2015 MERCEDES-BENZ C-CLASS COUPE engine

Display messages
Possible causes/consequences and
M
MSolutions ?
Coolan
tStopv ehi‐
Coolan tStopv ehi‐
cle Switch engine cle Switch engine
off off The coolan
tistoohot.
Aw arning tone also sounds.
G WARNING
Never drive wit hanoverheate dengine. Drivin gwhen your engin eis
overheate dcan caus esom efluid swhichm ay hav eleaked int othe
engin ecom partmen ttocatch fire.
In addition ,steam from an overheate denginec an caus eserious
burns, whic hcan occur jus tbyopening th ebonnet.
There is ariskofi njury.
X Stop th evehicl eimmediately, payin gattention to roa dand traffic
conditions, and switch off th eengine.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 172).
X Wait until th eengineh as cooled down.
X Mak esuret hatthe air supply to th eenginer adiato risnotblocked,
e.g. by frozen slush.
X Do no tstart th eenginea gain until th edisplay message goe sout and
th ec oolan ttem perature is belo w120†. The engin emay otherwise
be damaged.
X Pay attention to th ecoolan ttem perature display.
If th etemperatur eincreases again:
X Consult aqualified specialist workshop immediately.
Under normal operating condition sand wit hthe specified coolant
level, th ecoolan ttem perature may ris eto1 20 †. #
See Owner'
sManual
See Owner' sManual The battery is no
tbein gcharged.
Aw arning tone also sounds.
Possibl ecauses:
R fault yalternator
R torn poly-V-belt
R am alfunction in th eelectronics
! Do no
tcontinue driving. The engin ecould otherwise overheat.
X Stop th evehicl eimmediately, payin gattention to roa dand traffic
conditions, and switch off th eengine.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 172).
X Consult aqualified specialist workshop. Display
messages
267On-boardcomputer an ddisplays Z

Display messages
Possible causes/consequences and
M
MSolutions #
Sto
pv ehicl eSee
Sto pv ehicl eSee
Owner' sManual
Owner' sManual The battery is no longer bein
gcharged and th ebattery charg elevel is
to ol ow.
Aw arning tone also sounds.
X Stop th evehicl eimmediately, payin gattention to roa dand traffic
conditions, and switch off th eengine.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 172).
X Observ ethe instruction sinthe# See SeeOwner's
Owner's Manual
Manualdisplay
message.
X Consult aqualified specialist workshop. #
Sto
pv ehicl eLeave
Sto pv ehicl eLeave
engine running engine running The battery charg
elevel is to olow.
X Pull ove rand stop th evehicl esafely as soo naspossible, paying
attention to roa dand traffic conditions. Do no tcontinue driving
under any circumstances.
X Start th eengine.
X Wait until th edisplay message disappear sbefore pullin gaway. #
Start engine See Start engine See
Owner'
sManual
Owner' sManual The engin
eisoff and th ebattery charg elevel is to olow.
X Switc hoff electrical consumer sthaty ou do no tneed, suc hasthe
rear window heating and interior lighting.
X Leav ethe engin erunnin gfor afew minutes, or drive for alonger
distance.
The battery charges. 4
Check Check
eng.
eng.oil
oillev.
lev.
when
when next
nextrefuelling
refuelling The engin
eoil level has dropped to th eminimum level.
Aw arning tone also sounds.
! Avoid lon
gjou rneys when there is to olittl ec oolan tint hecooling
system. Otherwise th eenginew ill be damaged.
X Chec kthe oil level when next refuelling, at th elatest (Y page 323).
X If necessary, to puptheengin eoil (Y page 323).
If you have to top up th eengin eoil frequently:
X Contac taqualified specialist workshop and hav ethe engine
checked.
Information on approve dengineo ils can be obtained from aqualified
specialist workshop or on th eInterne tath ttp:// bevo.mercedes-
benz.com. 268
Display
messagesOn-boardcomputer an ddisplays

Display messages
Possible causes/consequences and
M
MSolutions 4
Add
1litre engine
Add 1litre engine
oil whe nnextr efu‐
oil whe nnextr efu‐
elling elling The engin
eoil level has dropped to th eminimum level.
! Avoid lon
gjou rneys when there is to olittl ec oolan tint hecooling
system. Otherwise th eenginew ill be damaged.
X Chec kthe oil level when next refuelling, at th elatest (Y page 323).
X If necessary, to puptheengin eoil (Y page 323).
If you have to top up th eengin eoil frequently:
X Contac taqualified specialist workshop and hav ethe engine
checked.
Information on approve dengineo ils can be obtained from aqualified
specialist workshop or on th eInterne tath ttp:// bevo.mercedes-
benz.com. 4
Engine oil level Engine oil level
Stop Stop
vehicle
vehicle Switch
Switch
engine off
engine off The engin
eoil level is to olow. There is ariskofe ngined amage.
X Stop th evehicl eimmediately, payin gattention to roa dand traffic
conditions, and switch off th eengine.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 172).
X Chec kthe engin eoil level (Y page 323).
X If necessary, to puptheengin eoil (Y page 323). 8
Reserv
efuell evel
Reserv efuell evel The fuel level has dropped int
othe reserv erange.
Operation of th eauxiliar yheating is deactivated if th efuel level drops
int ot he reserv erange.
X Refue lattheneares tfilling station. C There is ver
ylittl efuel in th efuel tank.
The auxiliary heating canno tbeoperated.
X Refue lattheneares tfilling station without fail. ¸
Replac
eair cleaner
Replac eair cleaner Vehicles wit
hadiesel engine: th eenginea ir filter is dirty and mus tbe
replaced.
X Consult aqualified specialist workshop. !
Clean the fue
lfil‐
Clean the fue lfil‐
ter ter Vehicles wit
hadiesel engine: there is water in th efuel filter. The water
mus tbed rainedoff.
X Consult aqualified specialist workshop. Refill AdBlue See
Refill AdBlue See
Owner’
sManual
Owner’ sManual The AdBlue
®
level has fallen belo wthe reserv erange. Awarning tone
also sounds.
X Refill AdBlue ®
as soo naspossible(Ypage 169). Refill AdBlue No Refill AdBlue No
start in ... mi start in ... mi
The AdBlue
®
level is only sufficien tfor th eindicated distance. Awarn-
ing tone also sounds.
X Refill AdBlue ®
immediately (Y page 169).
i If you drive th
evehicl efaste rtha n15k m/hthe Refill Refill AdBlue
AdBlue
No start in ... mi No start in ... mi message goesout after approximately one
minute. Display
messages
269On-boardcomputer an ddisplays Z

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 Blind Spo
tAssist
Blind Spo tAssist
currently unavaila‐
currently unavaila‐
ble ble See
SeeOwner's
Owner's Man‐
Man‐
ual
ual orActive Blind
Active Blind
Spo tA ssist cur‐
Spo tA ssist cur‐
rently unavailable
rently unavailable
See Owner' sManual
See Owner' sManual Blind Spot Assis
torActiveBlind Spot Assis tistemporarily inoperative.
Possibl ecauses:
R ther adar sensor system is outside th eoperating temperature range
R ther adar sensor system is temporarily inoperative, e.g. due to elec-
tromagneti cradiation emitted by nearby TV or radi ostation sor
other source sofelectromagneti cradiation
Once th ecauses listed abov enolonger apply, th edisplay message
goe sout.
Blind Spot Assis torActiveBlind Spot Assis tisoperational again.
If th edisplay message does no tdisappear:
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 Restart th eengine. Blind Spo
tAssist
Blind Spo tAssist
not available when not available when
towing atrailer
towing atrailer
See Owner' sManual
See Owner' sManual
or Active Blind Active Blind
Spo tA ssist not
Spo tA ssist not
available whe ntow‐
available whe ntow‐
ing atraile rSee
ing atraile rSee
Owner' sManual
Owner' sManual Blind Spot Assis
torActiveBlind Spot Assis tisdeactivated while tow-
ing atrailer.
You hav eestablished th eelectrical connection between th etrailer and
your vehicle.
X Press aon thesteering whee ltoc onfir mthedisplay message. Blind Spo
tAssist
Blind Spo tAssist
inoperative
inoperative or
Active Blind Spot Active Blind Spot
Assist inoperative Assist inoperative Blind Spot Assis
torActiveBlind Spot Assis tisfaulty.
X Consult aqualified specialist workshop. Par
kA ssist cancel‐
Par kA ssist cancel‐
led
led The driver's door is open.
X Repeat th eparking gap measuremen tand parking process wit hthe
driver's door closed. You touched th
emultifunction steering whee lwhile steering inter-
vention was active.
X Whil esteering intervention is active ,makes uren otto touch the
multifunction steering wheel. The vehicl
ehas started to skid and ESP ®
has intervened.
X Use Active Parking Assis tagain later (Y page 201). Par
kA ssist inoper‐
Par kA ssist inoper‐
ative
ative PARKTRONI
Cismalfunctioning or faulty.
X Follow th einstruction sand helpful hints in th e"Problem swith
PARKTRONIC" section (Y page 201).
If th emultifunction display still shows th edisplay message:
X Consult aqualified specialist workshop. 272
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 DISTRONIC PLU
Scur‐
DISTRONIC PLU Scur‐
rently unavailable
rently unavailable
See Owner' sManual
See Owner' sManual DISTRONI
CPLUSist emporarily inoperative.
Steering Assis tand Stop&Go Pilo tare temporarily inoperative.
Possibl ecauses:
R ther adar sensor system is temporarily inoperative, e.g. due to elec-
tromagneti cradiation emitted by nearby TV or radi ostation sor
other source sofelectromagneti cradiation
R thes ystem is outside th eoperating temperature range
R theo n-bo ardv oltag eistoolow.
Aw arning tone also sounds.
Once th ecauses listed abov enolonger apply, th edisplay message
goe sout.
DISTRONI CPLUSiso perational again.
If th edisplay message does no tdisappear:
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 Restart th eengine. DISTRONIC DISTRONIC
PLUS
PLUSinop‐
inop‐
erative
erative DISTRONI
CPLUSisf aulty.
The followin gmay hav ealso failed:
R BA SP LUSw ithC ross-Traffic Assist
R PRE-SAFE ®
Brake
R Steering Assis tand Stop&Go Pilot
Aw arning tone also sounds.
X Consult aqualified specialist workshop. DISTRONIC PLU
Ssus‐
DISTRONIC PLU Ssus‐
pended
pended You hav
edepressed th eaccelerato rpedal .DISTR ONICPLUSisno
longer controllin gthe speed of th evehicle.
X Remove your foo tfromt heaccelerato rpedal. DISTRONIC PLUS
DISTRONIC PLUS
---m
ph
---m ph An activation condition for DISTRONI
CPLUSisn otfulfilled.
X Chec kthe activation condition sfor DISTRONI CPLUS(Ypage 184). DISTRONIC PLU
Sand
DISTRONIC PLU Sand
SPEEDTRONIC inoper‐ SPEEDTRONIC inoper‐
ative ative DISTRONI
CPLUSa nd SPEEDTRONI Care faulty. Awarning tone also
sounds.
Steering Assis tand Stop&Go Pilo tare therefor ealso unavailable.
X Consult aqualified specialist workshop. 274
Display
messagesOn-boardcomputer an ddisplays

Display messages
Possible causes/consequences and
M
MSolutions Wheel sensor(s)
Wheel sensor(s)
missing missing There is no signal from th
etyrep ressur esensor of on eorseveral
wheels. The pressur eoftheaffecte dtyreisn otdisplayed in th emul-
tifunction display.
X Hav ethe fault ytyrep ressur esensor replace dataqualified spe-
cialist workshop. Tyre Tyre
press.
press. monitor
monitor
inoperative No
inoperative No
wheel sensors wheel sensors The wheels fitte
ddonothav esuitable tyr epressur esensors. The tyre
pressur emonitor is deactivated.
X Fit wheels wit hsuitable tyr epressur esensors.
The tyr epressur emonitor is activated automatically after drivin gfor
af ew minutes. Tyre
Tyre
press.
press. monitor
monitor
inoperative
inoperative The tyr
epressur emonitor is faulty.
X Consult aqualified specialist workshop. Vehicle
Display messages
Possible causes/consequences and
M
MSolutions To start engine,
To start engine,
shift to either P shift to either P
or N or N You hav
eattempte dtostart th eenginew itht he transmission in posi-
tion Ror D.
X Shift th etransmission to position Por N. Apply
Apply
brake
braketo
todese‐
dese‐
lec tP ark( P) posi‐
lec tP ark( P) posi‐
tion
tion You hav
eattempte dtomovet he transmission selector lever to posi-
tion D,Ror Nwithout depressing th ebrak epedal.
X Depress th ebrak epedal. To shift out of P
To shift out of P
or or
N,
N,depress
depress brake
brake
and start engine
and start engine Wit
hthe engin eswitched off ,you hav eattempte dtoshift th etrans-
mission out of position Por Nint oa nother transmission position.
X Depress th ebrak epedal.
X Start th eengine. Ris
kofv ehicle
Ris kofv ehicle
rollin gTransmis‐
rollin gTransmis‐
sio nn ot in P
sio nn ot in P The driver's door is open or no
tfully closed and th etransmission is in
position R,Nor D.
Aw arning tone also sounds.
G WARNING
The vehicl emay rol laway.
There is ariskofana ccident.
X Shift th etransmission to position P.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 172).
X Clos ethe driver's door fully. Onl
ys elect Park
Onl ys elect Park
(P)
(P) when
when vehicle
vehicle is
is
stationary
stationary The vehicl
eismoving.
X Pull ove rand stop th evehicl esafely as soo naspossible, paying
attention to roa dand traffic conditions.
X Shift th etransmission to position P. Display
messages
279On-boardcomputer an ddisplays Z