battery MERCEDES-BENZ C-CLASS COUPE 2015 Owner's Manual

environmentally responsible
recyclin gsystem. Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to
aqualified spe-
cialist workshop or to acol-
lection point for used batter-
ies.
Replacing the battery AC
R2450 lithium batter yisrequired when
replacing the battery.
X Press apointed objec tinto recess :.
X Slide batter ycover ;backwards in the direc-
tion of the arrow.
X Inser tnew battery =with the lettering facing
upwards.
X Slide batter ycover ;in the opposite direc-
tion to the arrow on the remot econtrol until it
engages. 142
Operating thec
limatecontrol systemClimatecontrol

Problems with the auxiliary heating/ventilation
Problem
Possible causes/consequences and
M
MSolutions FAIL¨ The signal transmission between the transmitter and the vehicle is
faulty.
X
Change your position in relation to the vehicle, moving closer if
necessary. FAIL The auxiliary heating/ventilation cannot be switched on or has
switched itself off.
The starter battery is not sufficiently charged.
X Charge the starter battery. The fuel tank content is below the reserve fuel level.
X Refuel at the nearest filling station. FAIL
¯ The auxiliary heating/ventilation is malfunctioning.
X Have the auxiliary heating/ventilation checked at aqualified spe-
cialist workshop. Air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air vents. This could result in burns or frostbit ein
the immediate vicinity of the air vents. There
is ar isk of injury.
Make sure that all vehicle occupants always
maintain asufficient distance to the air out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior.
In order to ensure the direct flow of fresh air
through the air ventsi nto the vehicle interior,
please observe the following notes:
R keep the air inlet between the windscreen and
the bonnet free of blockages, such as ice,
snow or leaves
R never cover the ventsorv entilation grilles in
the vehicle interior Adjusting the air vents
Example
:
Side window demister vent
; Side air vent,l eft
= Control for left side air vent
X To open or close: turn thumbwheel=to the
left or right as far as it will go.
X To adjust the air direction: hold side air
vent ;by thumbwheel =and move it up or
down or to the left or right. Air vents
143Climatecontrol Z

Hill start assist
Hill start assist help
syou when pulling awa yfor-
wards or in reverse on an uphill gradient. It holds
the vehicl efor as hort time after you have
removed you rfoot from the brake pedal. This
gives you enoug htime to move yourf oot from
the brake peda ltothe accelerator peda land
depress it before the vehicl ebegins to roll. G
WARNING
After awhile, hills tart assist no longer holds
the vehicl eand it may roll away. There is arisk
of an accident and injury.
Therefore, quickly move yourf oot from the
brake peda ltothe accelerator pedal. Never
leave the vehicl ewhen it is held by hills tart
assist.
Hill start assist is not active if:
R you are pulling awayonal evelroad or a
downhill gradient
R on vehicles with automatic transmission, the
transmission is in position N
R the electric parking brake is applied
R ESP ®
is malfunctioning ECOs
tart/stop function
Introduction The ECO start/stop function switches the
engine off automatically if the vehicl eisstopped
under certain conditions.
When pulling awa yagain, the engine starts auto-
matically .The ECO start/stop function thereby
help syou to reduce the fuel consumption and
emissions of you rvehicle.
Important safety notes G
WARNING
If the engine is switched off automatically and you exit the vehicle, the engine is restarted
automatically.T he vehiclemay begi nmoving.
There is arisk of accident and injury.
If you wis htoexit the vehicle, alwayst urn off
the ignitio nand secure the vehicl eagainst
rolling away. General notes
:
ECO start/stop display
All vehicle s(except Mercedes-AMG vehi-
cles): the ECO start/stop function is activated
whenever you switch on the engine using the
key or the Start/Stop button.
If the è ECO symbol is show ningreen in the
multifunction display ,the ECO start/stop func-
tion switches the engine off automatically once the vehicl estops moving.
If the ECO start/stop function has been man-
ually deactivated (Y page151) or amalfunction
has caused the system to be deactivated, the
è ECO symbol is not displayed.
Mercedes-AMG vehicles: the ECO start/stop
function is only available in drive program C.
Mercedes-AMG vehicles: the ECO start/stop
function is activated whenever you switch on
the engine using the key or the Start/Stop but- ton. This is the case if:
R the ignitio nwas switched off for more than
four hour sor
R the ECO start/stop function had been activa-
ted before the engine was switched off
Automatic engine switch-off General notes
The ECO start/stop function is operational and
the è ECO symbol is displayed in green in the
multifunction display ,if:
R the indicator lamp in the ECO button is lit
green
R the outside temperature is withi nthe range
that is suitable for the system
R the engine is at normal operating temperature
R the set temperature for the vehicl einterior
has been reached
R the battery is sufficiently charged
R the system detects that the windscreen is not
misted up when the air-conditioning system isswitched on Driving
149Driving and parking Z

R
the bonnet is closed
R the driver's door is close dand the driver's
seat belt is fastened
If the conditions for automatic engine switch-off
ar en ot al lfulfilled ,the è ECO symbo lis
shown in yellow.
All of the vehicle' ssystems remai nactive when
the engine is switched off automatically.
Al lv eh icle s(exce pt Mercedes-AMG vehi-
cles): automatic engine switch-off can take
place amaximum of fou rtimes in arow (initial
switch-off ,the nt hre esubsequen tswitch-offs).
The è ECO symbo lisshown in yellow in the
multifunctio ndisplay after the engine ha sbeen
started automaticall yfor the fourth time. When
the è ECO symbo lisshown in green in the
multifunctio ndisplay ,automatic engine switch-
off is agai npossible.
Mercedes-AMG vehicles: the numberofcon-
secutive automatic engine stop sisunlimited.
Vehicle swithm anual transmission The ECO start/sto
pfunctio nswitches off the
engine automaticall yatlowspeeds.
X Brake the vehicle.
X Shift to neutral N(follow gearshift instruc-
tion :to shift to neutral N,ifnecessary).
X Releas ethe clutch pedal.
The engine is switched off automatically.
Vehicle switha utomatic transmission
If the vehicl eisbraked to astandstil lwitht he
transmission in Dor N,t he ECO start/sto pfun c-
tio ns witches off the engine automatically.
The HOLD functio ncan be activated if the
engine ha sbeens witched off automatically. It is
the nnot necessary to continue applying the
brakes durin gthe automatic stop phase. When
yo ud epress the accelerator pedal, the engine
starts automaticall yand the braking effect of
the HOLD functio nisd eactivated. Automati
cengin estart General notes
The engine is started automaticall yif:
R yous witch off the ECO start/sto pfun ctio nby
pressing the ECO button
R youd epress the accelerator pedal
R youe ngag erevers egear R
R youu nfasten your seat belt or open the driv-
er' sd oor
R the vehicl estarts to roll
R the brake syste mrequires this
R the temperatur einthe vehicl einterio rdevi-
ate sfromt he se tran ge
R the syste mdetects moisture on the wind-
screen when the air-conditioning syste mis
switched on
R the battery's charge status is too low
Vehicle swithm anual transmission
! Onl
yengag egearw hent he clutch peda lis
depressed.
The engine is started automaticall ywheny ou
depress the clutch pedal.
Vehicle switha utomatic transmission
The engine is started automaticall yif:
R yous witch to drive program S+(all vehicles
except Mercedes-AM Gvehicles)
R yous witch to drive program RACE
(S‑MO DEL),S+orS(Mercedes-AMG vehicles)
R youp ermanentl yactivate manua lgears hifting
(Y page 163 )(Me rcedes-AMG vehicles)
R in transmission position Dor N,t he brake
peda lisrelease dand the HOLD functio nisn ot
active
R yous hift fro mtransmission position P
Shiftin gthe transmission to position Pdoes not
start the engine.
If yo ushift the transmission from Rto D,t he
ECO start/sto pfunctio nisa vailable againonce
the è ECO symbo lreappears in green in the
multifunctio ndisplay. 150
DrivingDriving an
dparking

Problems with the engine
Problem
Possible causes/consequences and
M
MSolutions The engine does not
start. The HOLD function or DISTRONIC PLUS is activated.
X Deactivat ethe HOLD function (Y page 192) or DISTRONIC PLUS
(Y page 184).
X Try to start the engine again (Y page 147).The engine does not
start. The starter motor
can be heard. R
There is amalfunction in the engine electronics.
R There is amalfunction in the fuel supply.
Before attempting to start the engine again:
X Turn the key back to position 0in the ignition lock.
or X Press the Start/Stop button repeatedly until all indicator lamps in
the instrumen tcluster go out.
X Try to start the engine again (Y page 147). Avoid excessively long
and frequent attemptstos tart the engine, as this will drain the
battery.
If the engine does not start after several attempts:
X Consult aqualified specialist workshop. The engine does not
start. The starter motor
can be heard. The
reserve fuel warning
lamp is lit and the fuel
gauge display is at the
reserve level. The fuel tank is empty.
X Refuel the vehicle. 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.
X Jump-start the vehicle (Y page 345).
If the engine does not start despite attemptstoj ump-start it:
X Consult aqualified specialist workshop. The starter motor was exposed to
athermal load that was too high.
X Try to start the engine again (Y page 147).
If the engine still does not start:
X Consult aqualified specialist workshop. Vehicles with
apetrol
engine:
The engine is not running
smoothly and is misfir-
ing. There is
amalfunction in the engine electronics or in amechanical
componen tofthe engine management system.
X Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it.
X Have the cause rectified immediately at aqualified specialist work-
shop. Driving
153Driving and parking Z

Problems with the fuel and fuel tank
Problem
Possible causes/consequences and
M
MSolutions Fuel is leaking from the
vehicle.
G
WARNING
The fuel line or the fuel tank is faulty.
There is arisk of fire or explosion.
X Apply the electric parking brake.
X Switch off the engine.
X Remove the key from the ignition lock.
or, on vehicles with KEYLESS-GO start function or KEYLESS ‑GO:
X Open the driver's door.
The on-board electronics now have status 0.This is the same as the
key having been removed.
X Do not restart the engine under any circumstances.
X Consult aqualified specialist workshop. The engine does not
start. The fuel tank of
avehicle with adiesel engine has been run completely
dry.
X Refuel the vehicle with at least 5litres of diesel.
X Turn the ignition on for approximately ten seconds (Y page 145).
X Start the engine continuously for amaximum of ten seconds until it
runs smoothly.
If the engine does not start: X Turn the ignition on again for amaximum of ten seconds
(Y page 145).
X Start the engine again continuously for amaximum of ten seconds
until it runs smoothly.
If the engine does not start after three attempts:
X Consult aqualified specialist workshop. The fuel filler flap cannot
be opened. The fuel filler flap is not unlocked.
X Unlock the vehicle (Y page 81). The key battery is discharged or nearly discharged.
X Unlock the vehicle using the emergency key element (Y page 82).The fuel filler flap is unlocked, but the opening mechanism is jammed.
X Consult aqualified specialist workshop. AdBlue
®
(BlueTEC vehicleso nly)
General notes To function properly, BlueTEC exhaust gas after-
treatmen tmust be operated with the reducing
agent AdBlue ®
. On vehicles with an 8.5
lAdBlue ®
tank ,topping
up AdBlue ®
is not part of the maintenanc ework.
Under normal operatin gconditions, afull tank of
AdBlue ®
should last until the nex tservic edue
date.
When the supply of AdBlue ®
is down to approx-
imately 3.0 litres, the Refill AdBlue See Refill AdBlue See Refuelling
169Driving and parking Z

Parking up the vehicle
If you leave the vehicle parked up for longer than
four weeks, the battery may be damaged by
exhaustive discharging.
If you leave the vehicle parked up for longer than six weeks, it may suffer from lack of use.
X Contact aqualified specialist workshop and
seek advice.
i You can obtain information about trickle
chargers from aqualified specialist work-
shop. Driving tips
General driving tips
Important safety notes G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect.Y ou will require considerably
more effort to steer and brake. There is arisk
of an accident.
Do not switch off the ignition while driving.
Drive sensibly–s ave fuelObserve the following tips to save fuel:
X The tyres should always be inflated to the rec-
ommended tyre pressure.
X Remove unnecessary loads.
X Remove roof racks when they are not needed.
X Warm up the engine at low engine speeds.
X Avoid frequent acceleration or braking.
X Have all maintenance work carried out as
indicated by the service intervals in the Ser-
vice Booklet or by the service interval display.
Fuel consumption also increases when driving in
cold weather, in stop-start traffic, on short jour- neys and in hilly terrain. ECO display
The ECO display shows you how economical
your driving style is. The ECO display assists you
in achieving the most economical driving style
for the selected settings and prevailing condi-
tions. Consumption can be significantly influ-
enced by your driving style. :
Acceleration
; Coasting
= Constant
? Additional range achieved
Range ?is shown under Bonus Bonusfr. fr.start
start and
represents the additional range achieved since
the beginning of the journey as aresult of an
adapted driving style.
If the fuel level has dropped into the reserve
range, the Reserve fuel Reserve fuel display message is
shown instead of range ?in the multifunction
display.Ina ddition, the 8warning lamp in
the instrumen tcluster lights up (Y page 290).176
Driving tipsDriving and parking

Stopping
G
WARNING
When leaving the vehicle, even if it is braked
only by DISTRONIC PLUS, it could roll away if:
R there is amalfunction in the system or in
the voltage supply.
R DISTRONIC PLUS has been deactivated
with the cruise control lever, e.g. by avehi-
cle occupant or from outside the vehicle.
R the electrical system in the engine com-
partment,t he battery or the fuses have
been tampered with.
R the battery is disconnected.
R the accelerator pedal has been depressed,
e.g. by avehicle occupant.
There is arisk of an accident.
If you wish to exit the vehicle, always turn off
DISTRONIC PLUS and secure the vehicle
against rolling away.
Further information on deactivating DISTRONIC PLUS (Y page 190).
If DISTRONIC PLUS detectst hat the vehicle in
front is stopping, it brakes your vehicle until it is stationary.
Once your vehicle is stationary, it remains sta-
tionary and you do not need to depress the
brake.
i After
ashort period, the vehicle is secured
by the electric parking brake, thus relieving
the service brake.
i Depending on the specified minimum dis-
tance, your vehicle will come to astandstill at
as ufficient distance behind the vehicle in
front.T he specified minimum distance is set
using the control on the cruise control lever.
When DISTRONIC PLUS is activated, the trans-
mission is shifted automatically to position Pif:
R the driver's seat belt is not fastened and the
driver's door is open
R the engine is switched off, unless it is auto-
matically switched off by the ECO start/stop
function The electric parking brake secures the vehicle
automatically if DISTRONIC PLUS is activated
when the vehicle is stationary and:
R as ystem fault occurs
R the power supply is insufficient
If af ault occurs, the transmission may also shift
into position Pautomatically.
Setting aspeed X
Press the cruise control lever up :for a
higher speed or down Afor alower speed.
X Keep the cruise control lever pressed until the
desired speed is reached.
X Release the cruise control lever.
The new speed is stored. DISTRONIC PLUS is
activated and adjusts the vehicle's speed to
the new speed stored.
X To adjust the set speed in
1km/h incre-
ments: briefly press the cruise control lever
up : or down Ato the pressure point.
The last stored speed increases or decreases
in 1k m/h increments.
X To adjust the set speed in 10 km/h incre-
ments: briefly press the cruise control lever
up : or down Abeyond the pressure point.
The last stored speed increases or decreases in 10 km/h increments.
i If you accelerate to overtake, DISTRONIC
PLUS adjusts the vehicle's speed to the last
speed stored after you have finished overtak-
ing.
Setting the specified minimum distance You can set the specified minimum distance for
DISTRONIC PLUS by varying the time span
between one and two seconds. With this func-
tion, you can set the minimum distance that
DISTRONIC PLUS maintains to the vehicle in
front,d ependent on vehicle speed. You can see
this distance in the multifunction display
(Y page 189).
i Make sure that you maintain the minimum
distance to the vehicle in front as required by law. Adjust the distance to the vehicle in front
if necessary. 188
Driving systemsDriving and parking

Important safety notes
G
WARNING
When leaving th evehicle, it can still rol laway
despit ebein gbraked by th eHOLDfunction if:
R there is amalfunction in th esystem or in
th ev oltag esupply
R theH OLDf unction is deactivated by the
accelerato rpedal bein gdepressed, e.g. by
av ehicl eoccupant
R thee lectrical system in th eenginec om-
partment, th ebattery or th efuses are tam-
pered with
R theb attery is disconnected
Ther eisar iskofana ccident.
Before leaving th evehicle, always deactivate
th eH OLDf unction and secure th evehicle
from rollin gaway.
! When DISTRONI
CPLUSort heHOLD func-
tion is activated, th evehicl ebrakes automat-
ically in certain situations.
To avoi ddamag etothevehicle, deactivate
DISTRONI CPLUSa nd th eHOLDf unction in
th ef ollowin gorsimilar situations:
R when towin gaway
R in ac ar wash
Deactivating th eHOLDf unction (Y page 193).
Activation conditions You can activat
ethe HOLD function if all of the
followin gconditi onsa re fulfilled:
R thev ehicl eiss tationary
R thee ngineisr unnin gorifith as been auto-
matically switched off by th eECO start/stop
function
R thed river' sdoor is closed or your seat belt is
fastened
R thee lectric parking brak eisreleased
R vehicles wit hautomatic transmission :the
transmission is in position D,Ror N
R DISTRONI CPLUSisd eactivated Activating th
eHOLD function X
Mak esuret hatthe activation condition sare
met.
X Depress th ebrak epedal.
X Quickly depress th ebrak epedal further
until :appear sinthemultifunction display.
The HOLD function is activated. You can
release th ebrak epedal.
i If depressing th
ebrak epedal th efirst time
does no tactivat ethe HOLD function ,wait
briefly and then tr yagain.
Deactivating th eHOLD function The HOLD function is deactivated automatically
if:
R you accelerate .Onvehicles wit hautomatic
transmission :onlyw hen th etransmission is in
position Dor R.
R thet ransmission is in position Pon vehicles
wit ha utomatic transmission.
R you depress th ebrak epedal again wit hacer-
tai na moun tofpressur euntil display :dis-
appear sfromt hemultifunction display.
R you secure th evehicl eusin gthe electric park-
ing brake.
R you activat eDISTR ONICPLUS.
i Afte
ras hort period, th evehicl eiss ecured
by th eelectric parking brake, thus relieving
th es ervic ebrake.
Vehicles with automatic transmission Driving systems
193Driving and parking Z

Active Parking Assist will onl
ydetect parking
spaces:
R parallel or at right angle stothe direction of
travel
R tha tare parallel to the direction of travel and
ar eatl east1.5mw ide
R tha tare parallel to the direction of travel and
at leas t1.0ml onger tha nyourv ehicle
R tha tare at right angle stothe direction of
travel and at leas t1.0mw ider than your vehi-
cle
i Not
ethat Activ eParking Assist cannot
measure the size of aparking space if it is at
right angles to the direction of travel. You will need to judge whether your vehicle will fit in
the parking space.
When drivin gatspeeds below 30 km/h, you will
see parking symbol ;asas tatus indicator in
the instrumen tcluster. When aparking space
has been detected, an arrow towards the right or the left also appears. Activ eParking Assist only
displays parking spaces on the front-passenger
side as standard. Parking spaces on the driver's side are displayed as soon as the turn signal onthe driver's side is activated. When parking on
the driver's side, this must remain activated
until you confirm the use of Activ eParking Assist
by pressing the abutton on the multifunc-
tion steerin gwheel. The system automatically
determines whether the parking space is paral-
lel or at right angles to the direction of travel.
Ap arking space is displayed while you are driv-
ing past it, and until you are approximately 15 m
away fro mit.
Parking G
WARNING
If you leave the vehicle when it is only being
braked by Activ eParking Assist it could roll
away if:
R there is amalfunction in the system or in
the voltage supply.
R the electrical system in the engin ecom-
partment, the battery or the fuses are tam-
pered with.
R the battery is disconnected.
R the vehicle is accelerated, e.g. by avehicle
occupant. There is
arisk of an accident.
Before leavin gthe vehicle, always secur eit
against rollin gaway.
i Vehicles with automatic transmission:if
PARKTRONIC detect sobstacles, Activ ePark-
ing Assist brakes automatically durin gthe
parking process. You are responsible for brak- ing in good time.
X Stop the vehicle when the parking symbol
shows the desired parking space in the instru-
men tcluster.
X Vehicles with manua ltra nsmission: shift
to reverse gear.
Vehicles with automatic transmission:
shift int oposition R.
The Start Start Park ParkAssist?
Assist? Yes:
Yes:OK
OKNo:
No:%
message appears in the multifunction display.
X To cancel th eprocedure: press the %
button on the multifunction steerin gwheel or
pull away.
or
X To park using Active Parking Assist: press
the a button on the multifunction steering
wheel.
The Park Assist active Accelerate Park Assist active Accelerate
and brake
and brake Observe surroundings
Observe surroundings mes-
sage appears in the multifunction display.
X Release the multifunction steerin gwheel.
X Revers ethe vehicle, being ready to brak eat
all times. When reversing, drive at aspeed
below 10 km/h .Otherwise, Activ eParking
Assist will be cancelled.
Vehicles with automatic transmission:
Activ eParking Assist brakes the vehicle to a
standstill when the vehicle approaches the
rear border of the parking space.
Manoeuvrin gmay be require dintightparking
spaces.
X Vehicles with manua ltra nsmission: stop
as soon as PARKTRONIC sound sthe contin-
uous warnin gtone, if not before.
Manoeuvrin gmay be require dintightparking
spaces.
Vehicles with automatic transmission: the
Park Assist active Select D Park Assist active Select D Observe
Observe
surroundings
surroundings message appears in the multi-
function display.
Vehicles with manua ltra nsmission: the
Park Park Assist
Assist active
activeEngage
Engageforward
forward gear
gear Driving systems
203Driving and parking Z