2015 MERCEDES-BENZ C-CLASS COUPE ignition

Starting procedureu
sing the Start/
Stop button The Start/Stop button is only available on vehi-
cles with KEYLESS-GO or the KEYLESS-GO start
function.
The Start/Stop button can be used to start the
vehicle manually without insertin gthe key into
the ignition lock. The key must be in the vehicle and the Start/Stop button must be inserted in
the ignition lock. This mode for startingt he
engine operates independently of the ECO
start/stop automatic engine start function.
You can start the engine if avalid key is in the
vehicle. Switch off the engine and always take
the key with you when leaving the vehicle, even
if you only leave it for ashort time. Pay attention
to the important safety notes.
X Depress the brake pedal and keep it
depressed.
X Press the Start/Stop button once
(Y page 145).
Vehicles with apetrol engine: the engine
starts.
Vehicles with adiesel engine: preglow is
activated and the engine starts. Pulling away
General notes G
WARNING
Vehicles with automatic transmission:
If the engine speed is above the engine idling speed and you then engage transmission
position Dor R,t he vehicle may accelerate
suddenly. There is arisk of an accident.
When engaging transmission position Dor R,
always keep the brake pedal firmly depressed
and do not depress the accelerator pedal at
the same time.
! Vehicles with manualt
ransmission:
change gear in good time and avoid spinning
the wheels. You could otherwise damage the
vehicle.
Depress the accelerator carefully when pulling
away.
The vehicle locks centrally once you have pulled
away.T he locking knobs in the doors drop down. You can open the doors from the inside at any
time.
You can also deactivate the automatic locking
feature; see the Digital Owner's Manual.
Vehicles with automatic transmission: it is
only possible to shift the transmission from posi- tion Pto the desired position if you depress the
brake pedal. If you do not depress the brake
pedal, the DIRECT SELECT lever can still be
moved but the parking lock remains engaged.
i Vehicles with automatic transmission:
upshifts take place at higher engine speeds
after acold start. This helps the catalytic con-
verter to reach its operating temperature
more quickly.
Information on automatically releasing the elec- trical parking brake (Y page 175).
Pulling away with atrailer To ensure that you do not roll backwards when
pulling away on an uphill slope, apply the electric
parking brake.
X Press and hold handle :.
The electric parking brake continues to brake
and prevent the vehicle from rolling back-
wards.
The red !indicator lamp in the instrument
cluster remains lit.
X Depress the accelerator pedal.
X As soon as the vehicle/trailer combination is
held by the driving force of the engine, release lever :.
The electric parking brake is released.
The red !indicator lamp in the instrument
cluster goes out.
For further information on the electric parking
brake, see (Y page 174).148
DrivingDriving and parking

Switching the ECO start/stop function
off/on All vehicles (except Mercedes-AMG vehi-
cles) X
To switch off: press ECO button :.
Indicator lamp ;and the èECO symbol
in the multifunction display go out.
X To switch on: press ECO button :.
Indicator lamp ;lights up. If all conditions
for automatic engine switch-of f(Y page 149)
are fulfilled, the èECO symbol is shown in
green in the multifunction display.
If not all condition sfor automatic engine
switch-of f(Y page 149) are met, the è
ECO symbol is shown in yellow in the multi-
function display.Ift his is the case, the ECO
start/stop function is not available.
If indicator lamp ;is off, the ECO start/stop
function has been deactivated manually or as
the result of amalfunction .The engine will then
not be switched off automatically when the vehi-
cle stops.
Selectin gdrive program S+deactivates the ECO
start/stop function. If you press ECO button :,
the ECO start/stop function is activated.
Mercedes-AMG vehicles X
To switch off: press ECO button :.
Indicator lamp ;and the èECO symbol
in the multifunction display go out.
X To switch on: press ECO button :.
Indicator lamp ;lights up.
If all condition sfor automatic engine switch-
off (Y page 149) are fulfilled, the èECO
symbol is shown in green in the multifunction
display.
If not all condition sfor automatic engine
switch-of f(Ypage 149) are fulfilled, the è
ECO symbol is shown in yellow.Ift his is the
case, the ECO start/stop function is not avail- able.
If indicator lamp ;is off, the ECO start/stop
function has been deactivated manually or as
the result of amalfunction .The engine will then
not be switched off automatically when the vehi- cle stops.
The ECO start/stop function is deactivated if:
R you switch to drive program RACE
(S‑MODEL), S+orS(Y page 154)
R you permanently activate manual gearshifting
(Y page 163)
If you have permanently activated manual gear- shifting and then press ECO button :,the ECO
start/stop function is activated. AMG sportse
xhaust system
(Mercedes-AMG vehicles)
You can choose between different AMG sports
exhaust system volumes using the position of
the exhaust flap.
If the ignition is switched off for less than four
hours, the previously selected settingisa ctiva-
ted when the engine is next started. If the igni-
tion is switched off for more than four hours, the
quietest settingisa ctivated when the engine is
next started. Driving
151Driving 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

C
Comfort Comfortable and economi-
cal driving characteristics
E
Economy Particularly economical
driving characteristics Additional informatio
nfor driv eprogram sfor:
R vehicle swithm anual transmission
(Y page 157)
R vehicle switha utomatic transmission
(Y page 161)
Vehicles with automatic transmission: you
can also chang egear yourself usin gthe steering
wheel gearshif tpaddles. Further informatio non
th em anual driv eprogram (Y page 163). Mercedes-AM
Gvehicles
General notes Select th
edrivep rogram usin gthe DYNAMIC
SELECT switch.
Availabl edrive programs: RACE
(S‑MODEL)
Drivin
gcharacteristic ssuit-
able for th eracetrack S+
Sport Plus Particularly sporty driving
characteristics
S
Sport Sport
ydriving characteris-
tics C
Comfort Comfortable and economi-
cal driving characteristics
I
Individual Individual settings
Dependin
gonthedriv eprogram selected, the
followin gvehicle characteristic swill change:
R thed rive( engin emanagement)
R thet ransmission management
R ESP ®
R thes uspension
R thep ositio noftheexhaust flap
R thes teering
R thea vailabilit yoftheECO start/sto pfunction
R thed river assistance systems
R thea vailabilit yofglidingmode
Further informatio nfor automatic driv eprogram
characteristic s(Ypage 161). Additionally, in driv
eprogram Iyou can config-
ure th erespectiv evehicle characteristic susing
th em ultimedia system. You can fin dinforma-
tio na bout this in th eDigital Owner' sManual.
If th eignition is switched off for less than four
hours, th epreviously selected driv eprogram is
activated when th eengineisn exts tarted. If the
ignition is switched off for mor ethanfour hours,
driv eprogram Cis activated when th eengineis
next started.
Selecting th edrive program X
Press DYNAMIC SELECT switch :forwards
or backwards until th edesired driv eprogram
is selected.
The status ico noftheselected driv eprogram
is shown in th emultifunction display.
In addition ,the curren tdriv ep rogram settings
are displayed briefly in th edisplay of th emul-
timedia system.
You can also chang egear yourself usin gthe
steering wheel gearshif tpaddles. Further infor-
mation on th emanual driv eprogram
(Y page 163). DYNAMIC SELECT switch
155Driving and parking Z

Children could also set th
evehicle in motion,
for example by:
R releasin gthe parking brake
R shiftin gthe automatic transmission out of
park position P
R starting th eengine.
Ther eisar iskofana ccidentand injury.
When leaving th evehicle ,always tak ethe key
wit hyou and loc kthe vehicle .Never leave
children unattende dinthevehicle .Always
keep th ekeyout of reac hofchildren.
X If th etransmission is in position Dor R:p ush
th eD IRECT SELECT leve rupordown to the
first poin tofresistance.
X If th etransmission is in position P:depress
th eb rak epedal and push th eDIRECT SELECT
leve rupord own to th efirst poin tofresist-
ance.
If you switch th eengineo ff wit hthe transmis-
sion in position Ror D,t heautomatic transmis-
sion shifts to Nautomatically.
Wit hthe key: if you then open th edriver' sdoor
or th efront-pa ssenger door or remove th ekey
from th eignition ,the automatic transmission
shifts to Pautomatically.
Wit hthe Start/Stop button: if you then open
th ed river' sdoor or th efront-pa ssenger door,
th ea utomatic transmission shifts to Pautomat-
ically.
If you want th eautomatic transmission to
remain in neutral N,e.g.w hen having th evehicle
cleane dinana utomatic car wash wit hatowing
system:
X Vehicles with th
eStart-Sto pbutton:
remove th eStart-Sto pbutto nfromt heigni-
tio nlock.
X Inser tthe keyintot he ignition lock.
X All vehicles: switch theignition on.
X Depress th ebrak epedal and keep it
depressed.
X Shift to neutral N.
X Release th ebrak epedal.
X Release th eelectric parking brake.
X Switch off th eignition and leave th ekeyin the
ignition lock. Engaging drive position D X
If th etransmission is in position Ror N:p ush
th eD IRECT SELECT leve rdown past th efirst
poin tofr esistance.
X If th etransmission is in position P:depress
th eb rak epedal and push th eDIRECT SELECT
leve rdown past th efirst poin tofresistance. Transmission position and drive pro-
gram display
The curren ttransmission positio nand driv epro-
gram appear in th emultifunction display. :
Status icon, driv eprogram
; Transmissio nposition
= Gear
The arrows in th etransmission positio ndisplay
sho whow and int owhichtransmission positions
you can shif tusin gthe DIRECT SELECT lever.
If th etransmission positio ndisplay in th emul-
tifunctio ndisplay is no tworking ,you should pull
away carefull ytoc heck whether th edesired
transmission positio nisengaged .For this pur-
pose ,wer ecommen dselecting transmission
position Dand driv eprogram E(drive program C
in Mercedes-AM Gvehicles) or S. Automatic transmission
159Driving and parking Z

If you mix dieself
uel with petrol, the flash
point of this fuel mixture is lowert han that of
pure dieself uel. When the engine is running,
components in the exhaust system may over-
heat unnoticed. There is arisk of fire.
Never refuel with petrol. Never add petrol to
dieself uel.
! Do not use dieseltor
efuel vehicleswith a
petrol engine. Do not switch on the ignition if you accidentally refuel with the wrong fuel.
Otherwise ,the fuel wille nter the fuel system.
Even small amounts of the wrong fuel can
resultind amage to the fuel system and the
engine. Notify aqualifieds pecialist workshop
and have the fuel tank and fuel lines drained
completely.
! Do not use petrol to refuel vehicle
swith a
diesele ngine. Do not switch on the ignition if
you accidentally refuel with the wrong fuel.
Otherwise ,fuel can enter the fuel system.
Even small amounts of the wrong fuel could
resultind amage to the fuel system and the
engine. The repairc osts are high. Notify a
qualifieds pecialist workshop and have the
fuel tank and fuel lines drained completely.
! Overfilling the fuel tank could damage the
fuel system.
! Take care not to spilla
ny fuel on painted
surfaces .You could otherwise damage the
paintwork.
! Use
afilter when adding fuel from afuel can.
The fuel lines and/or the fuel injection system could otherwise be blocked by particle sfrom
the fuel can.
If you overfill the fuel tank, some fuel may spray
out when you remove the fuel pump nozzle.
Further information on fuel and fuel quality
(Y page 371). Refuelling
General notes Observe the important safety notes
(Y
page 166).
If you unlock/lock the vehicle from the outside,
the fuel fillerf lap also unlocks/locks. The positio
nofthe8 fuel fillerc ap is dis-
played in the instrument cluster. The arrow next to the filling pump indicates the side of the vehi-
cle.
Openin gthe fuel fillerf lap :
To open the fuel fillerf lap
; To insert the fuel fillerc ap
= Tyre pressure table
? Instruction label on the fuel type to be refu-
elled
X Switch off the engine.
X Remove the key from the ignition lock.
or, on vehicle swith 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 Press the fuel fillerf lap in the direction of
arrow :.
The fuel fillerf lap swings up.
X Turn the fuel fillerc ap anti-clockwise and
remove it.
X Insert the fuel fillerc ap into the holderont he
inside of fuel fillerf lap;.
X Completely insert the fillern eck of the fuel
pump nozzle into the tank, hook in place and refuel.
X Only fill the tank until the pump nozzle
switches off.
Do not add any more fuel after the pump stops
filling for the first time. Otherwise ,fuel may leak
out.
Vehicle swithadiese lengine: the fillern eck is
designed for refuelling at dieself illing pumps. Refuelling
167Driving 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