2015 MERCEDES-BENZ C-CLASS COUPE check engine

Problems with the windscreen wipers
Problem
Possible causes/consequences and
M
MSolutions The windscreen wipers
are jammed. Leaves or snow, for example, may be obstructing the windscreen
wiper movement
.The wiper motor has been deactivated.
X For safety reasons, you should remove the key from the ignition
lock.
or X Switch off the engine using the Start/Stop button and open the
driver's door.
X Remove the cause of the obstruction.
X Switch the windscreen wipers back on. The windscreen wipers
fail completely. The windscreen wiper drive is malfunctioning.
X Select another wiper speed on the combination switch.
X Have the windscreen wipers checked at aqualified specialist work-
shop. The windscreen washer
fluid from the spray noz-
zles no longer hits the
centre of the wind-
screen. The spray nozzles are misaligned.
X Have the spray nozzles adjusted at aqualified specialist workshop. 128
Windscreen wipersLights and windscreen wipers

Starting the vehicle
Important safety notes G
WARNING
If children are left unsupervised in the vehicle, they could:
R open doors, thereby endangering other per-
sons or road users
R get out and be struck by oncomingt raffic
R operate vehicle equipment and become
trapped, for example
In addition, the children could also set the
vehicle in motion, for example, if they:
R release the parking brake
R shift the automatic transmission out of park
position Porshift manual transmission into
neutral
R start the engine
There is arisk of an accident and injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave
children and animals unattended in the vehi-
cle. Keep the keys out of the reach of children. G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There is ar isk of fatal injury. Therefore never leave
the engine running in enclosed spaces with-
out sufficient ventilation. G
WARNING
Flammable materials introduced through
environmental influence or by animals can
ignite if in contact with the exhaust system or parts of the engine that heat up. There is arisk
of fire.
Carry out regular checkstom ake sure that
there are no flammable foreign materials in
the engine compartmen torinthe exhaust
system. General notes Vehicles with
apetrol engine: the catalytic
converter is preheated for up to 30 seconds
after acold start. The sound of the engine may
change during this time.
Manual transmission X
Depress the brake pedal and keep it
depressed.
X Fully depress the clutch pedal.
X Shift to neutral N.
Automatic transmission X
Shift the transmission to position P
(Y page 158).
The transmission position indicator in the
multifunction display shows P(Y page 159).
i You can start the engine in transmission
position Pand N.
Starting procedurew ith the key To start the engine using the key instead of the
Start/Stop button, pull the Start/Stop button
out of the ignition lock.
X To startad iesel engine:t urn the key to
position 2in the ignition lock (Y page 145).
The % preglow indicator lamp in the instru-
ment cluster lights up.
X Turn the key to position 3in the ignition lock
and release it as soon as the engine is running
(Y page 145).
i Vehicles with
adiesel engine: you can
start the engine without preglow if the engine
is warm.
If the engine will not start:
X Remove the key from the ignition lock.
X Reinsert the key into the ignition lock after
waiting for ashort period.
X Turn the key to position 2in the ignition lock
(Y page 145).
The indicator lamps in the instrumen tcluster
light up (Y page 285).
X Turn the key to position 3(Y page 145) in the
ignition lock and release it as soon as the
engine is running. Driving
147Driving 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

Transmission positions
B Park position
Thi sprevents the vehicl efromr olling
away when stopped.
Onl yshift the transmission into posi-
tion Pwhen the vehicl eisstationary
(Y page 158). The parkin glock
shoul dnot be used as abrake when
parking. In order to secur ethe vehi-
cle ,alway sapply the electri cparking
brake in additio ntothe parkin gloc k.
Park position Pis automatically
engaged if:
R yous witch off the engine using the
key and remove the key
R yous witch off the engine using the
key or using the Start/Stop button
and open the driver's door or front- passenge rdoor
R youo pent he driver's door when
the vehicl eisstationar yordriving
at ver ylow spee dand the trans-
mission is in position Dor R
In the event of amalfunctio nofthe
vehicle's electronics ,the transmis-
sion ma yloc kinp ositionP.H avet he
vehicl eelectronics checked immedi-
ately at aquali fied specialis twork-
shop. C Revers
egear
Onl yshift the transmission into posi-
tion Rwhen the vehicl eisstationary. A Neutral
Do not shift the transmission to
N
whil edriving. Otherwise, the auto-
matic transmission could be dam-
aged.
No powe ristransmitted fro mthe
engine to the drive wheels.
Releasing the brake peda lwilla llow
yo utom ovet he vehicl efreely, e.g .to
push it or tow it.
If ESP ®
is deactivated or faulty: shift
the transmission to position Nif the
vehicl eisind angerofs kidding ,e.g.
on icy roads.
If yo uswitch the engine off with the
transmission in position Ror D,t he
automatic transmission shifts to N
automatically.
! Rolling in neutral
Ncan lead to
damage to the transmission. 7 Drive
The automatic transmission changes
gear automatically. All forward gears
ar ea vailable. Driving tips
Changin ggear The automatic transmission shifts to the indi-
vidua
lgears automaticall ywhenitisint rans-
mission position D.Gearshifting is determined
by:
R the selecte ddrive program
R the positio nofthe accelerator pedal
R the roa dspeed
Accelerator peda lposition Your style of drivin
ginfluences how the auto-
matic transmission shifts gear:
R little throttle :early upshifts
R mor ethrottle :lat eu pshifts
Double-clutc hfunction When shifting down, the double-clutch function
is active regardless of the currentl yselected
drive program. The double-clutch function 160
Automati
ctransmissionDriving an dparking

Problems with the transmission
Problem
Possible causes/consequences and
M
MSolutions The transmission has
problems shifting gear. The transmission is losing oil.
X Have the transmission checked at aqualified specialist workshop
immediately. The acceleration ability
is deteriorating.
The transmission no lon-
ger changes gear. The transmission is in emergency mode.
It is only possible to shift into
secondgear and reverse gear.
X Stop.
X Shift the transmission to position P.
X Switch off the engine.
X Wait at least ten seconds before restarting the engine.
X Shift the transmission to position Dor R.
If D is selected, the transmission shifts into secondgear; ifRis
selected, the transmission shifts into reverse gear.
X Have the transmission checked at aqualified specialist workshop
immediately. Refuelling
Important safety notes
G
WARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is arisk of fire and explo-
sion.
You must avoid fire, naked flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating before refuelling. G
WARNING
Fuels are poisonous and hazardous to health. There is adanger of injury.
Do not swallow fuel or let it come into contact
with skin, eyes or clothing. Do not inhale fuel
vapours. Keep fuels out of the reach of chil-
dren. If you or others come into contact with fuel,
observe the following:
R Wash the fuel off any affected areas of skin
with water and soap immediately.
R If you get fuel in your eyes, rinse them thor-
oughly with clean water immediately. Seek
immediate medical attention.
R If fuel is swallowed, seek immediate medi-
cal attention. Do not induce vomiting.
R Change any clothing that has come into
contact with fuel immediately. G
WARNING
Electrostatic charge can cause sparks and
thereby ignite fuel vapours. There is arisk of
fire and explosion.
Always touch the vehicle body before opening the fuel filler flap or touching the fuel pump
nozzle. This discharges any electrostatic
charge that may have built up.
Do not get into the vehicle again during the refu-
elling process. Otherwise, electrostatic charge
could build up again. G
WARNING
Vehicles with adiesel engine: 166
RefuellingDriving and parking

Electric parking brake
General notes G
WARNING
If you leave childre nunattende dinthevehi-
cle ,the ym ay be able to set th evehicle in
motion if, for example, they:
R release th eparking brake
R shif tthe automatic transmission out of park
position Por shif tmanual transmission into
neutral
R start th eengine
In addition ,the ym ay operate vehicle equip-
men tand become trapped. Ther eisarisk of
an acciden tand injury.
When leavin gthe vehicle ,always tak ethe key
with you and loc kthe vehicle .Never leave
childre nunattende dinthevehicle.
The function of th eelectric parking brak eis
dependen tontheon-board voltage. If th eon-
boar dvoltage is low or if there is amalfunction
in th esystem, it may no tbepossible to apply the
released parking brake.
X If this is th ecase, only park th evehicle on
leve lground and secure it to prevent it from
rolling away.
X Vehicles with automatic transmission:
shif tthe automatic transmission to position
P .
X Vehicles with manua
ltra nsmission:
engage first gear.
It may no tbepossible to release an applied
parking brak eiftheon-board voltage is low or if
there is amalfunctio ninthesystem. Contac ta
qualified specialist workshop.
The electric parking brak ecarries out afunction
check at regular intervals when th eengine is
switched off .Noises that occur are normal. Applying or releasin
gmanually X
To apply: push handle :.
When th eelectric parking brak eisapplied,
th er ed ! indicator lamp light supinthe
instrumen tcluster.
The electric parking brak ecan also be applied
when th ekeyis removed.
X To release: pull handle:.
The red !indicator lamp in th einstrument
cluste rgoes out.
The electric parking brak ecan only be released:
R when th ekeyis in position 1or 2in th eigni-
tio nlock( Ypage 145) or
R if th eignition was switched on usin gthe
Start/Sto pbutton
Applying automatically (vehicles with
automatic transmission) The electric parking brak
eisautomatically
applied when th etransmission is in position P
and:
R thee ngine is switched off or
R thed river is no twearin gaseat belt and the
driver' sdoor is opened
To prevent th eelectric parking brak efromb eing
automaticall yapplied ,pull handle :.
The electric parking brak eisalso applied auto-
maticall yif:
R DISTRONIC PLU Sbrings th evehicle to a
standstil lor
R theH OLDf unction is keepin gthe vehicle sta-
tionary
R Activ eParking Assist is keepin gthe vehicle
stationary 174
ParkingDriving and parking

High-performance and ceramic brakes
(Mercedes-AMG vehicles) The AMG brake systems are designed for heavy
loads. This may lea dtonoise when braking. This
is dependent on:
R speed
R braking force
R environmental conditions, such as tempera-
ture and humidity
The wea rofindividua lbrake system compo-
nents such as the brake pads/linings or brake
discs depends on individuald riving style and
operating conditions.
For this reason, it is impossible to state amile-
age (service life )that wil lbevalidu nder all cir-
cumstances. An aggressive driving style will
lea dtoh igh wear. You can obtai nmore infor-
mation on this from aqualified specialist work-
shop.
Brake pads/linings and discs that are either new or have been replaced only achieve optimum
braking effect after severa lhundre dkilometres
of driving. Compensate for the reduced braking
effect by applying greater force to the brake
pedal. Always be aware of this and adapt your
driving and braking accordingly during the run-
ning-in period.
Excessive heavy braking results in correspond-
ingly high brake wear. Observe the brake wear
warning lamp in the instrument cluste rand note
any brake status messages in the multifunction
display .Ifyou regularl ydrive at high speeds, it is
particularly important to have the brake system
checked and maintained regularly. Driving on wetr
oads
Aquaplaning If wate
rhas accumulated to acertain depth on
the road surface, there is adange rofa quaplan-
ing occurring, even if:
R you are driving at low speeds
R the tyres have adequate tread depth
For this reason, drive in the following manner in
the event of heavy rain or in conditions in which aquaplaning can occur:
R lower you rspeed
R avoi dtyre ruts R
avoi dsudden steering movements
R brake carefully
Driving on flooded roads !
Bear in mind that vehicles travelling in front
or in the opposite direction create waves. This may caus ethe maximu mpermissible water
depth to be exceeded.
These notes must be observed under all cir-
cumstances. You coul dotherwise damage
the engine, the electronics or the transmis-
sion.
If you must drive on stretches of road on which
wate rhas collected, please bea rinmind that:
R in the case of standing water, the wate rlevel
must be no higher than the lower edge of the vehicl ebody
R you should drive no faster than walking pace Winter driving
G
WARNING
If you shift downonas lippery road surface in
an attempt to increas ethe engine's braking
effect, the drive wheels coul dlose their grip.
This increases the risk of skidding and having
an accident.
Do not shift dow nfor additiona lengine brak-
ing on aslippery road surface. G
DANGER
If the exhaust pipeisb locked or adequate
ventilation is not possible,p oisonous gases
such as carbon monoxide (CO )may enter the
vehicle. This is the case, e.g. if the vehicle
become strappe dinsnow. There is arisk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipea nd area
around the vehicl eare clea rofsnow. To
ensure an adequate supply of fresh air, open a windo wont he side of the vehicl ethat is not
facing into the wind.
Have you rvehicl ewinterproofed at aqualified
specialist worksho patthe onset of winter. Driving tips
179Driving and parking Z

Variable SPEEDTRONIC
General notes
:
To stor ethe current speed or ahighe rspeed
; LIM indicator lamp
= To stor ethe current speed or calling up the
last stored speed
? To stor ethe current speed or alower speed
A To switch between cruis econtro lor
DISTRONIC PLU Sand variabl eSPEED-
TRONIC
B To deactivate variabl eSPEEDTRONIC
With the cruis econtro llev er, yo ucan operate
cruis econtro lorDISTRONIC PLU Sand variable
SPEEDTRONIC.
The LIM indicator lamp on the cruis econtrol
lever indicates which system yo uhaves elected:
R LIMi ndicator lamp off: cruisecontro lor
DISTRONIC PLU Sisselected
R LIMi ndicator lamp on: variableSPEED-
TRONIC is selected
Yo uc an us ethe cruis econtro llev er to limit the
speed to any speed above 30 km/h whil ethe
engine is running.
Selecting variabl eSPEEDTRONIC
If ther eisac hange of drivers ,adviset he new
driver of the limit speed stored.
X Check whethe rLIM indicator lamp ;is on.
If it is on, variabl eSPEEDTRONIC is already
selected.
If it is not, press the cruis econtro llev er in the
direction of arrow A.
LIM indicator lamp ;in the cruis econtrol
lever is on. Variabl eSPEEDTRONIC is selec-
ted. Storin
gthe current speed
Yo uc an us ethe cruis econtro llev er to limit the
speed to any speed above 30 km/h whil ethe
engine is running.
X Briefly press the cruis econtro llev er up :or
down ?.
The current speed is stored and shown in the
multifunctio ndisplay.
Speedomete rwiths egments: the seg-
ments light up from the start of the scale up to
the stored speed limit.
Storin gthe current speed or calling up the
las tstored speed G
WARNING
If yo ucallupt he stored speed and it is lower
tha nthe current speed ,the vehicl edeceler-
ates. If yo udonot know the stored speed ,the
vehicl ecould decelerate unexpectedly .There
is ar iskofana ccident.
Pa ya ttentio ntothe roa dand traffic condi-
tions before calling up the stored speed .Ifyou
do not know the stored speed ,stor ethe
desired speed again.
X Briefly pull the cruis econtro llev er towards
you =.
Settin gaspeed
X To adjust the se
tspeed in 10 km/h incre-
ments: brieflypress the cruis econtro llev er
up : beyond the pressure point for ahigher
speed ,ordown?for alower speed.
or X Kee pthe cruis econtro llev er presse dbeyond
the pressure point unti lthe desired speed is
set. Press the cruis econtro llev er up :for a
highe rspeed or down ?for alower speed.
X To adjust the se
tspeed in 1km/h incre-
ments: brieflypress the cruis econtro llev er
up : to the pressure point for ahighe rspeed
or down ?for alower speed.
or X Kee pthe cruis econtro llev er presse dtothe
pressure point unti lthe desired speed is set.
Press the cruis econtro llev er up :for a
highe rspeed or down ?for alower speed. Driving systems
183Driving andparking Z