
th
er adiator and parts of thee xhau stsystem. #
Letthe engine cool down and only
to uc ht he component parts described
below: &
WARNING Risk of inju ryfrom using the
windscreen wiper swhile thee ngine bon‐
ne tiso pen
When thee ngine bonn etis open ,and the
windscreen wiper saresetinm otion, youc an
be trapped bythew iper linkage. #
Alw ayss witc hoffthew indscreen wip‐
er sa nd ignition befor eopening the
engine bonn et. #
Toopen: pull lever1torelease thee ngine
bonn et. #
Push bonne tcatch 1upwards and lif tthe
bonne tbyapproximatel y40cm. #
Toclose: lowe rthe bonne tand le titfall from
ah eight of appr oximatel y20cm. #
Ifth eb onnet canstill be lif teds lightl y,open
th eb onnet again and close it wit halittle
mor eforce until it engages cor rectly. Maintenance and care
361

On-boar
dcomputer:
, Service .
Engine oil level:
Yo uw ills ee one of thef ollowing messa gesin
th em ultifunction displa y: #
Engine oi llev el Measuring now:m easure‐
ment of theo il le velisn otyetp ossible.
Re peat ther eques tafter am aximu mof30
minutes' driving. #
Engine oil level OK andtheb ar displa yfor
indicating theo il le velint he multifunction
displa yisgreen and is between "min" and
"max": theo il le velisc orrect. #
Engine oil level Add 1.0 l andtheb ar display
fo ri ndicating theo il le velint he multifunction
displa yisorang ea nd is belo w"min": topup
wit h1lofe ngineoil. #
Reduce engin eoil level andtheb ar display
fo ri ndicating theo il le velint he multifunction
displa yisorang ea nd is abo ve"max": drain
of ft he exc ess engine oil. Consult aqualified
specialis tworks hop. #
For engine oil level turn on ignition:s witchon
th ei gnition tocheckt he engine oil le vel. #
Engine oil level System inoperative :sensor
fa ulty or no tconnec ted. Consult aqualified
specialis tworks hop. #
Engine oil level System currently unavail. :
close theb onnet.
To pping up engine oil &
WARNING Danger of bu rnsf romh ot
component parts in thee ngine compart‐
ment
Cer tain component parts in thee ngine com‐
partmen tmaybe very hot, e.g. thee ngine,
th er adiator and parts of thee xhau stsystem. #
Letthe engine cool down and only
to uc ht he component parts described
below: &
WARNING Risk offire and injur yfrom
engine oil
If engine oil comes int ocontact wi thhot
component parts in thee ngine compart‐
ment ,itmayignite. #
Mak esuret hat no engine oil is spilled
next tothef iller opening. #
Allo wthe engine tocool of fand thor‐
oughl yclean thee ngine oil from compo‐
nentp arts befor estartin gt he vehicle. *
NO
TEEngine dama gecaused byan
incor rect oil filter ,incor rect oil or addi‐
tives #
Do no tuse engine oil soroilfilters
whic hdon otcor respond tothes pecifi‐
cation sexplicit lyprescribed fort he
service inter vals. #
Do no talter thee ngine oil or oil filter in
order toachie velonger chang einter vals
th an presc ribed. #
Do no tuse additives. #
Followt he instructions in thes ervice
inter vald ispla yregarding theo il
ch ange. Main
tenance and care 363

Compl
ywitht he manufacturer's saf etyn otes on
th es tickeront he tyr einflation compressor.
Ha ve thet yres ealant bottle replaced everyfour
ye arsataq ualified specialis tworks hop. #
Do no tremo veanyforeign object swhich
ha ve entered thet yre. #
Affixp art 1 oftheT IREFI Tstickertot he
instrument clus terw ithin thed rive r's field of
vision. #
Affixp art 2 oftheT IREFI Tstickern ear the
va lveont he wheel wit hthe defectiv etyre. #
Pull plug 4withthe cable and hose 5out
of thet yrei nflation compressor housing. #
Push thep lug of hose 5intof lange 6of
tyr es ealan tbottle 1 until thep lug engages. #
Place tyr esealant bottle 1head down wards
int or ecess 2ofthet yrei nflation compres‐
sor. #
Remo vethec ap from valve 7 onthef aulty
tyre. #
Screwf illing hose 8ontovalve 7. #
Inser tplug 4intoa1 2‑V‑soc ketiny our
ve hicle. #
Switc hthe ignition on. #
Press on and of fswitch 3onthet yrei nfla‐
tion compressor.
The tyr einflation compressor is switched on.
The tyr eisinflated. Fir st,t yres ealant is pum‐
ped int othe tyre. The pressur emaybrief ly
ri se toappr oximatel y500 kP a(5bar/73psi). Breakdown assis
tance 37 9

*
NO
TEDama gedue toincor rect us eof
th et ow ing eye When
atow ing eyeisu sedtoreco verav ehi‐
cle, thev ehicle ma ybedamaged in thep roc‐
ess. #
Onlyusethet ow ing eyetot owaway or
to ws tartthe vehicle. To
w- starting thev ehicle (emer gency engine
st arting) Ve
hicles with automatic transmission
* NO
TEDama getothea utomatic trans‐
mission due to tow-starting The automatic transmissio
nmaybe damaged
in thep rocess of tow- startin gvehicles with
automatic transmission. #
Vehicles wit hautomatic transmission
mus tnotbe tow- star ted. #
Vehicles wit hautomatic transmission must
no tbet ow-sta rted. Electrical fuses
Note
sone lectrical fuses &
WARNING Risk of accident and inju ry
due to ov erloaded lines
If yo um anipulat eorbridg eaf aulty fuse or if
yo ur eplace it wit hafuse wit hahigher
amperage, thee lectric line could be overloa‐
ded.
This could result in afire. #
Alwa ys replace faulty fuse swiths peci‐
fi ed ne wfuses conta iningthe cor rect
amperage. *
NO
TEDama gecaused byincor rect fuses Incor
rect fuses ma ycause damag etoelectri‐
cal components or sy stems. #
Onlyuse Mercedes-Benz appr oved
fuse switht he cor rect fus erating. Bl
ow nfuses mustbe replaced wit hfuses of the
same rating ,which youc an recognise bythec ol‐
our and fuse rating .The fuse rating sarelist ed in th
ef use assignmen tdiagram. The fuse assign‐
ment diagram is in thev ehicle document wallet.
* NO
TEDama geor malfunctions caused
by moisture Moistur
emaycause dama getothee lectrical
sy stem or cause it tomalfunction. #
When thef use bo xisopen, mak esure
th at no moistur ecan enter thef use
box. #
When closing thef use box, mak esure
th at thes eal of thel id is positioned cor‐
re ctly on thef use box. If
th en ewlyinser tedf use also blo ws,have the
cause trace dand rectifie dataq ualified special‐
is tw orks hop, e.g. aMercedes-Benz Service
Centre.
Ensur ethe following befor ereplacing afuse:
R The vehicle is secured agains trolling away.
R All electrica lconsumer sareswitched off.
R The ignition is switched off. 392
Breakdown assi stance

The electrical fuses ar
elocated in various fuse
bo xes:
R Fuse bo xinthe engine compartment on the
driver's side (→ page395)
R Fuse bo xont he driver's side of thed ash‐
boar d(→pag e396)
R Fuse bo xinthe front-passenge rfootwell
(→ pag e396)
R Fuse bo xinthe boo tontheright-hand side
of thev ehicle, when vie wedint he direction
of tra vel(→ page397) Fu
se bo xinthe engine compartment Requ
irements:
R Obser vethen otes on electrical fuses
(→ pag e392).
Ha ve thef ollowing readil yavailable:
R Adryclo th
R Ascrew driver Opening &
WARNING Risk of inju ryfrom using the
windscreen wiper swhile thee ngine bon‐
ne tiso pen
When thee ngine bonn etis open ,and the
windscreen wiper saresetinm otion, youc an
be trapped bythew iper linkage. #
Alw ayss witc hoffthew indscreen wip‐
er sa nd ignition befor eopening the
engine bonn et. #
Release retainin gclips 1.
Pull co ver2up. Breakdown assi
stance 393

cle
.The recommended tyr epressures apply for
cold tyres under various operating conditions,
i.e. loading and/or speed of thev ehicle.
If one or mor etyres izes precede atyrep res‐
sure, thet yrep ressur einformation following is
onl yvalid fort hose tyr esizes.
If th ep receding tyr esizes ar ecomplemented by
the + symbol, thet yrep ressur einformation
fo llowing sho wsalternativ etyrep ressures.
Thes etyrep ressures ma yimp rove your vehicle's
ri de comfort. Fuel consum ption ma ythen
increase slightly.
The load conditions "partially laden" and "fully
laden" ar edefined in thet able ford iffe re nt num‐
be rs of passenger sand amounts of luggage. The
actual number of seats ma ydiffe rf romt his.
Be sur etoalso obse rvet he following fur ther
re lated subjects:
R Notesont yrep ressur e(→pag e397) Ty
re pressur emonitoring sy stem Fu
nction of thet yrep ress urem onitoring sys‐
tem
The sy stem checks thet yrep ressur eand the
tyr etemperatur eofthe tyres fitted tothev ehicle
by means of atyrep ressu resensor.
Ne wt yrep ressur esensors, e.g. in winter tyres,
ar ea utomaticall ytaught-in thef irst tim etheya re
driven.
If th er eisas ubstantia lpressur elossorift he
tyr etemperatur eisexcessive, awarning will be
given:
R Viad ispla ymessages (→ page458).
R Viat he h warning lam pinthe instrument
clus ter( →pag e488).
It is thed rive r's responsibility tosetthe tyre
pressur etotherecommended cold tyr epressure
suitable fort he operating situation. Se tthe tyre
pressur efor cold tyres using atyrep ressu re
ga uge. Notethat thec orrect tyr epressur efor
th ec urrent operating situatio nmustfirst be
ta ught-in tothet yrep ressur emonitoring sys‐
te m. In mos
tcases, thet yrep ressur emonitoring sys‐
te mw illa utom atically updat ethe ne wreference
va lues af tery ou ha vechanged thet yrep ressure.
Yo uc an,h owe ver,also updat ethe refere nce val‐
ues byrestartin gthe tyr epressur emonitoring
sy stem manually (→ page402).
Sy stem limitations
The sy stem ma ybeimpaired or ma ynotfunction
in thef ollowing situations:
R Ifth et yrep ressur eiss etincor rectl y.
R Ifth er eisas udden pressur eloss caused, for
ex ample, byaforeign object penetrating the
tyre.
R Ifth er eisam alfunction caused byano ther
ra dio signal source.
Mak esuretoo bservethef ollowing fur ther rela‐
te ds ubjec t:
R Notesont yrep ressur e(→pag e397)
Checking thet yrep ress urew itht he tyre
pressur emonitoring sy stem
Requ irement:
R The ignition is switched on. Wheels and tyres
399

*
NO
TEDama gecaused bythew rong fuel Even small amounts of
thew rong fuel could
re sult in damag etothe fuel sy stem, the
engine and thee mission control sy stem. #
Onlyrefuel using unleaded fuel that
con form stoEN2 28, or an equivalent
speci fication.
Fu el of this specification ma ycontain up to
10 %e thanol. Your vehicle is suitable foru se
wit hE 10 fuel.
Do no trefuel using:
R diesel
R E85, E100
R petrol containing me thano l(M15, M30,
M85 ,M100)
R petrol wit hadditives con tainin gm etal
If yo ua cciden tally refuel wit hthe wrong fuel: #
do no tswitc hthe ignition on. #
consult aqualified specialis tworks hop. Re
commende dfuel:th er ecommende doctane
number fory our vehicle can be found in the
instruction label in thef uel filler flap
(→ pag e160).
If th ea vailable fuel is no tsufficientl ylow in sul‐
phu r,th is can produce unpleasant odours.
S4 50 4MATIC: onlyrefuel using super unleaded
petrol wit hatleast 98 RON,ifyo uw ish toach‐
ie ve maximu mengine output. Alternatively ,you
can also refuel using premiu mgrade petrol with
at lea st95 RON.
Al lm odels: asatemporar ymeasure, if ther ec‐
ommended fuel is no tavailable, youm ayalso
use regular unleaded petrol wit hanoctane num‐
ber of at leas t91RON. This ma yreduce engine
output and increase fuel consum ption.
Ne verrefuel using petrol wit halowerRON.
Fu rther information on fuel can be found:
R atafilling station
R ataq ualified specialis tworks hop
Information on additives in petrol
Obser vethen otes on service products
(→ pag e421). *
NO
TEDama gecaused bynon-app roved
additives Even small amounts of
thew rong additive
ma ylead tomalfunctions occur ring. #
Only ad dcleaning additives recommen‐
ded byMercedes-Benztot he fuel. Mercedes-Benz
recommends that youu se
brand-name fuels wit hadditives.
The fuel grade available in som ecountries may
no tbes ufficient. Residue could buildupint he
fuel injection sy stem as aresult. In this case, in
consultation wit haMercedes-Benz Service
Cent re,the fuel ma ybemixed wit hthe cleaning
additiv erecommende dbyMercedes-Benz. Be
sur etoo bservethen otes and mixing ratios
speci fied on thec ontainer.
Ta nk capacit yand reser vefuel le vel
The total capacity of thef uel tank ma yvary,
dependin gonthevehicle equipment. Te
ch nica ldata 423

Displa
ymessages
Possible causes/consequences and M
MSolutions
T
!
÷ inoperative See Owner's
Manual *
EBD,A BS and ESP ®
arem alfunctioning.
Other driving and driving saf etys yst ems ma yalso be malfunctioning. &
WARNING Risk of skidding if EBD, ABS and ESP ®
are malfunctioning
If EBD, ABS and ESP ®
arem alfunctioning ,the wheels can loc kwhen braking and ESP ®
cann otcar ryout vehicle
st abilisation.
The steering capability and braking characteristic sarethus se verely impaired .The brakin gdista nce may
increase in an eme rgency braking situation .Inaddition, other driving saf etys yst ems ar eswitched off. #
Driv eonc arefull y. #
Have theb rake system checkedi mmediatel yataqualified specialis tworks hop. #
Driv eonc arefully. #
Consult aqualified specialis tworks hop immediatel y.
!
Turn on the ignition to
release the parking brake *
The red! indicator lam pislit.
Yo uh ave attem ptedtor elease thee lectric parking brak ewitht he ignition switched off. #
Switc hthe ignition on. Displa
ymessages and warning/indicator lamps 433