start the engine again (Ypage 133).
If the engine still does not start:
XConsult aqualified specialist workshop.
The engine is not running
smoothly and is misfir-
ing.There is amalfunction in the engine electronics or in amechanical
componentoft he 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 aqualified specialist work-
shop.
The coolant temperature
gauge shows avalue
above 248 ‡(120 †).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 290). Observe the warning notes
as you do so and add coolant if necessary.
138Driving
Driving and parking

DYNAMIC SELECT switch
All vehicles (exceptMercedes-AMG
vehicles )
Use theDYNAMIC SELECT switch to chang ethe
drive program. Dependin gonthedrive program
selecte dthe followin gvehicle characteristics
will change:
Rth ed rive (engin eand transmissio nmanage-
ment)
Rth es uspensio n
Rthes teerin g
Rthea vailabilit yofthe ECOs tart/sto pfunction
Rthec limat econtrol :
-thec limat econtrol setting s
-ther earw indow defroster operation period
-thep erformanc eoftheseat heatin g
Each time you start th eenginew itht he Smart -
Key or th eStart/Sto pbutton, drive program Cis
activated. Fo rfurther information about startin g
th ee ngine, see (
Ypage 133).
XPush DYNAMI CSELEC Tswitch :forwar dor
bac kuntil th edesire ddrive program is selec -
ted.
The status icon of th eselecte ddrive program
is shown in th emultifunction display.
In addition ,the curren tdrive program setting s
are displaye dbriefly in th emultimedia syste m
display.
iIn af ew countries, th eECO start/sto pfunc-
tion is deactivated at th efactory due to th e
available fue lgrade. In this case, th eECO
start/sto pfunction is no tavailable in any
drive program, regardles softhedisplay in th e
multimedia syste mdisplay. Available drive programs:
I
IndividualIndividual setting s
S+Spor tPlusParticularly sport ydrivin g
characteristics
S Spor tSporty drivin gcharacteris -
tics
C ComfortComfortable and economi-
cal drivin gcharacteristics
EEconom yParticularly economical
drivingcharacteristics
Additional information on drive programs fo r
vehicles wit hautomatic transmissio n
(
Ypage 144)
You can also chang egear yoursel fusin gthe
steerin gwhee lpaddle shifters .For further infor-
mation on th emanual drive program
(
Ypage 146).
Mercedes-AMG vehicles
General information
Selec tthe drive program usin gthe DYNAMI C
SELECT switch .
Available drive programs:
RAC E
(S ‑MODEL )Driving characteristics suit -
able fo rthe racetrac k
S+Spor tPlusParticularly sport ydrivin g
characteristics
S Spor tSporty drivin gcharacteris -
tics
C ComfortComfortable and economi-
cal drivin gcharacteristics
IIndividualIndividual setting s
Dependingonthedrive program selecte dthe
followin gvehicle characteristics will change:
Rthed rive (engin emanagement)
Rthet ransmissio nmanagemen t
RESP®
Rthes uspensio n
Rthep osition of th eexhaus tflap
Rthes teerin g
DYNAMIC SELECT switch139
Driving an dpark ing
Z

Rthe availability of the ECO start/stopfun ction
Rthe driver assistance systems
Rthe availability of gliding mode
Furtheri nformation for automatic drive program
characteristics (
Ypage 144).
Additionally, in drive program Iyo uc an config-
ur et he respectiv evehicl echaracteristics using
the multimedia system. Yo ucan fin dinforma-
tio na bout thisint he Digita lOperator' sManual.
Each tim eyou start the engine with the Smart-
Key or the Start/Stop button, drive program Cis
activated .For furthe rinformation abou tstarting
the engine ,see (
Ypage 133).
Selecting the driv eprogram
XPress DYNAMIC SELECTs witch :forwards
or backwards unti lthe desired drive program
is selected.
The status ico nofthe selected drive program
is shown in the multifunctio ndisplay .
In addition, the current drive progra msettings
ar ed isplayed brieflyinthe multimedia system
display.
Yo uc an also change gear yourself using the
steering whee lpaddl eshifters. For furthe rinfor-
matio nont he manua ldrive program
(
Ypage 146).
Additional settings
:Positio nofthe exhaust fla p(Ypage 137)
;ECO start/sto pfunctio n(Ypage 135)
=ESP®(Ypage 67)
?Suspension (Ypage 172)
APermanent activatio nofmanualgears hifting
(Ypage 146)
When yo upress buttons :-A the corre-
sponding setting is selected .The DYNAMIC
SELECT switc hsetting is overwritten.
These setting swilla lsobem aintaine difyou
change with the DYNAMIC SELECTs witch in
drive program RACE(S-MODEL), S+,Sor C.
If yo uswitch to drive program I,a llstored char-
acteristics will be accepted .This is als othe case
if yo uhavep reviously presse dbuttons :-A.
Automati ctransmission
Important safety notes
GWARNING
If the engine spee disabove the idling speed
and yo uengag etransmission position Dor R,
the vehicl ecould pull away suddenly. There is
ar iskofana ccident.
When engaging transmission position Dor R,
always firmlyd epress the brake peda land do
not simultaneously accelerate.
GWARNING
The automatic transmission switches to neu-
tralp ositionNwhen yo uswitch off the engine.
The vehicl emayrollaway. There is ariskofa n
accident.
140Automati ctransmission
Driving an dparking

After switching off the engine,alway sswitch
to parking position P.Prevent the parked vehi-
cle from rolling away by applying the parking
brake.
DIREC TSELECT lever
Overvie woftransmission positions
jPark positio nwithp arking lock
kReverse gear
iNeutral
hDrive
The DIRECT SELECTl ever is on the right of the
steering column.
The DIRECT SELECTl ever always returns to its
original position. The current transmission posi-
tion P,R, Nor Dappear sinthe transmission
positio ndisplay in the multifunctio ndisplay
(
Ypage 142).
Engagin gpark position P
!If the engine speed is too high or the vehicle
is moving, do not shift the automatic trans-
mission directl yfrom Dto R,f rom Rto Dor
directl ytoP.T he automatic transmission
could otherwise be damaged.
XPush the DIRECT SELECTl ever in the direction
of arrow P.
Engagingpark position Pautomatically
Park position Pis automaticall yengaged if:
Ryous witch off the engine using the SmartKey
and remove the SmartKey
Ryo us witch off the engine using the SmartKey
or using the Start/Stop button and open the
driver's door or front-passenger door
Rthe driver's door is opene dwhenthe vehicl eis
stationar yordriving at ver ylow speed and the
transmission is in position Dor R
Unde rcertain conditions, the automatic trans-
mission shifts automaticall ytotransmission
position Pif the HOLD functio norDISTRONIC
PLU Sisa ctivated.O bservethe informatio non
the HOLD functio n(
Ypage 170)and on
DISTRONICP LUS(Ypage 165).
Engagin grevers egearR
!Onlys hift the automatic transmission to R
when the vehicl eisstationary.
XIf the transmission is in position Dor N:p ush
the DIRECT SELECTl ever up past the first
point of resistance.
XIf the transmission is in position P:depress
the brake peda land push the DIRECT SELECT
lever up past the first point of resistance.
The ECO start/sto pfunctio nisn ot available
when revers egearise ngaged .Further informa-
tio nont he ECO start/sto pfunction
(
Ypage 135).
Shiftin gtoneutral N
GWARNING
If children ar eleftu nsupervised in the vehicle,
they could:
Ropen the doors ,thuse ndangering other
people or roa dusers.
Rget outa nd disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicl ein
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission outo f
park position P
RStartthe engine.
Automatict ransmission141
Driving andparking
Z

There isarisk of an accident and injury.
When leaving the vehicle, alwayst ake 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.
XIf the transmission is in position Dor R:p ush
the DIRECT SELECT lever up or down to the
first point of resistance.
XIf the transmission is in position P:depress
the brake pedal and push the DIRECT SELECT
lever up or down to the first point of resist-
ance.
If you switch the engine off with the transmis-
sion in position Ror D,t he automatic transmis-
sion shifts to Nautomatically.
With the SmartKey: if you then open the driv-
er's door or the front-passenger door or remove
the SmartKey from the ignition, the automatic
transmission shifts to Pautomatically.
With the Start/Stop button: if you then open
the driver's door or the front-passenger door,
the automatic transmission shifts to Pautomat-
ically.
If you want the automatic transmission to
remain in neutral N,e .g. when having the vehicle
cleaned in an automatic car wash with atowing
system:
XVehicles with the Start-Stop button:
remove the Start-Stop button from the igni-
tion lock.
XInsert the SmartKey into the ignition lock.
XAll vehicles: switch the ignition on.
XDepress the brake pedal and keep it
depressed.
XShift to neutral N.
XRelease the brake pedal.
XRelease the electric parking brake.
XSwitch off the ignition and leave the SmartKey
in the ignition lock.
Engaging drive position D
XIf the transmission is in position Ror N:p ush
the DIRECT SELECT lever down past the first
point of resistance.
XIf the transmission is in position P:depress
the brake pedal and push the DIRECT SELECT lever down past the first point of resistance.
Transmission position and drive pro-
gram display
The current transmission position and drive pro-
gram appear in the multifunction display.
:Status symbol drive program
;Transmission position
=Gear
The arrows in the transmission position display
show how and into which transmission positions
you can shift using the DIRECT SELECT lever.
If the transmission position display in the mul-
tifunction display is not working, you should pull
away carefully to check whether the desired
transmission position is engaged. For this pur-
pose, we recommend selectin gtransmission
position Dand drive program E(drive program C
in Mercedes-AMG vehicles) or S.
142Automatic transmission
Driving and parking