2015 MERCEDES-BENZ C-CLASS COUPE ignition

Display messages
Possible causes/consequences and
M
MSolutions Front-passenger
Front-passenger
airbag enable
dSee
airbag enable dSee
Owner' sManual
Owner' sManual The front-passenger fron
tairbag and front-passenger kneebag are
enabled during th ejou rney, although:
R ac hild, asmall adult or an objec tweighing less than th esystem
weigh tthreshold is locate donthefront-passenger seat
or
R thef ront-pa ssenger seat is no toccupied
The system may detec tobjects or force stha tare addin gtotheweight
applie dtotheseat.
G WARNING
The airbag may deploy unintentionally.
This poses an increased ris kofinjury.
X Pull ove rand stop th evehicl esafely as soo naspossible, paying
attention to roa dand traffic conditions.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 172).
X Switc hthe ignition off.
X Ope nthe front-passenger door.
X Remove th echild and th echild restrain tsystem from th efront-
passenger seat.
X Mak esuret he re are no objects applyin gadditional force to th eseat.
The system may otherwise detec tthe additional force and interpret
th es eat occupant's weigh tasgreatertha nita ctually is.
X Mak esuret hatthe seat is unoccupied ,close th efront-pa ssenger
door and switch on th eignition.
X Observ ethe PASSENGER AI RBAG indicator lamp sinthecentre
console and th emultifunction display and chec kthe following:
Seat unoccupied and ignition switched on:
R as elf-diagnosis is carrie dout.T he PASSENGER AI RBAG OFFa nd
PASSENGER AI RBAG ON indicator lamp smustligh tups imulta-
neousl yfor approximately six seconds
R theP ASSENG ER AIRBAG OFFindicator lamp mus tthe nligh tup
and remain lit after th eself-diagnosis .Iftheindicator lamp is on,
th ea utomatic front-passenger fron tairbag deactivation system
has disabled th efront-pa ssenger fron tairbag (Y page 48)
R the Front-passenger
Front-passenger airbag airbagenabled
enabled See
SeeOwner's
Owner's Manual
Manual
or Front-passenger
Front-passenger airbag
airbagdisabled
disabled See
SeeOwner's
Owner's Manual
Manual
display message smustn otappear in th emultifunction display
X Wait for aperiod of at least 60 seconds until th eneces sarysystem
checks hav ebeen completed.
X Mak esuret hatthe display message sdonotappear in th emulti-
function display.
If these condition sare met ,the front-passenger seat can be occupied
again .Whether th ePASSENG ER AIRBAG OFForONi ndicator lamp
remain slit or goe sout depend sonhow theautomatic front-passenger
fron tairbag deactivation system classifies th eoccupant.
If th econditi onsa re no tmet,t he system is no toperating correctly.
X Consult aqualified specialist workshop immediately. 264
Display
messagesOn-boardcomputer an ddisplays

Display messages
Possible causes/consequences and
M
MSolutions Refill AdBlue Eng.
Refill AdBlue Eng.
start not possible start not possible
The AdBlue
®
tan kise mpty. Awarning tone also sounds. You can no
longer start th eengine.
X Ad datl east 3. 5lofA dBlue ®
(Y page 169).
X Turn th eignition on for approximately on eminute.
The system require sapproximately on eminute after refillin gto
detec tthe chang eintheAdBlue ®
level.
X Start th eengine. Check AdBlue See
Check AdBlue See
Owner’
sManual
Owner’ sManual The AdBlue
®
system is malfunctioning .Awarning tone also sounds.
X Consult aqualified specialist workshop. Eng
.s tart not pos‐
Eng .s tart not pos‐
sible in ... mi sible in ... mi The AdBlue
®
system is malfunctioning .Awarning tone also sounds.
X Consult aqualified specialist workshop immediately. Eng
.s tart not pos‐
Eng .s tart not pos‐
sible
sible The AdBlue
®
system is malfunctioning .Awarning tone also sounds.
You can no longer start th eengine.
X Consult aqualified specialist workshop immediately. Driving systems
Display messages
Possible causes/consequences and
M
MSolutions À
ATTENTION ASSIST: ATTENTION ASSIST:
Tak
eab reak!
Tak eab reak! Based on certain criteria, ATTENTION ASSIST has detecte
dfatigue or
al ack of concentration on th epart of th edriver .Aw arning tone also
sounds.
X If necessary, tak eabreak.
During lon gjou rneys, tak eregular breaks in goo dtimesot hatyou get
enough rest. À
ATTENTION ASSIST ATTENTION ASSIST
inoperative inoperative ATTENTION ASSIST is inoperative.
X Consult aqualified specialist workshop. ¨
Vehicl
erising
Vehicl erising Your vehicl
eisadjusting to th elevel you hav eselected. ¨
Vehicl
erising
Vehicl erising
Please wait Please wait The vehicl
elevel is to olow when th evehicl eiss tationary. Awarning
tone also sounds.
X Do no tpull away.
The vehicl elevel is set when th edisplay message disappears. 270
Display
messagesOn-boardcomputer an ddisplays

Display messages
Possible causes/consequences and
M
MSolutions Active Parking Assis
tisunavailable or faulty.
X Switc hoff th eignition and restar tthe engine.
If Active Parking Assis tcontinue stobeu navailable (the jsymbol
does no tappear in th emultifunction display):
X Consult aqualified specialist workshop. Par
kA ssist
Par kA ssist
switched off
switched off The vehicl
eisparked. Awarning tone also sounds.
The display message disappear sautomatically. Traffic
Traffic
Sign
SignAssist
Assist
currently unavaila‐
currently unavaila‐
ble ble See
SeeOwner's
Owner's Man‐
Man‐
ual
ual Traffic Sig
nAssistist emporarily inoperative.
Possibl ecauses:
R thew indscree nisdirty in th ecamera' sfield of vision
R visibilit yisimpaire ddue to heav yrain ,sno worf og
X Clean th ewindscreen.
If th esystem detects that th ecamera is full yoperational, th edisplay
message disappears.
Traffic Sig nAssistiso perational again. Traffic Traffic
Sign
SignAssist
Assist
inoperative
inoperative Traffic Sig
nAssistisf aulty.
X Consult aqualified specialist workshop. ë
Off Off The HOLD function is deactivated. The vehicl
eisskidding.
Aw arning tone also sounds.
X Reactivat ethe HOLD function later (Y page 192). The HOLD function is deactivated. Whe
nthe brak epedal is firmly
depressed, an activation condition is no tfulfilled.
Aw arning tone also sounds.
X Chec kthe activation condition sfor th eHOLDf unction
(Y page 192). DISTRONIC PLU
Soff
DISTRONIC PLU Soff DISTRONI
CPLUSh as been deactivated (Y page 184).
If it was no tdeactivated by th edriver ,aw arning tone also sounds. DISTRONIC PLUS
DISTRONIC PLUS
available again available again DISTRONI
CPLUSiso perational again after having been temporarily
unavailable .You can no wreactivat eDISTR ONICPLUS(Ypage 184). Display
messages
273On-boardcomputer an ddisplays Z

Display messages
Possible causes/consequences and
M
MSolutions Ð
Power steering mal‐ Power steering mal‐
function See Own‐ function See Own‐
er'
sM anual
er' sM anual The powe
rsteering assistanc eisfaulty.
Aw arning tone also sounds.
G WARNING
You will need to use mor eforce to steer.
There is ariskofana ccident.
X Chec kwhether you are able to apply th eextra force required.
If you ar eabletos teer safely:
X Drive on carefully.
X Consult aqualified specialist workshop immediately.
If you ar eunable to steer safely:
X Do no tdrive on.
X Consult aqualified specialist workshop. Ð
Steering malfunc‐ Steering malfunc‐
tio
nS ee Owner's
tio nS ee Owner's
Manual Manual Vehicl
ewithm anual transmission :the electric steering loc kismal-
functioning.
G WARNING
The steering may be locke dbytheelectric steering lock.
There is ariskofana ccident.
X Pull ove rand stop th evehicl esafely as soo naspossible, paying
attention to roa dand traffic conditions.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 172).
X Do no tdrive on.
X Consult aqualified specialist workshop. _
Before Before
starting
starting the
the
engine ,turnt he
engine ,turnt he
steering wheel.
steering wheel. Vehicl
ewithm anual transmission :the electric steering loc kismal-
functioning.
X Remove th ekeyfrom th eignition lock.
X To unloc kthe steering ,movet he steering whee lslightly.
X Inser tthe keyintot he ignition loc kagain. Telephone Telephone
No
Noservice
service Your vehicl
eisoutside th enetwork provider' stransmitter/receiver
range.
X Wait until th emobile phone operational readiness symbol appears
in th emultifunction display. ¥
Top up washer fluid Top up washer fluid The washer flui
dlevel in th ewasher flui dreservoir has dropped below
th em inimum.
X Top up th ewasher flui d(Ypage 325). Display
messages
283On-boardcomputer an ddisplays Z

Key
Display messages
Possible causes/consequences and
M
MSolutions Â
Key Key
does
does not
notbelong
belong
to vehicle
to vehicle You hav
eput th ewrong ke yintheignition lock.
X Use th ecorrect key. Â
Replac
ekey
Replac ekey The ke
yneeds to be replaced.
X Consult aqualified specialist workshop. Â
Change Change
key
keybatteries
batteries The ke
ybattery is discharged.
X Replac ethe batterie s(Ypage 83). Â
Key not detected Key not detected
(whit
edisplay message) The ke
yiscurrentl yundetected.
X Change th elocation of th ekeyin th evehicle.
If th ekeystill canno tbedetected:
X Inser tthe keyintot he ignition loc kand tur nittot hedesire dposi-
tion. Â
Key not detected Key not detected
(re
dd isplay message) The ke
yisnotin th evehicle.
Aw arning tone also sounds.
If th eengineiss witched off ,you can no longer loc kthe vehicl ecen-
trally or start th eengine.
X Pull ove rand stop th evehicl esafely as soo naspossible, paying
attention to roa dand traffic conditions.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 172).
X Locate th ekey.
X Press aon thesteering whee ltoc onfir mthedisplay message. Becaus
ethe re is interferenc efromas tron gs ource of radi owaves, the
ke yisn otdetecte dwhilstthe engin eisrunning.
Aw arning tone also sounds.
X Pull ove rand stop th evehicl esafely as soo naspossible, paying
attention to roa dand traffic conditions.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 172).
X Inser tthe keyintot he ignition loc kand bring int okeymode. Â
Remove Remove
starting
starting but‐
but‐
ton,
ton, then
theninsert
insert key
key The ke
yiscontinually undetected.
The ke ydetection function has atem porar ymalfunction or is faulty. A
warning tone also sounds.
X Inser tthe keyintot he ignition loc kand tur nittot hedesire dposi-
tion.
X Consult aqualified specialist workshop. 284
Display
messagesOn-boardcomputer an ddisplays

Warning and indicator lamps in the instrument cluster
General notes
Some systems carry out aself-diagnosis when the ignition is switched on. Severa lwarning and
indicator lamps can thereby temporarily light up or flash. This behaviou risnon-critical. These
warning and indicator lamps only indicate amalfunction if they light up or flas hafter the engine is
started or during ajourney. Safety
Seat belts Warning/
indicator
lamp
N N
Signal type
Possibl ecauses/consequencesa ndM
MSolutions ü
N
Only for certain countries :the red sea tbeltw arning lam plights up for 6seconds
after the engine starts.
The sea tbeltw arning lam preminds the drive rand front passenger to fasten their
sea tbelts.
X Fasten you rseatb elt( Y pag e43). ü
N
Only for certain countries :the red sea tbeltw arning lam plights up after the
engine starts. In addition, awarning tone sound sfor up to 6seconds.
The driver's sea tbeltisn ot fastened.
X Fasten you rseatb elt( Y pag e43).
The warning tone ceases. ü
N
The red sea tbeltw arning lam plights up after the engine starts, as soon as the
driver's or the front-passenger door is closed.
The drive rorpassenger has not fastened their sea tbelt.
X Fasten you rseatb elt( Ypag e43).
The warning lam pgoes out.
There are objects on the front-passenger seat.
X Remove the objects from the front-passenger sea tand stow them in asecure
place.
The warning lam pgoes out. ü
N
The red sea tbeltw arning lam pflashes and an intermittent audible warning
sounds.
The drive rorpassenger has not fastened their sea tbelt. At the same time, you are
driving faster than 25 km/h or have briefly drive nfaster than 25 km/h.
X Fasten you rseatb elt( Y pag e43).
The warning lam pgoes out and the intermittent warning tone ceases.
There are objects on the front-passenger seat. At the same time, you are driving
faster than 25 km/h or have briefly drive nfaster than 25 km/h.
X Remove the objects from the front-passenger sea tand stow them in asecure
place.
The warning lam pgoes out and the intermittent warning tone ceases. Warning and indicator lamps in the instrument cluster
285On-board computer and displays Z

i
You can remove the ashtray inser
tand use
the resulting compartmen tfor stowage.
Rear-compartment ashtray X
To open: pull cover ;out by its top edge.
X To remove th einsert: push ribbing =from
the left side and pull insert :upwards.
X To fit th einsert: fit insert :intot he holder
from above and press down int othe holder
until it engages. Cigarett
elighter G
WARNING
You can burn yourself if you touc hthe hot
heatin gelemen torthe socket of the cigarette
lighter.
In addition ,flammable materials can ignit eif:
R the hot cigarett elighter falls
R ac hild holds the hot cigarett elighter to
objects, for example
There is arisk of fire and injury.
Always hold the cigarett elighter by the knob.
Always make sure that the cigarett elighter is
out of reach of children. Never leave children unattended in the vehicle.
Your attention must always be focused on the
traffic conditions. Only use the cigarett elighter
when road and traffic condition spermit. Example
X Turn the key to position 2in the ignition lock
(Y page 145).
X To open: open the stowage compartment
(Y page 309).
X Press in cigarett elighter ;.
Cigarette lighter ;will pop out automatically
when the heatin gelemen tisred-hot.
X To close: push cover :of the stowage com-
partmen tclosed. 12
Vsockets
Genera lnotes X
Turn the key to position 1in the ignition lock
(Y page 145).
The sockets can be used for accessories with a
maximum draw of 180 W(15 A). Accessories
include such item sasmobile phon echargers.
If you use the sockets for long periods when the engin eisswitched off, the battery may dis-
charge.
An emergenc ycut-of fensures that the on-board
voltage does not drop too low. If the on-board
voltage is too low, the power to the sockets is
automatically cut .This ensures that there is suf-
ficient power to star tthe engine.
If you have connected adevic etot he 12 V
socket, leave the cover of the stowage com-
partmen topen. This prevent sthe cover from
being blocked. 316
FeaturesStowing and features

Socket in the front centre console
X
To open: open the stowage compartment
(Y page 309).
X Lift up the cover of the socket.
X To close: push the cover of the stowage com-
partment closed.
Socket in the rear-compartment centre
console X
Pull the cover out by the top of its handle
edge.
X Lift up the cover of the socket. 230
Vsocket
Important safety notes G
DANGER
When asuitable device is connected, the
230 Vpower socket will be carrying ahigh
voltage. You could receive an electric shock if the connector cable or the 230 Vpower
socket is pulled out of the trim or is damaged
or wet. There is arisk of fatal injury.
R Use only connector cables that are dry and
free of damage.
R When the ignition is off, make sure that the
230 Vpower socket is dry.
R Immediately have the 230 Vpower socket
checked or replaced at aqualified special-
ised workshop if it is damaged or has been
pulled out of the trim.
R Never plug the connector cable into a230 V
power socket that is damaged or has been pulled out of the trim. G
DANGER
If you reach into the power socket or plug
inappropriate devices into the power socket,
you could receive an electric shock. There is a risk of fatal injury.
Only attach appropriate objectstot he power
socket. !
Note that work and repairs on the 230 V
power socket should only be carried out by
qualified specialist personnel.
General notes The 230
Vpower socket provides an alternating
voltage of 230 Vsothat small electronic devices
can be connected. These devices, such as
games consoles, chargers and laptops, must not
consume more than amaximum of 150 watts
altogether.
Do not connect any multiple socket outlets to
the 230 Vpower socket.
Requirements for operating these devices:
R the electronic device that you connect has a
suitable connector and conforms to stand-
ards specific to the country you are in
R the electronic device connector is plugged
into the 230 Vpower socket
R the maximum wattage of the device to be
connected must not exceed 150 watts
R the on-board voltage is within apermissible
voltage range
R the 12 Vsocket in the front centre console is
working properly (Y page 317)
Using the 230 Vpower socket X
To switch on: switch the ignition on.
X Open flap =.
X Insert the electronic device connector into
230 Vpower socket :.
Indicator lamp ;lights up.
X To switch off: remove the connector from
230 Vpower socket :.
Make sure that you do not pull on the cable. Features
317Stowing and features Z