2015 MERCEDES-BENZ C-CLASS COUPE fuel

!
Operating the auxiliary heating/ventilation
draws on the vehicle battery. After you have
heated or ventilated the vehicle amaximum of
two times, drive for alonger distance.
Switch the auxiliary heating on regularly once a
month for aboutt en minutes.
The auxiliary heating heats the air in the vehicle interior to the set temperature. This occurs with-out using the heat of the running engine. The
auxiliary heating is operated directly using the
vehicle's fuel. For this reason, the tank content
must be at least at reserve fuel level to ensure
that the auxiliary heating functions.
The auxiliary heating or auxiliary ventilation
automaticallya djusts to changes in tempera-
ture and weather conditions. For this reason,
the auxiliary heating could switch from ventila-
tion mode to heating mode or from heating
mode to ventilation mode.
The auxiliary heating switches off when the
engine is switched off. The auxiliary ventilation
is not active if the engine is running.
The auxiliary heating or auxiliary ventilation
switches off automaticallya fter 50 minutes.
This time limit can be altered. To do this, visit a
qualified specialist workshop.
You cannot use the auxiliary ventilation to cool
the vehicle interior to atemperature lower than
the outside temperature.
Before switchingon X
Turn the key to position 2in the ignition lock
(Y page 145).
X Set the desired temperature using the w
rocker switch on the front control unit.
If you do not alter the temperature before
switching on the auxiliary heating or auxiliary
ventilation, the last temperature setting will be
adopted.
Auxiliary heating or auxiliary ventilation can also
be switched on if the manuallys et climate con-
trol is activated. Optimum comfort is attained
when the system is set to automatic mode. Set the temperature to 22 †.
You can switch the auxiliary heating or auxiliary
ventilation on or off:
R using the rocker switch on the centrec onsole
(Y page 139)
R using the remote control (Y page 140)The remote control can be used to set up to
three departure times, one of which may be pre-
selected.
Switchingt he auxiliary heating/venti-
lation on/off using the centre console
rocker switch General notes
The colours of the indicator lamps in rocker
switch
:have the following meanings:
R blue: auxiliary ventilation is switched on
R red: auxiliary heating is activated
R yellow: departure time is preselected
Activating/deactivating
X To switch on auxiliary heating or auxiliary
ventilation: press rocker switch :up or
down.
The red or the blue indicator lamp above
rocker switch :lights up.
X To set the temperature: switch on auxiliary
heating or auxiliary ventilation.
The multimedia system is activated for
approximately one minute.
X Set the desired temperature using the multi-
media system (see the separate operating
instructions).
X To switch off auxiliary heating or auxiliary
ventilation:
press rocker switch :up or
down.
The red or the blue indicator lamp above
rocker switch :goes out. Operating the climatec
ontrol system
139Climatecontrol Z

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

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

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
the steering
R the availability of the ECO start/sto pfun ction
R the climate control
Informatio nabout configurin gdrive program I
with the multimedia syste mcan be found in the
Digita lOwn er'sM anual.
i To permanentl
yshift the gear smanuall yin
drive program Iusing the steering whee lpad-
dles ,select theM(manual) setting for the
drive.
Drive program S+ (Sport Plus)
Drive program S+is characterise dbythe fol-
lowing:
R the vehicl eexhibits particularly sporty driving
characteristics.
R the vehicl epulling away in first gear.
R the automatic transmission shiftin guplater.
As aresul toft he later automatic transmission
shift points ,the fuel consumption possibly
being higher.
R the suspensio nexhibits particularly firm
springing and damping setting s(vehicle swith
AIRMATIC).
R the ECO start/sto pfunctio nisn ot available.
Drive program S(Sport)
Drive program Sis characterise dbythe follow-
ing:
R the vehicl eexhibits sporty drivin gcharacter-
istics.
R the vehicl epulling away in first gear.
R the automatic transmission shiftin guplater.
As aresul toft he later automatic transmission
shift points ,the fuel consumption possibly
being higher.
R the suspensio nexhibits fir mspringing and
damping setting s(vehicle swithA IRMATIC).
Drive program C(Comfort)
Drive program Cis characterise dbythe follow-
ing:
R the vehicl eexhibits comfortable, economical
drivin gcharacteristics.
R the vehicl epulling away mor egently in
forward and revers egears unles sthe accel-
erator peda lisdepresse dfully. R
the vehicl ehasimproved drivin gstability, for
exampl eonslipperyroads urfaces.
R optimal fuel consumption resulting fro mthe
automatic transmission shiftin gupsooner.
Th ev ehicl eisd riven in the lo wengine speed
range and the wheels ar elesslikel ytos pin.
Drive program E(Econom y)
Drive program Eis characterised by the follow-
ing:
R the vehicl eexhibits comfortable, economical
drivin gcharacteristics.
R the vehicl epulling away mor egently in
forward and revers egears unles sthe accel-
erator peda lisdepresse dfully.
R the vehicl ehasimproved drivin gstability, for
exampl eonslipperyroads urfaces.
R optimal fuel consumption resulting fro mthe
automatic transmission shiftin gupsooner.
Th ev ehicl eisd riven in the lo wengine speed
range and the wheels ar elesslikel ytos pin.
R durin gdeceleration, the engine is disconnec-
ted fro mthe drive train. Th evehicl euses
kinetic energy and consumes less fuel (over-
ru nm ode).
R the performance of the air-conditioning and
heating systems is reduced.
Mercedes-AMG vehicles Drive program RAC
E(S‑MODEL)
Drive program RACEis characterised by the fol-
lowing:
R the vehicl eexhibits drivin gcharacteristics
suitabl efor the racetrack.
R allv ehicl esystems ar esetfor maximum
sportiness.
R the gearshift recommendation gives you
information for slowly warming up the drive
assemblie sand for adopting afuel-e fficient
drivin gstyle (Y page 163). Yo ucan follo wthe
gearshift recommendations at al ltimes and
change gear accordingly using the steering
whee lgears hift paddles. On the basi softhe
gearshift recommendation, using the steering whee lgears hift paddles, yo ucan optimis ethe
drive train and engine operating mod eatany
time.
R if yo uhaves elect edagearm anually, thi swill
be maintaine duntilthe vehicl espeed signifi-
cantl yincrease sordecreases. 162
Automati
ctransmissionDriving an dparking

R
the vehicl epulling away in first gear.
R the automatic transmission shiftin guplater.
As aresul toft he later automatic transmission
shift points ,the fuel consumption possibly
being higher.
R the suspensio nexhibits particularly firm
springing and damping setting s(vehicle swith
AIRMATIC).
R gliding mod eisnot available.
R the ECO start/sto pfunctio nisn ot available.
Drive program S+ (Sport Plus) Drive program S+is characterise dbythe fol-
lowing:
R the vehicl eexhibits particularly sporty driving
characteristics.
R the vehicl epulling away in first gear.
R the automatic transmission shiftin guplater.
As aresul toft he later automatic transmission
shift points ,the fuel consumption possibly
being higher.
R the suspensio nexhibits particularly firm
springing and damping setting s(vehicle swith
AIRMATIC).
R gliding mod eisnot available.
R the ECO start/sto pfunctio nisn ot available.
Drive program S(Sport)
Drive program Sis characterise dbythe follow-
ing:
R the vehicl eexhibits sporty drivin gcharacter-
istics.
R the vehicl epulling away in first gear.
R the automatic transmission shiftin guplater.
As aresul toft he later automatic transmission
shift points ,the fuel consumption possibly
being higher.
R the suspensio nexhibits fir mspringing and
damping setting s(vehicle swithA IRMATIC).
R gliding mod eisnot available.
R the ECO start/sto pfunctio nisn ot available.
Drive program C(Comfort)
Drive program Cis characterise dbythe follow-
ing:
R the vehicl eexhibits comfortable, economical
drivin gcharacteristics.
R the vehicl epulling away mor egently in
forward and revers egears unles sthe accel-
erator peda lisdepresse dfully. R
the vehicl ehasimproved drivin gstability, for
exampl eonslipperyroads urfaces.
R optimal fuel consumption resulting fro mthe
automatic transmission shiftin gupsooner.
Th ev ehicl eisd riven in the lo wengine speed
range and the wheels ar elesslikel ytos pin.
R gliding mod eisavailable.
R the ECO start/sto pfunctio nisa vailable.
Drive program I(Individual)
In drive program Ithe following propertie softhe
drive progra mcan be selected:
R the drive (engine management)
R the transmission management
R ESP ®
(Y page 71)
R the suspension
R activatio nofthe exhaust flap
Informatio nabout configurin gdrive program I
with the multimedia syste mcan be found in the
Digita lOwn er'sM anual.
i To permanentl
yshift the gear smanuall yin
drive program Iusing the steering whee lpad-
dles ,select theM(manual) setting for the
transmission. Manual gearshifting
General notes Yo
uc an change gear yourself using the steering
whee lgears hift paddles. Th etransmission must
be in position D.
Depending on which gearshift paddle is pulled,
the automatic transmission immediatel yshifts
into the next gear up or down, if permitted.
Mercedes-AMG vehicles: to usemanualshift-
ing ,you have two options:
R temporary setting
R permanent setting
If yo uactivate manua lgears hifting, the multi-
functio ndisplay will sho wthe current gear
instea doftransmission position D.
If manua lgears hiftin gisd eactivated ,the gears
will be selected automatically. Automati
ctransmission
163Driving andparking Z

Temporary setting
X
To activate: shift the DIRECT SELEC Tlev er to
position D.
X Pull steerin gwheel gearshift paddle :or;.
Temporary setting will be active for acertain
amount of time .Under certain conditions the
minimu mamount of time is extended, e.g .inthe
cas eofl atera lacceleration, durin ganoverrun
phas eorw hend rivin gons teepterrain.
X To deactivate: pull steeringwheel gearshift
paddle ;and hol ditinp lace.
or X Use the DIRECT SELEC Tlever to shift the
transmission position.
or X Use the DYNAMIC SELEC Tswitch to change
the drive program.
Permanent settin g(Me rcedes-AMG
vehicles) X
To activate: shift the DIRECT SELEC Tlev er to
position D.
X Press button :.
Indicato rlamp ;lights up. X
To deactivate: press button:.
or X If positio nD(automatic transmission) is
selecte dfor the transmission in drive pro-
gram I:shift to drive program Iwith the
DYNAMIC SELEC Tswitch.
Indicato rlamp ;goes out.
Shiftin ggears !
Mercedes-AMG vehicles:
the automatic
transmission does not shift up automatically
eve nw hent he engine limiting spee dfor the
current gear is reached. When the engine lim- iting spee disreached, the fuel supply is cut to
prevent the engine fro moverrevving. Always
make sure tha tthe engine spee ddoesn ot
reach the red area of the rev counter. There is
otherwis eariskofe ngine damage. X
To shift up: pull steeringwheel gearshift pad-
dle ;.
The automatic transmission shifts up to the
next gear.
Al lv eh icle s(exce pt Mercedes-AMG vehi-
cles): if the maximum engine spee donthe
currentl yengaged gear is reache dand you
continue to accelerate, the automatic trans-
mission automaticall yshifts up in order to
prevent engine damage.
X To shift down: pull steeringwheel gearshift
paddle :.
The automatic transmission shifts down to
the next gear.
Automatic downshifting occurs when coast-
ing.
If the engine exceed sthe maximum engine
spee dwhens hifting down, the automatic
transmission protects against engine damage
by not shifting down. 164
Automati
ctransmissionDriving an dparking