2012 MERCEDES-BENZ M-Class warning

i
Vehicles
equipped withMOExt endedtires
are not equi pped withaTIREFIT kitatthe
factory. Itis therefore recommended that
you addi tionally equipyou rvehicle witha
TIREF ITkit ifyou mount tiresthatdonot
feature run-flatpropert ies,e.g. winter tires.
A TIREF ITkit can beobtained froman
authoriz edMercedes- BenzCenter .
X Make surethathighway levelis
select ed25
(Y page 180).
X Stop the vehicle onsolid, non-slippery and
level ground, asfar away aspossible from
traff ic.
X Switc hon the hazard warning lamps.
X En gage theelectr icparkin gbrake manually
(Y page 156).
X Brin gthe fron twheels intothestraight-
ahead position.
X Move theDIRECT SELECT lever toP.
X Switch offthe engine.
X Vehicles withoutKEYLESS-GO: remove
the SmartK eyfrom theignition lock.
X Vehicles withKEYLESS-GO: openthe
driver's door.
The on-board electronic shave status 0,
which isthe same asthe SmartK eyhaving
been removed.
X Vehicles withKEYLESS-GO: removethe
Start /Stopbutton fromtheignition lock
(Y page 139).
X All occupants mustgetout ofthe vehicle.
Make surethatthey arenot endangered as
they doso.
X Make surethatnoone isnear thedanger
area while awheel isbeing changed.
Anyone whoisnot directly assisting inthe
wheel change should,forexample, stand
behind thebarrier.
X Get outofthe vehicle. Payattent ionto
traffic condition swhen doing so.
X Close thedriver's door.
X Unload heavyluggage. i
Only
operate thetire inflation compressor
using a12 Vsocket (Ypage 297), evenif
the ignition isturned off.
An emergency cut-offensures thattheon-
board electrical systemvoltage doesnot
drop toolow. Ifthe on-board electrical
system voltage istoo low, power tothe
socket sis automatically cutoff. This
ensures thatthere issufficient powerto
start theengine. TIREFIT
kit
Using theTIREFIT kit You
canusetheTIREFIT kittoseal small
punctures, particularly thoseinthe tire tread.
You canuseTIREFIT atoutside temperatures
down toÒ4 ‡(Ò20 †). G
WARNING TIREFIT
isalimited repairdevice. TIREFIT
cannot beused forcuts orpunctures larger
than approximately 0.16in(4 mm) andtire
damage causedbydriving withextrem elylow
tire inflation pressure, oron aflat tire, ora
damaged wheel.
Do not drive thevehicle undersuch
circumstan ces.
Contact thenearest authorized Mercedes-
Benz Center forassistance orcall Roadsi de
Assistanc e.
X Do not remove anyforeign objectswhich
have penetrated thetire, e.g.screws or
nails.
X Remove thetire seala ntbottle, the
accompanying "max.80km/h" stickerand
the tire inflation compressor fromthe
stowage wellunderneath thecargo
compartmen tfloor (Ypage 328).
25 Vehicles withtheAIRMATIC package. 330
Flat
tireBreakdown assistance

Do
not swit choff thetire inflation
com pressor during this ph ase.
X Allow thetire inflat ion compr essortorun
fo rf ive min utes. Thetireshould thenhave
att aine dapres sure ofat least 180k Pa
(1.8 bar/26 psi).
! Donot operate thetire inflation
compress orfor longer thaneight minutes
at atime without abreak. Itmay otherwise
overheat.
The tireinflation compress orcan be
operated againonceithas cooled down.
If apressure of180 kPa(1.8 bar/26 psi)has
been achieved afterfiveminutes, see
(Y page 332).
If apressure of180 kPa(1.8 bar/26 psi)has
not been achieved afterfiveminutes, see
(Y page 332).
Tire pressure ofat least 180kPa
(1.8 bar/26 psi)isnot reached If,
after fiveminutes, apressure of180 kPa
(1.8 bar/26 psi)hasnotbeen achieved:
X Switc hoff the tire inflation compress or.
X Unsc rewthefiller hose fromthevalve of
the faulty tire.
X Very slowly driveforwards orreverse
approximately 30ft(10 m).
X Pump upthe tire again. G
WARNIN
G If
after fiveminutes apressu reof180 kPa
(1.8 bar/26 psi)cannot beachie ved,thetire
is too badlydama gedtobe repa iredreliably
usi ng TIREFIT.
In this case TIREFIT cannotsealthetire
prope rly.
Do not drive anyfurther.
Contact thenearest authorized Mercede s-
Benz Center forassi stance orcall Roadsid e
Assistance. Tire
pressure of180 kPa(1.8 bar/
26 psi) isreache d X
Switch offthe tire infla tion compresso r.
X Unscrew thefiller hose fromthevalve of
the faultytire.
! After use,excess TIREFIT mayrunoutof
the filler hose. Thiscouldcaus estains.
Therefo re,placethe filler hose inthe plastic
bag whichcontained theTIREFIT kit.
X Stow thetire seal antbottle andthetire
infla tion compresso r.
X Pull away immediately . G
WARNING Do
not exceed avehicl espee dof 50 mph
(80 km/h). ATIREFIT repairisnot designed to
operate athigher speeds.
The sticker mustbeattached onthe
instrument clusterwhereitwill beeasil yseen
by the driver.
Vehicle handling characteristics ofaTIREFIT
repaired tiremay change. Adaptyourdriving
accordingly.
X Stop after driving forapproximately ten
minutes andcheck thetire pressure with
the tire inflation compressor. G
WARNING If
tire inflation pressure hasfallen below
130 kPa(1.3 bar/26 psi)donot cont inue to
drive thevehicle.
Park yourvehicle safelyawayfrom the
roadwa yand cont actthe nearest authorized
Mercedes-Benz CenterorRoad side
Assistance.
Have thedamaged tirereplaced.
X Correct thetire pressure ifit is at least
130 kPa(1.3 bar/20 psi)(fortherequired
value s,see theTire andLoading
Information placardonthe driver's side
B-pillar orthe tire pressure tableinside the
fuel filler flap). 332
Flat
tireBreakdown assistance

X
To incre ase thetire pres sure :sw itch on
the tire inflation comp ressor . E
Pressu rerelease button
F Pressu regaug e
X To reduc ethe tire pres sure :pre ss
pre ssu rerelease button Eonthe filler
hos e.
X Stow thetire sealant bottle and thetire
infl ation comp ressor .
X Driv eto the nearestworkshop andhave the
tire changed there.
X Have thetire sealant bottlereplaced as
soon aspossible ataquali fiedspecialist
workshop, e.g.atan authorized Mercedes-
Benz Center. H
Environmental
note Have
theused tiresealant bottledisposed of
professionally, e.g.atan authorized
Mercedes-B enzCenter.
X Have thetire sealant bottlereplaced every
four years ataquali fiedspecialist
workshop, e.g.anauthorized Mercedes-
Benz Center. Changing
awhee land mountin gthe
spare wheel
Preparing thevehi cle G
WARNING The
wheeland tiresize ofthe emerge ncy
spa rewhe el/sp arewhe elmay differtothat of
the damaged wheel.Whenusingan
emergenc yspare wheel/spare wheelthe
handling character isticsofthe vehicle may
change.
Adapt yourstyle ofdriving accordingly.
Never operate thevehicle withmore thanone
emergenc yspare wheel/spare wheelthat
differs insize.
Only useanemergenc yspare wheel/spare
wheel ofadiffering sizebriefly anddonot
switch offESP ®
.
When usinganemergenc yspare wheel, you
must notexceed themaximum speedof
50 mph (80km/ h). G
WARNING Have
theemergenc yspare wheel/spare
wheel replaced withanew wheel assoon as
possible ataquali fiedspecialist workshop
which hasthenecessary specialistknowledge
and tools tocarry outthework required.
Mercedes-B enzrecommen dsthat youusean
authorized Mercedes-B enzCenter forthis
purpose. Inparticular, workrelevant tosafety
or on safety-related systemsmustbecarried
out ataquali fiedspecialist workshop. i
Vehicles
withoutaspare wheel/
emergenc yspare wheel arenot equipped
with atire-c hange toolkitatthe factor y.For
more informat iononwhich toolsare
required toperform awheel change onyour
vehicle, e.g.wheel chock,lug wrench or
alignment bolt,consult anauthorized
Mercedes-B enzCenter. Flat
tire
333Breakdown assistance Z

sides
ofthe vehicle. Thejack saddle mustbe
placed centrally under thejacking point.The
jack must alwaysbe vertical wheninuse,
especiall yon inclines ordeclines.
The jack isintended onlyforlifting thevehicle
briefly forwheel changes. Itis not suited for
performing maintenance workunder the
vehicle. Tohelp avoid personal injury,usethe
jack onlytolift the vehicle duringawheel
change.
Never getbeneath thevehicle whileitis
supported bythe jack. Keep hands andfeet
awa yfrom thearea under thelifted vehicle.
Always lowerthevehicle ontosufficient
capacity jackstandsbefore working underthe
vehicle.
Always firmlyengage theparking brakeand
block thewheels withwheel chocks orother
sizable objects beforeraising thevehicle with
the jack. Donot disengage theparking brake
while thevehicle israised.
Make surethattheground onwhich the
vehicle isstanding andwhere youplace the
jack issolid, levelandnotslippery .If
nece ssary,us ealarge underlay.O ns lippery
surfac es,such astiled floors,you should use
a non -slip under lay,forexam plearubber mat.
Do not use wooden blocksor similar objects
as ajac ku nde rlay.Othe rwise, the jack may
not beableto ach ieve its load -be aring
cap acityifit is not atits fullhei ght.
Nev ersta rtthe engi newhen the vehicleis
rai sed .
Als oob ser vethe notes onthe jack. X
Usi nglug wre nch :,loose nthe bolts on
the wheel youwish tochange byabout one
full turn. Donot unscrew thebolts
completely.
The jackin gpoints arelocated justbehind the
wheel housings ofthe front wheels andjust
in front ofthe wheel housings ofthe rear
wheels (arrows). G
WARNING The
jack isdesigned exclusively forjackin gup
the vehicle atthe jackin gpoints. Thejack
saddle mustbeplaced centrally under the
jackin gpoint.
If you donot position thejack correct lyin the
jackin gpoint, thevehicle canfalloffthe jack
and seriously orfatally injureyouorothers.
! The jack isdesigned exclusively for
jackin gup the vehicle atthe jackin gpoints.
Otherwise, yourvehicle couldbedamaged.
X Take theratchet wrench outofthe vehicle
tool kitand place iton the hexagon nutof
the jack sothat theletters AUFarevisible. X
Position jack=atjackin gpoint ;. Flat
tire
335Breakdown assistance Z

The
alignment boltonthe jack must be
insert edinto theinten dedjackingpoint
hole. X
Make surethatthebase ofthe jack is
positioned directlyunderthejack ingpoint.
X Turn ratchet wrench ?until jack=sits
completely onjack ingpoint ;and the
base ofthe jack liesevenly onthe ground.
X Turn ratchet wrench ?until thetire is
raised amaximum of1.2 inches (3cm) off
the ground.
Removing awhee l X
Unscrew theuppermost wheelbol t
comple tely.
X Screw alignment bolt: into thethread
instea dof the whe elbol t.
X Unscrew theremai ningwheelbol tsful ly.
! Donot placewhe elbol tsinsand oron a
dirty surface.The boltand wheelhu b
thre adscou ldothe rwisebe dama gedwh en
yo uscre wthem in. X
Re mov ethe wheel.
Mou nting anew wheel G
WAR
NING Always
replacewheel boltsth at are damage d
or rust ed.
Nev erapply oilorgreas eto wheel bolts.
Dam aged wheel hubthreads should be
repair edimm ediat ely.Donot continue to
driv eunde rth ese circum stanc es!Cont actan
auth orizedMerc edes- BenzCent eror call
Roadside Assistance.
Inc orrec twheel bolts orimproperly tightened
wheel boltscancause thewheel tocome off.
This could cause anaccident. Makesureto
use thecorrect wheelbolts. G
WARNING Only
usegenuine Mercedes-Ben zwheel bolts.
Other wheel boltsmaycome loose.
Do not tighten thewheel boltswhen the
vehicle israised. Otherwise, thevehicle could
fall offthe jack. :
Wheel boltsforallwheels suppliedbythe
factory
2 Wheel boltsforthe "Minispare"
emergency sparewheel
! Always usewheel bolts;tomount the
"Minispare" emergencysparewheel. Using
other wheel boltstomount the"Minispare"
emergency sparewheel coulddamage the
brake system. 336
Flat
tireBreakdown assistance

G
WARNING Make
suretouse theorigi nallength wheel
bolts when remou ntingtheorigi nalwhee l
after ithas been repaired.
X Cle anthe whee land whee lhub contact
surfa ces.
! Toprevent damagetothe paintwork, hold
the whee lsecure lyaga inst thewhee lhub
whi lescrewi nginthe first whee lbolt. X
Slide theemerge ncysparewhee lonto the
ali gnment boltandpushit on.
X Tigh tenthewhee lbolts untiltheyare
finger-tigh t.
X Unscrew thealignment bolt.
X Tigh tenthelastw heel boltuntil itis finger-
tight.
Low ering thevehicle X
Place theratchet wrench ontothehexagon
nut ofthe jack sothat theletters ABare
visible.
X Turn theratchet wrench untilthevehicle is
once again standing firmlyonthe ground.
X Place thejack toone side. X
Tighten thewheel boltsevenly ina
crosswise patterninthe sequence
indicated (: toA). Thetighten ingtorque
must be110 lb-ft (150 Nm). G
WARNING Have
thetighten ingtorque checked
immediately afterawheel ischanged. The
wheels couldcome looseifthey arenot
tighten edtoatorque of110 lb/ft
(150 Nm).
X Turn thejack back toits initial position and
store ittogether withtherest ofthe tire-
change toolkitinthe cargo compartmen t.
Vehicles withanemergency sparewheel:
X Wrap thedefective wheelinthe protect ive
film included withtheemergency spare
wheel andtransport thewheel inthe cargo
compartmen t.
or
X Depending onthe size ofthe wheel, you
may alsobeable tosecure thedefective
wheel inthe emergency sparewheel well.
In this case, youmust remove thestowage
tray from theemergency sparewheel well
and store itsecurely inthe cargo
compartmen t. i
When
youaredriving withthecollapsibl e
spare wheel mounted, thetire pressure
loss warning systemorthe tire pressure
monitorin gsystem cannotfunction
reliabl y.Only restart thetire pressure loss
warning system/t irepressure monitorin g Flat
tire
337Breakdown assistance Z

system
whenthedefective wheelhasbeen
replaced withanew wheel.
Vehicles withtirepressure controlsystem:
all wheels mounted mustbeequip pedwith
function ingsensors. Thedefective wheel
should nolonger beinthe vehicle. MOExtended
tires(tires withrun-flat
propert ies)
MOExt ended tires(tires withrun-flat
properties) allowyou tocont inue driving your
vehicle evenifone ormore tiresareentirely
deflated.
MOExt ended tiresmayonlybeused in
conj unction withtheactivated tirepressure
loss warning systemorwith theactivated tire
pressure monitoring system.
The maximum permissible distancewhich
can bedriven inrun-flat modedepends onthe
load inthe vehicle. Youcandrive 50miles
(80 km) ifthe vehicle ispartiall yladen and
18 miles (30km) ifit is fully laden.
The maximum permissible distancewhich
can bedriven inrun-flat modeiscounted from
the moment thetire pressure losswarning
appea rsinthe multifunction display.
You must notexceed amaximum speedof
50 mph (80km/h). G
WARNING The
handling characteristics ofyour vehicle
deteriorate inrun-flat mode,forexample:
R when cornering
R when braking
R when accelerating rapidly
Adapt yourdriving styleaccordingly andavoid
sudden changes indirection andsudden
acceleration, aswell asdriving overobstacles
(i.e. curbs, potholes), anddriving off-road.
This isparticularly thecase when thevehicle
is heavily laden.
The maximum permissible distancethatcan
be driven inrun-flat modedepends toalarge
extent onthe loads placed onthe vehicle. It can
beshorter duetohigh speeds, aheavy
load, sudden changes indirection, theroad
surface condition, outsidetemperature, etc.,
or further ifyou drive carefully and
conservatively.
Do not cont inue todrive inrun-flat modeif:
R you hear banging noises.
R the vehicle startstoshake.
R you seesmoke andsmell rubber.
R ESP ®
is intervenin gconst antly.
R there aretears inthe sidewa llsofthe tire.
Aft erdriving inrun-flat mode,youmust have
the wheel( s)checked fordamage ata
qual ified speciali stworkshop whichhasthe
necessary specialistknowledge andtools to
carry outthework required. Thedefective tire
must bereplaced inevery case.
Mercedes-Benz recommendsthatyouusean
authorized Mercedes-Benz Centerforthis
purpose. Inparticular, workrelevant tosafety
or on safety-related systemsmustbecarried
out ataqual ified speciali stworkshop. i
When
replacing oneorall tires, make sure
that youonly usetires marked
MOExt ended andofthe specified sizefor
the vehicle. Bat
tery Importa
ntsafety notes
In order forthe battery toachieve the
maximum possibleservicelife,itmust always
be sufficiently charged.
! Have thebattery checked regularlyata
qual ified speciali stworkshop, suchasan
authorized Mercedes-Benz Center.
Adhere tothe service intervals indicated in
the service booklet orask aqual ified
speciali stworkshop, suchasan authorized
Mercedes-Benz Center.
Have thebattery chargechecked more
frequently ifyou usethevehicle mainlyfor 338
Bat
teryBreakdown assistance

short
tripsorifyou leave itstanding idlefor
a lengthy period.
Only replace abattery withabattery thathas
been recommended byMercedes-Benz .
Consult anauthorized Mercedes-Benz Center
if you wish toleave yourvehicle parkedfora
long period oftime. G
WARNING Comply
withsafety precautions andtake
protective measureswhenhandling batteries. Risk
ofexplosion Fire,
naked flames and
smoking areprohibited
when handling thebattery.
Avoid creating sparks. Battery
acidiscaustic.
Avoid contactwith theskin,
eyes orclothing.
Wear suitable protective
clothing, inparticular
gloves, anapron andaface
mask.
Immediately rinseacid
splashes offwith clean
water. Consult adoctor if
necessary. Wear
eyeprotection . Keep
children away. Observe
thisOperator's
Manual . H
Environmental
note Batteries
containdangerous
substances. Itis agai nstthe
law todispose ofthem with
the household rubbish.They must
becollected separately
and recycled toprotect the
environmen t. Dispose
ofbatteries inan
environmen tallyfriendly
manner. Returndischarged
batteries toaqual ified
speciali stworkshop, e.g.an
authorized Mercedes-Benz
Center, ortoaspecial
collection pointforold
batteries. G
WARNING Failure
tofollow theseinstruct ionscanresult
in severe injuryordeath.
Never leanover batteries whileconnecting.
You might getinjured.
Battery fluidcontains sulfuric acid.Donot
allow thisfluid tocome incont actwith eyes,
skin orclothing. Incase itdoes, immediately
flush affected areawithwater andseek
medical helpifnecessary.
Ab attery will also produce hydro gengas,
whic his flam mable andexplosiv e.Keep
flam esorspar ksaway from battery, avoid
impr oper connectionof jum per cable s,
smo kinget c. G
WAR
NING Do
notp lace anymetalobje ctson the batt ery
as this could result inashor tcircuit .
Use leak- proof batteries onlytoavoid therisk
of acid burnsin the even tof an acc ident .
Take carethatyoudonot becom estat ically
char ged, e.g.bywearin gsynt het icclo thingor
rubb ing again sttextiles .For this reason, you
also should notpull orpush thebattery over
carpets orother synthet icmaterials.
Never touchthebattery first.First, touch the
outside bodyofthe vehicle inorder torelease
any possible electrostaticcharges.
Do not rub thebattery withrags orcloths. The
battery couldexplode iftouched dueto Bat
tery
339Breakdown assistance
Z