2012 MERCEDES-BENZ M-Class tire size

Tire
pres sure
Ca lling up(on-bo ardcomp uter)..... 359
Che cking manually ........................ 357
Displ aymessa ge............................ 263
Maxi mum ....................................... 356
Notes ............................................. 355
Not reach ed(TIR EFIT) .................... 332
Press ureloss warning .................... 357
Rea ched (TIREFIT) .......................... 332
Reco mmended ...............................353
Tire pressure monitoring system
Function/notes ............................. 359
Res tarting ...................................... 361
Warni nglamp ....... ....... .............. ..... 280
Tires
Aspect ratio(definitio n)................. 373
Averag ewei ght ofthe vehi cle
occup ants(definitio n).................... 371
Bar (definitio n)............................... 371
Cha racteri stics.............................. 371
Che cking ........................................ 351
Definiti onofterms ......................... 371
Direction ofrotatio n...................... 375
Displ aymessa ge............................ 263
Distrib utionofthe vehicle
occupants (definition) .................... 374
DOT, TireIdentifi cationNumber
(TIN) .................. ...... ................ .......3 70
DOT (Depa rtment of
Transp ortation)(de finitio n)............ 371
GAWR (Gross Axle Weight Rating)
(de finitio n)..................................... 372
GTW (Gross TrailerWei ght)
(de finitio n)..................................... 372
GVW (Gross VehicleWei ght)
(de finitio n)..................................... 372
GVW R(G ross VehicleWei ght
Ra ting) (definitio n)......................... 372
Importa ntsafe tynotes .................. 350
Increase dvehi cleweight due to
optio nalequ ipme nt(de finitio n)...... 372
Kil opa scal (kPa)(de finitio n)........... 372
Lab eling (ove rview )........................ 367
Load bearing index (definitio n)...... 373
Load index ..................................... 370
Load index (definitio n)................... 372
Maxi mum loaded vehicleweight
(de finitio n)..................................... 372Maxi
mum loadon atire
(de finitio n)..................................... 373
Maxi mum permi ssibletire
press ure(definitio n)....... .............. ..373
Maxi mum tireload......................... 365
Maxi mum tireload(de finitio n)....... 373
Optio nalequ ipme ntwei ght
(de finitio n)..................................... 373
PSI (pounds persquare inch)
(de finitio n)..................................... 373
Rep lacing ....................................... 374
Service life..................................... 351
Side wall(de finitio n)....................... 373
Speed rating(definitio n)................ 372
Storing ........................................... 375
Structure andchara cteristics
(de finitio n)..................................... 371
Temp erature.................................. 367
TIN (Tire Identifi cationNumber)
(de finitio n)..................................... 373
Tire bead(definit ion)...................... 373
Tire press ure(definiti on)................ 373
Tire press ures(recom mended )...... 371
Tire size (data) ............................... 375
Tire size designatio n,loa d-bea ring
capa city, speedrating .................... 368
Tire tread ....................................... 351
Tire tread (definitio n)..................... 373
Total loadlim it(de finitio n)............. 374
Tracti on......................................... 366
Tracti on(de finitio n)....................... 374
Trea dwear ..................................... 366
TWR (permissi bletrail erdra wba r
nosew eight) (definitio n)................. 374
Uniform TireQualityGrading
Standard s...................................... 366
Uniform TireQualityGrading
Standard s(definit ion).................... 371
Unla denweight (definiti on)............ 372
Wea rindi cato r(definit ion)............. 374
Whee lrim (defin ition).................... 372
see Flat tire
Top Tether ............................................ 58
Towi ng
Importa ntsafe tygui del ines ........... 343
Install ingthe towi ngeye................ 343
Rem oving thetowi ngeye. .............. 344 18
In
dex

Vehi
cle dime nsions........................... 390
Vehic leemerge ncylocking ................ 80
Vehic leiden tification number
see VIN
Vehic leiden tification plate.............. 381
Vehic lelev el(dis play messag e)....... 258
Vehic letool kit.................................. 328
Video (DVD) ..................... ................... 230
VIN ...................................................... 381W
Warning
andindicator lamps
ABS ............................ .................. .. 272
Brakes ........................................... 271
Che ckEngine ................................. 276
Coo lant .......................................... 277
Distance warning ........................... 279
DISTRONI CPLUS ........................... 279
ESP ®
.............................................. 273
ESP ®
OFF .......................................274
Fuel tank ............................... 276,277
Overvi ew.......................................... 30
PASSENGER AIRBAG OFF
indi cator lamp .................................. 44
Res erve fuel....... ....... ............. 276,277
Seat belt........................................ 269
SRS ............................ .................... 275
Tire press uremonitor .................... 280
Warranty ............................................ 381
Washer fluid
Displ aymessa ge............................ 267
see Winds hieldwa sher system
Whee lbol ttight ening torque ........... 337
Whee lcho ck...................................... 334
Whee ls
Cha nging awheel .......................... 333
Che cking ........................................ 351
Cl eani ng....... ....... ..................... ...... 320
Importa ntsafe tynotes .................. 350
Interchangi ng/changing................ 374
Mou nting awheel .......................... 336
Rem oving awheel .......................... 336
Storing ........................................... 375
Tig htening torque....... .................... 337
Whee lsize/ tires ize ....................... 375Windo
wcurtain airbag
Displ aymessa ge............................ 246
Opera tion............ ...... .......................4 4
Windo ws
Cl eani ng...... ...... ............................. 321
see Side windows
Windshi eld
Defrosting ...................................... 131
Infrared reflective .......................... 309
Winds hieldwasher system.............. 315
Notes ............................................. 390
Winds hieldwiper s
Problem (malfunction) ................... 120
Rea rwindow wiper........................ 118
Rep lacing thewiper blades ............ 119
Switchi ngon/off ........................... 118
Winte rdriving
Imp orta ntsafety note s.................. 352
Slip pery road surfaces................... 162
Snow chains.................................. 353
Winte roperatio n
Ra dia tor cover ............................... 313
Winte rtires
M+S tires....................................... 352
Wiper blades
Cl eani ng....... ..................... ............. 321
Importa ntsafe tynotes .................. 119
Rep lacing (rearwindow) ................ 119
Rep lacing (windshi eld)................... 119
Woo dentrim (clean ing
ins truction s)...................................... 32420
In
dex

R
to cros sing traffic
R in cur ves
As ares ult, BAS PLUScann otinte rvenein
cri tica lsi tua tions. The reisaris ko fan
acc iden t.Always paycareful attent ion tothe
tr aff icsit uatio nand berea dytobra ke.
Fol lowi ng dama getothe front endofthe
veh icle, ha ve the confi guratio na nd opera tion
of the rada rs ensor schec kedataqualified
specialist workshop.This also applies to
collisions atlow speeds wherethereis no
visible damage tothe fron tofthe vehicle.
If BAS PLUS isnot availa bledue toa
malfunction inthe radar sensor system, the
brake system remains availablewith full
brake boosting effectandBAS. ESP
®
(Ele ctronic Stability Program)
Import antsafety notes i
See
the"Important safetynotes" section
(Y page 61).
If ESP ®
detect sthat thevehicle isdeviating
from thedirection desiredbythe driver, one
or more wheels arebraked tostabilize the
vehicle. Ifnecessary, theengine outputisalso
modified tokeep thevehicle onthe desired
course withinphysical limits.ESP®
assists
the driver whenpullingaway onwet or
slippery roads.ESP®
can also stabilize the
vehicle duringbraking.
If ESP ®
interven es,the ÷ ESP®
warning
lamp flashes inthe instrumen tcluster . G
WARN
ING Und
erno circums tances should you
deact ivateES P®
when the÷ ESP®
warnin glamp inthe instrumen tclust er
flashe s.Proc eedasfollows :
R when drivingoff ,apply aslittlethr ottleas
possible .
R while driving,ease upon the accelerat or
pedal.
R adapt yourspeed tosuit theprev ailing road
and weathe rconditions .
Failure toobserve theseguidelines could
cause thevehicle toskid. ESP®
cann ot
prevent accident sresulting fromexcessive
speed.
! Only operate thevehicle foramaximum
of ten seconds onabrake test
dynamometer. Switchoffthe ignition.
Application ofthe brakes byESP ®
may
otherwise destroythebrake system.
! Funct ionorperformanc etest smay only
be performed ona2-axle dynamometer. If
you wish tooperate thevehicle onsuch a
dynamometer, pleaseconsult an
authorized Mercedes-B enzCenter
beforehand. Youcould otherwise damage
the drive trainorthe brake system. i
Only
usewheels withtherecommen ded
tire sizes. OnlythenwillESP ®
funct ion
properly.
4ETS (Electronic Traction System) i
Observe
the"Important safetynotes"
section (Ypage 61).
Traction controlispart ofESP ®
.
Traction controlbrakes thedrive wheels
individuall yif they spin. Thisenables youto
pull away andaccelerate onslippery surfaces,
for example ifthe road surface isslippery on
one side. Inaddition, moredrivetorque is
trans ferred tothe wheel orwheels with
tract ion. Driving
safetysystems
63Safety Z

Tire
s Pro
blem Po
ssible cause s/consequ encesand M So
luti ons h
USA
only:
The yellow tire pressu re
moni torwarnin glamp
(p res sure loss/
ma lfunctio n)islit.
Ca nad aonl y:
The yellow tire pressu re
moni torwarnin glamp
(p res sure loss) islit. G
Ris
kofacciden t The
tirepres sure monitorh as det ectedaloss ofpres sure inat
least oneof thetir es.
X Stop theveh icle without makingany sudde nstee ring orbra king
ma neu vers.Pa yatte ntiontothe traffic conditionsasyou doso.
X Observe theadditional displaymessages inthe multifunct ion
display .
X Check thetire pressure. Ifnecessary, correctthe tire pressure
(Y page 359).
X Ifnecessary, changeawheel (Ypage 374). h
USA
only:
The yellow tirepressure
monit orwarning lamp
(pressure loss/
malfunct ion)flashes for
60 seconds andthen
remains lit. The
tirepressure monitorisfaulty.
X Observe theadditional displaymessages inthe multifunct ion
display .
X Visit aquali fiedspecialist workshop. G
WARNIN
G Each
tire,including thespare (ifprovided), shouldbecheck edatleast every twoweeks when
cold andinflated tothe pressure recommen dedbythe vehicle manufacturer onthe Tire and
Loading Information placard onthe driver's doorB-pillar or,ifavailab le,the tire pressure label
on the inside ofthe fuel filler flap.Ifyour vehicle hastires ofad iffer entsize than thesize indic ated
on the Tire andLoadin gInf ormat ionplacard orthe tirepress urelabel, youshould determin ethe
proper tirepress ureforthosetires.
As anadded safetyfeat ure, your vehic lehas been equipped withatir epress uremon itoring
syst em(TPMS )that illuminat esalow tirepress uretelltalewhen oneormore ofyour tires are
sign ifican tlyunder inflated. Accor dingly, whenthelow tirepress uretellt aleilluminat es,you should
sto pand chec kyour tires assoon aspossible, andinflate themtothe proper pressure. Driving
on asignificant lyunderinflated tirecauses thetire tooverheat andcanlead totire failure.
Underinf lationalsoreduces fuelefficienc yand tiretread life,and may affect thevehicle's handling
and stopping ability.PleasenotethattheTPMS isnot asubstitute forproper tiremainten ance,
and itis the driver's responsibility tomaintain correcttire press ure,even ifunder inflation has
not reach edthe level totrigger illuminat ionofthe TPMS lowtirepress uretelltale.
USA only:
Your vehic lehas also been equipped withaTPMS malfun ction indic atortoindic atewhen the
syst emisnot operat ingproper ly.The TPMS malfun ction indic atoriscom bined withthelow tire
press uretellt ale. When thesyst emdete ctsa malfun ction, thetellt alewill flash forapprox imately
1m inuteand thenremain continuously illuminated. Thissequence willberepeated everytime 280
War
ning andindicator lampsin theinstr ument clusterOn-board computer and displays

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

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

Useful
information
i This
Operat or'sManual describesall
models andallstan dard andoption al
equipment ofyour vehicle available atthe
time ofpublication ofthe Operat or's
Manual. Country-specificdiffer encesare
possible. Pleasenotethat your vehicle may
not beequipped withallfeature s
descr ibed. Thisalso applies tosafet y-
related systemsand func tions. i
Please
readtheinfor mation onqualified
specialist workshops(Ypage 25). Impor
tant safet ynotes Consult
anauthoriz edMerc edes-B enzCent er
if you require information onapproved and
recom mende dtires andwheels forsummer
and winteroperation .Advice onpurchasin g
and carin gfor tires isalso available there. G
WARN
ING Replace
rimsortires withthesame
designat ion,manufac turerandtype asshown
on the original part.Forfurther infor mation
con tact anauthoriz edMerced es-BenzCente r.
If inco rrectlysized rimsandtires are
mount ed,the wheel brakes orsuspension
compon entscan bedamaged. Also,the
operatin gclearanc eof the wheels andthe
tires maynolonger becorr ect. G
WARN
ING Worn
,old tires cancause acciden ts.Ifthe tire
tread isworn tominimum treaddepth, orif
the tires have sustaine ddamage, replace
them .
When replacin grims, onlyusegenuine
Mercede s-Benz wheel boltsspecified forthe
partic ularrimtype. Failure todo socan result
in the bolts loosenin gand possibly an
acciden t.
Retreaded tiresarenot testedor
recom mended byMercede s-Benz ,sinc e
previous damagecannotalways be recog
nized on retr eads. Theoperatin gsafety
of the vehicle cannotbe assured whensuch
tires areused. G
WARN
ING If
you feel asudden significantvibration or
ride disturban ce,oryou suspect thatpossible
damage toyour vehicle hasoccurred, you
should turnonthe hazard warning flashers,
carefully slowdown, anddrive withcaution to
an area which isasafe distan cefrom theroad.
Inspe ctthe tires andthevehicle underbody
for possible damage. Ifthe vehicle appears
unsafe, havethevehicle towedtothe nearest
authoriz edMercede s-Benz Cente ror tire
dealer forrepairs. G
WARN
ING Do
not drive withaflat tire. Aflat tire affect s
the ability tosteer orbrake thevehicle. You
might losecontrolof the vehicle. Continued
drivin gwith aflat tire ordrivin gat high speed
with aflat tire willcause excessive heatbuild-
up and possibly afire. i
Furt
herinfor mation aboutTiresand
wheels canbeobtained fromany
authoriz edMercede s-Benz Cente r. Oper
ation Not
eson driving
R Ifthe vehicle isheavily laden,checkthe tire
pressures andcorrect themifnecessary.
R When parking yourvehicle, makesurethat
the tires donot getdeformed bythe curb
or other obstacles. Ifit is necessary todrive
over curbs, speedhumps orsimilar
elevations, trytodo soslowly andatan
obtuse angle.Otherwise, thetires,
particularly thesidewa lls,can get
damaged. 350
Operat
ionWheels and tires