Page 209 of 306

Disp
laymes sages Poss
iblecauses/co nsequences and 0050 0050
Solu tions 00AF
Rep laceKey Battery Rep
laceKey Battery The
SmartKey battery isdisc harged.
X Chan gethebat tery (Y page 69). 00AF
Don 'tForget Your Don
'tForget Your
Key Key The
SmartKey isno tin theign ition lock.You haveopen edthedri v-
er' sdoor withth een gin eswit ched off.
The mult ifunction disp laysho wsthedisp laymes sage amax imum of
60 sec onds and issim plyarem inder.
X Tak eth eSm artKey withyou when youleaveth eveh icle. 00AF
Key NotDetect ed Key
NotDetect ed
(re ddisp laymes sage ) The
SmartKey isno tin theveh icle.
A warn ingtone also soun ds.
If th een gin eis swit ched off,you can nolonger lockth eveh iclece n-
tr ally orstart theen gin e.
X Pull overand stop theveh iclesaf ely assoo nas pos sible,payin g
att ention toroa dand traff icco nd ition s.
X Se cur eth eveh icleagain strol lingaway (Ypage 134).
X Loc ate theSm artKey.
X Pre ss0076 onthest eer ing whee lto confirm thedisp laymes -
sage . Be
caus eth ere isint erf ere ncefrom ast ron gsour ceofradi owave s,
th eSm artKey isno tdet ectedwhils tth een gin eis run ning.
A warn ingtone also soun ds.
X Pull overand stop theveh iclesaf ely assoo nas pos sible,payin g
att ention toroa dand traff icco nd ition s.
X Se cur eth eveh icleagain strol lingaway (Ypage 134).
X Inser tth eSm artKey intoth eign ition lockand bring intoke y
mod e. 00AF
Key NotDetect ed Key
NotDetect ed
(whit edisp laymes sage ) The
SmartKey iscur ren tly und etec ted.
X Chan getheloc ation oftheSm artKey intheveh icle.
If th eSm artKey still can notbe det ected:
X Inser tth eSm artKey intoth eign ition lockand turnit to the
des iredpos ition . 00AF
Rem ove 'Start'But ‐ Rem
ove 'Start'But ‐
ton andInsert Key ton
andInsert Key The
SmartKey isco ntinu ally undetec ted.
KE YLE SS-GO istempo rarily malf unction ing orisdef ective. Awarn -
ing tone also soun ds.
X Inser tth eSm artKey intoth eign ition lockand turnit to the
des iredpos ition .
X Vis itaqualif iedspecialistwor kshop . Disp
laymes sage s
207On -boar dcomp uter anddi sp lay s Z
Page 210 of 306

Warning
andindic atorlamps Gene
ralnote s
Some systemscarry outaself-d iagnosis whenthe igniti onisswi tched on.There fore,some indi-
cator andwarning lampsmay light up orflas htempora rily.This beha viorisnon-critical. These
indica torand warning lampsonly indica teamal function ifthey light up orflas hafter starting the
engine orwhi lstdrivi ng. Safety
Seat belts Warning
/
indic ator
lamp 00510051
Sign altype
Poss iblecause s/cons equen cesand 0050 0050
Sol utions 00E9
0051
After starting theengine, thered seatbel twa rning lamplig hts upfor sixsec-
onds.
The seatbel twa rning lampreminds thedrive rand front passenger tofasten
their seatbel ts.
X Fasten yoursea tbel t(Y pag e42) . 00E9
0051
After starting theengine, thered seatbel twa rning lamplig hts up. Inadd ition,
a wa rning tonesound sfor uptosix seconds.
The drive r'ssea tbel tis not fastened .
X Fasten yoursea tbel t(Y pag e42) .
The warning tonecease s. 208
Warning
andindicator lampsOn-bo ardcomput erand displays
Page 211 of 306

Warning/
indic ator
lamp 00510051
Sign altype
Poss iblecause s/cons equen cesand 0050 0050
Sol utions 00E9
0051
The redseat beltwar ning lamp lights upafter theengine starts,assoon as
the drive r'sorthe front-passenge rdoor isclosed .
The drive ror front passenger hasnotfastened theirseatbelt.
X Fasten yourseat belt(Y pag e42).
The warning lamp goesout.
There areobjects onthe front-passenge rseat.
X Remo vethe objects fromthefront-passenge rseat andstow them inasecure
pla ce.
The warning lamp goesout. 00E9
0051
The redseat beltwar ning lamp flashes and anintermittent audib lewarni ng
sound s.
The drive ror front passenger hasnotfastened theirseatbelt.The vehicl eis
bei ng drive nfaster than15mph (25km/h )or has brieflybeen drivenfaster
than 15mph (25km/h) .
X Fasten yourseat belt(Y pag e42).
The warning lamp goesoutand theintermittent warningtone cease s.
There areobjects onthe front-passenge rseat. Thevehicl eis bei ng drive nfaster
than 15mph (25km/h )or has brieflybeen drivenfaster than15mph
(25 km/h) .
X Remo vethe objects fromthefront-passenge rseat andstow them inasecure
pla ce.
The warning lamp goesoutand theintermittent warningtone cease s. Warning
andindic atorlamps
209On-boardcomput erand displays Z
Page 212 of 306

Safety
systems Warning/
indicator
lamp 00510051
Signal type
Possible causes/co nsequences and0050 0050
Solutions 0027004D
0051
0027 (USAonly)or004D (Canada only):thered brake system warning lamp
is lit while theengine isrunning. Awarning tonealsosounds.
G WARNING
There isnot enough brakefluidinthe brake fluidreservoir.
The braking effectmaybeimpaired.
There isarisk ofan accident.
X Pull over andstop thevehicle safelyassoon aspossible, payingatten tionto
road andtraffic condition s.Do not cont inue driving underanycircumst ances.
X Secure thevehicle against rollingaway(Ypage 134).
X Do not add brake fluid.Adding morewillnotcorrect themalfunction .
X Consult aquali fiedspecialist workshop.
X Observe theadditional displaymessages inthe multifunct iondisplay . 0027
0051
USA only: thered brake system warning lampislit while theengine isrun-
ning. Themultifunct iondisplay alsoshows adisplay message withthe0026
symbol.
The brake pads/linings havereached theirwear limit.
X Visit aquali fiedspecialist workshop. 0025
0051
The yellow ABSwarning lampislit while theengine isrunning.
ABS (anti-lock brakingsystem) ismalfunction ing.
If there isan additional warningtone,theEBD (electronic brakeforcedistribu-
tion) ismalfunction ing.
Other driving systems anddriving safetysystems mayalsomalfunction .
G WARNING
The brake system continues tofunct ionnormally, butwithout thefunct ionslis-
ted above. Thefront andrear wheels couldtherefore lockifyou perform afull
brake application, forexample.
The steerability andbraking characterist icsmay beseverely affected. Thebrak-
ing distance inan emergency brakingsituation canincrease.
If ESP ®
is not operational, ESP®
is unable tostabilize thevehicle.
There isan increased riskofskidding andanaccident.
X Observe theadditional displaymessages inthe multifunct iondisplay .
X Drive oncarefully.
X Visit aquali fiedspecialist workshop immediately.
If the ABS controlunit isdefective, thereisalso apossibili tythat other systems,
such asthe navigation systemorthe automatic transmission,willnotbeavaila -
ble. 210
War
ning andindicator lampsOn-board computerand displays
Page 213 of 306

Warning/
indic ator
lamp 00510051
Sign altype
Poss iblecause s/cons equen cesand 0050 0050
Sol utions 0027004D
00E500BB
0025 0051
0027 (USAonly),004D (Canada only):the red brake warninglamp andthe
yel low ESP®
,ESP ®
OFF andABS warni nglamp sare litwhi lethe engine isrun-
ning.
ABS andESP®
are malfu nctioning.
Other drivingsystems anddrivingsafety systems mayalsomalfu nction.
G WARNING
The brake system continues tofunction normally,but witho utthe functions lis-
ted above.The front andrear whee lscoul dtherefore lockifyou perform afull
brake application, forexampl e.
The steerab ility and braki ngchara cteristics maybesevere lyaffected. Thebrak-
ing dista nceinan emerge ncybraki ngsitua tioncanincreas e.
If ESP ®
is not opera tional,ESP ®
is unab leto stabi lizethevehicl e.
There isan increas edrisk ofskiddi ngand anaccide nt.
X Observe theadditiona ldisp laymessa gesinthe multi function display.
X Drive oncarefu lly.
X Visi ta qua lified speci alist worksho pimmed iately. 00E5
0051
The yellow ESP®
war ning lamp flashes whilethe vehicl eis in motion.
ESP ®
or traction controlhasintervened becausethere isarisk ofskiddi ngorat
lea stone whee lhas started tospin.
Cru isecontrol orActive Distance AssistDISTRONIC isdea ctivated.
X When pulling away,only depre ssthe accele ratorpedalas far asnecessa ry.
X Ease offthe accele ratorpedalwhi lethe vehicl eis in motion.
X Adapt yourdrivi ngstyle tosui tthe road andweather conditions.
X Do not deactivate ESP®
.
In rare cases (Ypag e61) itmay bebest todea ctivate ESP®
.
Observe theimpor tantsafety notesonESP ®
(Y pag e61) . 00E500BB
0051
The yellow ESP®
and ESP®
OFF warni nglamp sare litwhi lethe engine isrun-
ning.
ESP ®
is malfu nctioning.
Other drivingsystems anddrivingsafety systems mayalsomalfu nction.
G WARNING
The brake system continues tofunction normally,but witho utthe functions lis-
ted above.
The braki ngdista nceinan emerge ncybraki ngsitua tioncanthus increas e.
If ESP ®
is not opera tional,ESP ®
is unab leto stabi lizethevehicl e.
There isan increas edrisk ofskiddi ngand anaccide nt.
X Observe theadditiona ldisp laymessa gesinthe multi function display.
X Drive oncarefu lly.
X Visi ta qua lified speci alist worksho pimmed iately. Warning
andindic atorlamps
211On-boardcomput erand displays Z
Page 214 of 306

Warning/
indic ator
lamp 00510051
Sign altype
Poss iblecause s/cons equen cesand 0050 0050
Sol utions 00BB
0051
The yellow ESP®
OFF warning lamp islit whi lethe engine isrunning orthe
ECO start/stop functionisactiva ted.
ESP ®
is dea ctivated.
G WARNING
If ESP ®
is swi tched off,ESP ®
is unab leto stabi lizethevehicl e.
Further drivingsystems ordrivi ngsafety systems arethus restricted.
There isan increas edrisk ofskiddi ngand anaccide nt.
X Rea ctivate ESP®
.
In rare cases (Ypag e61) itmay bebest todea ctivate ESP®
.
Observe theimpor tantsafety notesonESP ®
(Y pag e61).
X Adapt yourdrivi ngstyle tosui tthe road andweather conditions.
If ESP ®
cannot beactiva ted:
X Drive oncarefu lly.
X Have ESP®
checked ataqua lified speci alist worksho p. 0074
0051
Only Mercede s-AMGSLC43:
The yellow SPORT handlingmode warning lamp islit whi lethe engine isrunning.
SPORT handlingmode isactiva ted.
G WARNING
When SPORT handlingmode isswi tched on,ESP ®
is unab leto stabi lizethevehi-
cle.
There isan increas edrisk ofskiddi ngand anaccide nt.
X Only switch toSPORT handlingmode inaccorda ncewith theconditions
descri bedinthe "Activating/d eactivatingESP®
" section (Ypag e61) . 00490024
0051
0049 (USAonly),0024 (Canada only):the red indica torlamp forthe electric
parki ngbrake flashes orislit and/or theyellow warni nglamp forthe electric
parki ngbrake islit.
X Observe theadditiona ldisp laymessa gesinthe multi function display. 0075
0051
The redrestrai ntsystem warning lamp islit whi lethe engine isrunning.
The restrai ntsystem ismalfu nctioning.
G WARNING
The airbag sor Emergency TensioningDevices mayeither betriggere duninten-
tional lyor, inthe event ofan accide nt,may notbetriggere d.
There isan increas edrisk ofinjury .
X Observe theadditiona ldisp laymessa gesinthe multi function display.
X Drive oncarefu lly.
X Contact aqua lified speci alist worksho pand have therestrai ntsystem
checked.
For further informati onabo utthe restrai ntsystem, see(Ypag e39). 212
Warning
andindic atorlampsOn-bo ardcomput erand displays
Page 215 of 306

Engine
Wa
rning/
ind icat or
lam p 00510051
Signa lty pe
Possi blecauses/cons equences and0050 0050
Solu tions 00B9
0051
The yellow CheckEn gin ewarn inglamp lightsup while theeng ineisrun ning.
Ther emay beamalf unction,for exam ple:
R in theeng ineman agem ent
R in thefuel inject ion syst em
R in theexh aust system
R in theign ition syst em
R in thefuel system
The emis sion limit values maybeexc eeded andtheeng inemay beinemer -
gen cymod e.
X Visi ta qualifi edspec ialist workshop immediat ely.
In som est ate s,you must immediat elyvisita qualifi edspec ialist workshop as
soon astheyellow CheckEn gin ewarn inglamp lightsup. This isdue tothelegal
requi rementsin eff ect inthese state s.Ifin doubt ,ch eck whet hersuchlegal reg-
ulati onsapply inthest ate inwhic hyou arecurren tlydriv ing. 00B6
0051
The yellow reservefuel warn inglamp lightsup while theeng ineisrun ning.
The fuel levelhas dropped intoth eres erveran ge.
X Refuel atthenear estgas statio n. 00B6
0051
The yellow reservefuel warn inglamp flashes while theveh icle isin mot ion.
In addit ion,th e00B9 CheckEn gin ewarn inglamp maylight up.
The fuel fillercap isno tclo sed correctlyorthefuel systemisleak ing.
X Chec kth at thefuel fillercap iscor rectlyclosed.
X Ifth efu el filler capisnot corr ectly closed :clo sethefuel fillercap.
X Ifth efu el filler capisclosed :visi ta qualifi edspec ialist workshop. 00AC
0051
The redcoolant warn inglamp lightsup while theeng ineisrun ningand the
coo lant temper aturegage isat thest art ofthesc ale.
The temper aturesen sor forthecoo lant temper aturegage ismalf unctionin g.
The coolant temper atureis no longer bein gmon itored. Thereis arisk ofeng ine
damag eif th ecoo lant temper atureis toohigh .
X Pull overand stop theveh icle safe lyand switchoff theeng ine,payin gatt en-
tio nto road andtraff iccon dition s.Do notcon tinue driv ingunde rany circum -
st anc es.
X Sec ure theveh icle again stroll ing away (Ypage 134).
X Con sult aqualifi edspec ialist workshop. Wa
rning and indicat orlam ps
213On-boar dcomp uter and displa ys Z
Page 216 of 306

Warning/
indic ator
lamp 00510051
Sign altype
Poss iblecause s/cons equen cesand 0050 0050
Sol utions 00AC
0051
The redcoola ntwar ning lamp comes onwhi lethe engine isrunning.
The coola ntleve lis too low.
If the coola ntleve lis correct, theairflowtothe engine radiator may beblocked
or the electric engineradiator fanmay bedefective .
The coola ntistoo hotand theengine isno longer being coole dsuffi ciently .
X Observe theadditiona ldisp laymessa gesinthe multi function display.
X Pul lover andstop thevehicl esafel yand switch offthe engine, paying atten-
tion toroad andtraffic conditions.
X Secure thevehicl eaga inst rolling awa y(Y pag e134).
X Leave thevehicl eand keep asafe dista ncefrom thevehicl euntil theengine
has coole ddow n.
X Che ckthe coola ntleve land add coola nt,obser vingthewarni ngnotes
(Y pag e242) .
X Ifyou have toadd coola ntfrequ ently, havetheengine coolingsystem
checked.
X Make surethattheairsup plytothe engine radiator isnot blocked ,e.g. by
snow, slush orice.
X Do not start theengine againuntil thecoola nttempera turegage isbel ow the
H marking (Ypag e168) .Otherwi se,the engine couldbe dama ged.
X Drive tothe neares tqua lified speci alist worksho p.
X Avoid heavyloa dson the engine asyou doso, e.g. drivinginmountai nouster-
rain andstop-and-go traffic. 00AC
0051
The redcoola ntwar ning lamp comes onwhi lethe engine isrunning.
The coola nttempera turegage hasexceede dthe Hmarking (Ypag e168). The
airfl owtothe engine radiator may beblocked orthe coola ntleve lmay betoo
low .
G WARNING
The engine isnot being coole dsuffi ciently andmay bedama ged.
Do not drive when yourengine isoverhe ated.Thiscancaus esome fluidswhi ch
may have leaked into theengine compartment tocatch fire.
Steam fromtheoverhe atedengine canalsocaus eserio usburns whichcan
occur justbyopeni ngthe hood.
There isarisk ofinjury .
X Observe theadditiona ldisp laymessa gesinthe multi function display.
X Pul lover andstop thevehicl esafel yand switch offthe engine, paying atten-
tion toroad andtraffic conditions.
X Secure thevehicl eaga inst rolling awa y(Y pag e134) .
X Leave thevehicl eand keep asafe dista ncefrom thevehicl euntil theengine
has coole ddow n.
X Che ckthe coola ntleve land add coola nt,obser vingthewarni ngnotes
(Y pag e242).
X Ifyou have toadd coola ntfrequ ently, havetheengine coolingsystem
checked. 214
Warning
andindic atorlampsOn-bo ardcomput erand displays