2012 MERCEDES-BENZ M-Class roof

If
the vehicle isvery dirty, pre-wa shitbefore
cleaning itin an automa ticcar was h.
! Incar was hes with atowing mechanism,
make surethattheautoma tictransmission
is in transmission positionN, otherwis ethe
vehicle couldbedama ged.
R Vehicle swith aSmartKey:
Do not remove theSmartKey fromthe
ignition lock.Donot open thedriver's
door orfront-passenger doorwhen the
engine isswitched off.Otherwise ,the
automa tictransmission selectspark
positio nP automa ticallyand locks the
whee ls.You canprevent thisbyshifting
the automa tictransmission toN
beforeha nd.
R Vehicle swith KEYLESS- GO:
Do not open thedriver's doororfront-
passe ngerdoor when theengine is
switched off.Otherwise ,the automa tic
transmission selectsparkpositio nP
automa ticallyand locks thewhee ls.
Observe thefollo wing tomake surethatthe
automa tictransmission staysinpositio nN:
X Make surethevehicle isstationary andthe
ignition isswitched off.
X Turn theSmartKey topositio n
2 (Y page 139)inthe ignition lock.
Use theSmartKey insteadofthe Start/
Stop button onvehicle swith KEYLESS- GO.
X Depress andhold thebrake pedal.
X Shift theautoma tictransmission to
positio nN.
X Rel ease thebrake pedal.
X Rel ease theelectric parking brake.
X Switch offthe ignition andleavethe
SmartKey inthe ignition lock.
! Make surethat: R
the side window sand thesliding sunroof
are fullyclosed.
R the ventilation/hea tingisswitched off
(the OFF button hasbeen pressed ).
R the windshi eldwiperswitch isin positio n
0.
Otherwise ,the vehicle mightbedama ged.
After using anautoma ticcar was h,wip eoff
wax from thewindshi eldand thewiper
bla des. Thiswillprevent smearsandreduce
wip ing noises causedby residu eon the
windshi eld.
Washing byhand In
some countries, washing byhand isonly
all owed atspecia llyequ ippe dwas hing bays.
Observe thelega lrequi rements inall
countries concerned.
X Do not use hotwater anddonot was hthe
vehicle indirect sunlight.
X Use asoft sponge toclean.
X Use amild cleaning agent,suchasacar
shampo oapp roved byMercedes-Benz.
X Thorou ghlyhose down thevehicle witha
gentle jetofwater.
X Do not point thewater jetdirectly towards
the airinlet.
X Use plenty ofwater andrinse outthe
sponge frequently.
X Rinse thevehicle withclean water anddry
thoroughl ywith achamois.
X Do not letthe cleaning agentdryonthe
pai ntwork.
When usingthevehicle inwinter, remove all
traces ofroad saltdepos itscareful lyand as
soon aspossi ble.
Pow erwashe rs G
WARNING Do
not use powe rwasher swith circular -jet
no zzles (dirt grinders )to cle anyour vehicle,in
part icular thetir es. You couldot her wise
damage thetir es and caus ean acc iden t. Car
e
319Maintenance and care Z

!
Alway smaintain adistance ofat least
11.8 in(30 cm) between thevehicle andthe
power washer nozzle.Information about
the correct distance isavail able from the
equi pment manufacturer.
Move thepower washer nozzlearound
when cleaning yourvehicle.
Do not aim directly atany ofthe followi ng:
R tires
R door gaps, roofgaps, joints etc.
R electrical component s
R battery
R conn ectors
R lights
R seals
R trim elements
R ventilation slots
Damaged sealsorelectrical component s
can lead toleaks orfailu res.
Cle aning thewhee ls !
Donot use acidic wheelcleaning products
to remove brakedust.Thiscould damage
wheel boltsandbrake component s.
! Donot park thevehicle foranextended
period straight aftercleaning it,particula rly
after having cleaned thewheels withwheel
cleaner. Wheelcleaners couldcause
increased corrosionofthe brake discsand
brake pads/li nings.Forthis reason, you
should driveforafew minutes after
cleaning. Brakingheatsthebrake discsand
the brake pads/li nings,thusdrying them.
The vehicle canthen beparked.
Cle aning thepaintwork Scratc
hes,corrosive deposits,areasaffected
by corrosion anddamage causedby
inadequ atecare cannot always becompletely
repaired .Ins uch cases, visitaqualif ied
spec ialist workshop,e.g. an auth orized
Mer cedes- BenzCent er. X
Remove impurities immediately, where
possible, whilstavoiding rubbingtoohard.
X Soak insectremains withinsec tremover
and rinse offthe treat edareas afterwards.
X Soak birddroppings withwater andrinse
off the treat edareas afterwards.
X Remove coolant,brake fluid,treeresin,
oils, fuels andgreases byrubbing gently
with aclot hsoaked inpetroleum etheror
lighter fluid.
X Use tarremover toremove tarstains .
X Use silicone remover toremove wax.
! Donot affix:
R stic kers
R films
R magnet icplates orsimilar items
to painted surfaces. Youcould otherwise
damage thepaintwork .
If water nolonger forms"beads" onthe paint
surface, usethepaint careproduct s
recom mended andapproved byMercedes-
Ben z.This isthe case approximat elyevery
thr ee tofive mont hs,depending onthe
climate conditions andthecare product used.
If dirt has penet rated thepaint surface orthe
paint hasbecome dull,thepaint cleaner
recom mended andapproved byMercedes-
Ben zshould beused.
Do not use these careproducts inthe sun or
on the hood while thehood ishot.
X Use asuitable touch-up stick,e.g. MB
Touch-Up Stick,to correct smaller areasof
paint damage quicklyandprovisionally .
Matt efinish care If
your vehicle hasaclear matte finish,
observe thefollowing instructionsinorder to
avoid damage tothe paintwork dueto
incorrec tcare.
These notesalsoapply tolight alloy wheels
with aclear matte finish. 320
CareMaintenance and care

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

(100
km)as they onlyreach theirfull
perfo rmanceafter thisdistan ce.
R Do not use tiresthat areexcessively worn
as the tire tract ion onwet road surfac es
decr eases significantlywhen thetread
depth isless than 1
/ 8 inc
h(3 mm).
R Replace thetiresafter sixyears atthe
latest ,regardles sof wear. Thisalso applies
to the spare wheel/em ergencyspare
wheel.
The servicelife oftire sdepends onthe
followin gfact orsamong stothe rthings:
R driving style
R tire pressure
R mileage MOExtended
tires(tires withrun-flat
proper ties)
MOExt ended tires(tires withrun-flat
properties) allowyoutocont inue driving your
vehicle evenifone ormore tiresareentirely
deflated.
MOExt ended tiresmaybeused onlyin
conj unction withtheactivated tirepressure
loss warning systemorthe activated tire
pressure monitorin gsystem andonly on
wheels specifically testedbyMercedes-Ben z.
You willfind notes ondriving with
MOExt ended tiresinthe "Breakdown
assistance" section(Ypage 338). Winter
operation Please
bearthefollow inginmind
At the onset ofwinter, haveyourvehicle
winterproofed ataqual ified specialist
workshop, e.g.atan authorized Mercedes-
Benz Center.
Observe thenotes inthe "Cha nging awheel"
section (Ypage 374). Driving
withsumm ertires
At temperatures below45‡(+7 †), the
elasticity ofsummer tiresandtherefore also
tract ionand braking capabilityare reduced
considerably —equip your vehicle with
M+S tires.Using summer tiresatvery cold
temper aturescouldcause tearstoform ,
ther eby damaging thetires perman ently.
Mercede s-Benz cann otaccept responsibility
for this type ofdamage. M+S
tires
At temper aturesbelow45‡(+7 †), use
winter tiresorall-season tires.Both types of
tire areidentified bythe M+S marking.
Only winter tiresbearing thei snowflake
symbol inaddition tothe M+S marking
provide thebest possible gripinwintry road
condit ions.Onlythese tireswillallow driving
safety systems suchasABS andESP®
to
funct ionoptimally inwinter, asthese tires
have been designed specifically fordriving on
snow.
Use M+S tiresofthe same make andtread on
all wheels tomaintain safehandling
charact eristics. G
WARNIN
G M+S
tireswithatread depth ofless than 1
/ 6
inch (4mm) must bereplaced. Theyareno
longer suitable forwinter operation.
Always observe themaximum permissible
speed specified forthe M+S tiresyouhave
mounted.
Once youhave mounted thewinter tires:
X Check thetire pressures (Ypage 357).
X Restart thetire pressure losswarning
system (Ypage 357). G
WARNIN
G If
you mount thespare wheel whendriving
with M+S tires, bearinmind thatdriving
stability willbeimpaired duetounstable 352
Winter
operationWheels and tires

G
WARNING The
tirepressu reloss warni ngsystem does
not provid eawar ning forwrongl ysele cted tire
infla tion pressu res.Alwa ysadju sttire
infla tion pressu reaccordi ngtothe Tire and
Load ingInformation placard onthe drive r's
door B-pillaror on the tire infla tion pressu re
lab elloca tedonthe insid eof the fuel filler flap .
The tirepressu reloss warni ngsystem does
not repl ace regu larchecks ofthe tire infla tion
pressu ressince agrad ualpressu reloss in
more thanonetirecannot bedetected bythe
tire pressu reloss warning system.
The tirepressu reloss warni ngsystem isnot
abl eto issu eawar ning duetoasud den
drama ticloss oftire infla tion pressu re(e.g.
tire blow outcaus edbyaforeig nobjec t).In
this case bring thevehicle toahalt bycarefully
applying thebrakes andavoiding abrupt
steer ingmaneuver s.
The func tionofthe tire pressure losswarning
system islimited ordelayed if:
R snow chains aremount edtoyour vehicle's
tires.
R road condition sare wintr y.
R you aredriving onsand orgravel.
R you adopt avery sport ydriving style
(corn ering athigh speeds ordriving with
high rates ofaccelerat ion).
R you aretowing avery heavy orlarge trailer.
R you aredriving withaheavy load(inthe
vehicle oron the roof).
Resta rting the tirepr essure loss
warning system Restart
thetire pressure losswarning system
if you have:
R chang edthe tire pressure
R chang edthe wheels ortires
R mount newwheels ortires
X Befor erest artin g,con sult theTire and
Loading Informat ionplacard onthe
B- pillar onthe driver's sideorthe tire pressure
tableonthe inside ofthe fuel filler
flap toensure thetire pressure inall four
tires isset corr ectlyfor the curren t
operatin gcon dition s.
X Observe thenotesinthe sect ionontire
pressures (Ypage 353). G
WARN
ING The
tirepressure losswarning systemcan
only givereliable warning sif you have setthe
corr ecttire pressure.
If an incor recttirepressure isset, these
incor rectvalues willbemonit ored.
At ire with insufficientpress ureresult sin
vehic leinst ability whendriving,thus
inc reasin gthe risk ofan acc ident .
X Make surethattheSmartKey isin
posit ion2(Y page 139)int he ignition lock.
X Press the= or; button toselect the Serv. menu.
X Press the9 or: button toselect Tire
Pressure .
X Press thea button.
The Run
Flat Indicator Active Press
'OK'toRestart message
appea rsinthe multifunction display.
If you wish toconfirm therestar t:
X Press thea button.
The Tire
Pressure NowOK? message
appea rsinthe multifunction display.
X Press 9or: toselect Yes .
X Press thea button.
The Run
Flat Indicator Restarted message
appearsinthe multifunction
displa y.
Aft erateach-in period,thetire pressure
loss warning systemwillmonitor theset
tire pressures ofall four tires. 358
Tire
pressureWheels and tires

Maximum
loadrating
The maximu mload rating inkilograms or
pounds isthe maximum weightforwhich a
tire isapproved. Maximu
mperm issible tirepressur e
Maximum permissible tirepressure forone
tire. Maximu
mload onone tire
Maximum loadonone tire. This iscalculated
by dividing themaximum axleload ofone axle
by two. PSI
(pounds persquar einch)
As tand arduni tofm easure fortire pressure. Aspect
ratio
Relationship betweentireheight andtire
width inpercen t. Tir
epr essure
This ispressure insidethetire applying an
outward forceto each square inchofthe tire's
surface. Thetirepressure isspecified in
pounds persquare inch(psi), inkilopascal
(kPa) orinbar. Thetirepressure shouldonly
be corr ectedwhen thetires arecold. Tir
epr essure ofcold tires
The tires arecold:
R ifthe vehicle hasbeen parked without
direct sunlight onthe tires foratleast three
hours and
R ifthe vehicle hasnotbeen driven morethan
1 mile (1.6km). Tr
ead
The part ofthe tire that comes intocon tact
with theroad. Bead
The tirebead ensures thatthetire sits
securely onthe wheel. Thereareseveral steel
wires inthe bead topreven tthe tire from
comin gloose fromthewheel rim. Sidewall
The part ofthe tire between thetread andthe
bead. Weight
ofoptional extras
The combin edweight ofthose option alext ras
that weigh morethanthereplaced standard
part andmore than2.3kilograms (5lbs).
These optionalext ras, such ashigh-
perform ancebrakes, levelcontrol, aroof rack
or ahigh-perf ormancebatter y,are not
included inthe curb weight andaccesso ry
weight. TIN
(Tire Identificat ionNum ber)
This isaunique identifierwhich canbeused
by atire manufact urertoident ifytires, for
example foraproduct recall,andthus ident ify
the purchasers. TheTINismade upofthe
manufact urer'sidentitycode, tiresize, tire
type code andthemanufact uringdate. Load
bearing index
The load bearing index(alsoloadindex) isa
code thatcontains themaximum loadbearing
capacity ofatire. Definition
ofter ms fortires and loading
373Wheels and tires Z

All
mod els Gr
ound clearance 8.
0in (20 2mm ) Tu
rning circle 38
.7ft(11 .80m) Ma
xim um roof
load Max
imum 220lb
(10 0kg ) Tr
ailer towhitch Mou
nting dim ension s G
WAR
NING On
lyhave atrailer tow hit ch retrofitted ata
qualif iedspec ialist workshopwhic hhas the
ne ces sary specialist knowled geand tools to
car ryout thework required .Mercedes- Benz
recom mends thatyouuseanauthorized
Mercedes- BenzCenter forthis purpose. In
particular, workrelevant tosafety oron
safety-r elatedsystems mustbecarried outat
a qualified specialist workshop.
! Ifyou have atrailer towhitchretr ofitt ed,
changes tothe cooling systemanddrive
train maybeneces sary,depending onthe
vehicle type.
If you have atrailer towhitchretr ofitt ed,
observe theanchor agepoint son the
chassis frame. An
chorage pointsforthe trailer towhitch
(example)
: Anchorage points
; Rear axlecenterline Tr
ailer loads
Missing valueswerenotavailable attime of
going toprint . All
models Perm
issible trailer load,
unbra ked Perm
issible trailer load,
brak ed34 Maxim
umdrawbar
noseweig ht35 Perm
issible rearaxle
load when towing atrail er 34
At ami nim um gradient-c limbi ngcap ability of12% fromastandstill.
35 The drawba rnoseweight isnot included inthe trailer load. Tr
ailer towhitch
391Technical data Z